WO2009031248A1 - Composition containing amino compound and silica gel, and tobacco filter - Google Patents

Abstract

A tobacco filter that is useful for selective efficient removal of formaldehyde while retaining smoking taste components, such as nicotine and tar. The tobacco filter is fabricated using a composition composed of at least one amino compound selected from among amino acids and aminosulfonic acids and silica gel (especially, silica gel of 20 nm or greater average pore diameter). This composition may further contain a moisturizing agent, such as any of polyols. This tobacco filter is capable of efficient selective removal of formaldehyde, for example, capable of attaining a formaldehyde retention ratio of 50% or below while retaining each of nicotine and tar at a ratio of 75% or higher.

Description

 TECHNICAL FIELD The present invention relates to a composition containing an amino compound and silica gel.

 [0001]

 The present invention relates to a composition useful for selectively and efficiently removing aldehydes (particularly formaldehyde) while retaining taste components such as nicotine and tar, and a tobacco filter comprising the composition and And a cigarette provided with the cigarette filter. Background art

 [0002]

 Various components have been proposed as adsorbents for filtering components in tobacco smoke. As such components, many have been reported in which basic components such as amine components are added for the purpose of adsorbing acidic components and adsorbing formaldehyde. For example, JP-A-59-88078 (Patent Document 1), JP-A-59-1519882 (Patent Document 2), and JP-A-60-54669 (Patent Document 3) disclose activated carbon. Polyethyleneimine has a low vapor pressure and an adsorbent for cigarette smoke filters impregnated with an aliphatic amine. Special Table 2002-528105 (Patent Document 4) and Special Table 2002-528106 (Patent Document 5) Discloses a cigarette filter in which 3-aminoprovirsilyl and a related atomic group are covalently bonded, and JP 2003-505618 A (Patent Document 6) discloses a filler containing an ammoyu salt.

 [0003]

Traditionally, nicotine and tar are considered to be the main harmful ingredients in tobacco smoke, and interest in nicotine and tar delivery has been imposed, and many countries impose nicotine and tar labeling obligations. However, nicotine itself is a favorite component of tobacco and is considered to be directly involved in smoking satisfaction. Also, with regard to tar, it is preferable to remove the tar component in the tobacco smoke component at a relatively high level in order to damage the flavor. In other words, if the smoke components with low volatility including tar and nicotine are removed indiscriminately, the taste becomes light and satisfaction cannot be obtained. On the other hand, aldehydes, especially formal W

Dehydr not only has an irritating odor but also has recently been attracting attention as one of the causative agents of allergies, so it is an unfavorable health ingredient and should be removed as much as possible. Therefore, it is required to selectively remove aldehyde components (especially formaldehyde) in the smoke component while keeping the amount of tar and nicotine in the tobacco smoke component at a relatively high level.

 [0004]

 However, the basic components as described above remove not only aldehydes such as formaldehyde but also components such as tar and nicotine, which impairs the taste of tobacco. In addition, many of the basic components as described above, especially synthetic polymer amines, often exhibit a characteristic amine odor due to decomposition and the remaining low molecular weight components. In addition, the basic component itself or a volatile substance contained therein often volatilizes and is toxic to the human body.

 [0005]

 It has also been proposed to use (poly) amino acids as basic components. For example, Japanese Patent Application Laid-Open No. 48-61695 (Patent Document 7) describes the production of tobacco, raw leaf tobacco and tobacco products in the tobacco production process, or the production of tobacco products with acidic amino acid residues in the molecular chain. A method for improving the quality of cigarettes with the added polyamino acids is disclosed. In addition, US Pat. No. 2,968,306 (Patent Document 8) discloses a cigarette smoke filter containing an amino acid such as glycine in order to remove aldehyde in tobacco smoke. Further, Japanese Patent Publication No. 11-500926 (Patent Document 9) discloses a tapaco smoke filter including a porous tomb material having microcapsules dispersed therein, wherein the microcapsule is a core and a microcapsule. A tobacco smoke filter is disclosed that includes a shell and the shell includes a wetting agent such as sodium pyroglutamate. This document states that sodium pyroglutamate is effective in removing charged particles from tobacco smoke and functions as a wetting agent in the temperature range of tobacco smoke.

 [0006]

A method of applying such (poly) amino acids and activated carbon to a tobacco filter in combination is also known. For example, Japanese Patent Application Laid-Open No. 62-232371 (Patent Document 10) discloses a filter for cigarette combustion gas containing a radical scavenger. This document describes that, as the radical scavenger, amino acids such as tributophan, glutathione, L-cysteine, N-acetyl cysteine, tyrosine, arginine, and oxyglutamic acid can be used in addition to vitamins and sugars. Is W 200

ing. In addition, this document also states that when it is a solid such as vitamin C, it is known as a filter packing, and the active carbon is loaded with a radical scavenger. It has been done.

 [0007]

 WO2004Z026053 (Patent Document 11) discloses basic amino acids or basic amino acid salts such as arginine, lysine, histidine, ornithine, citrulline and hydroxyzine, and moisturizing agents such as glycerin, sodium propionate and glycerin. Tobacco filters containing an agent are disclosed. This document also describes that the filter material may contain a combination of activated charcoal in addition to a basic amino acid or basic amino acid salt and a humectant.

 [0008]

 Furthermore, JP 2006-34127 A (Patent Document 12) discloses a tobacco smoke filter containing a basic polypeptide such as polylysine or a polyamino acid. This document describes that a basic polypeptide may be supported on granular materials such as activated carbon, diatomaceous earth, silica gel, alumina, titanium oxide, zircoure, and zeolite for inclusion in a tapaco smoke filter. ing. This document describes that by using a basic polypeptide, only aldehydes can be selectively removed with a relatively low removal rate of tar and nicotine. In the Examples, it is described that a filter having a nicotine removal rate of 2%, a tar removal rate of 0%, and a formaldehyde removal rate of 15% was obtained.

 [0009]

 However, in the methods described in these documents, although the safety to the human body is improved by using (poly) amino acids, aldehydes such as formaldehyde are still sufficiently removed for selection. Have difficulty.

 [Patent Document 1] JP 59-88078 (Claims)

 [Patent Document 2] Japanese Patent Laid-Open No. 59-1519882 (Claims)

 [Patent Document 3] JP-A-60-54669 (Claims)

 [Patent Document 4] Special Table 2002-528105 Publication (Claims)

 [Patent Document 5] Special Table 2002-528106 Publication (Claims)

 [Patent Document 6] Special Table 2003-505618 (Claims)

[Patent Document 7] Japanese Patent Laid-Open No. 48-61695 (Claims) W

[Patent Document 8] US Pat. No. 2,968,306 (Claims)

 [Patent Document 9] Japanese Patent Publication No. 11-11500926 (Claims, Page 6, No .;! -3 lines)

 [Patent Document 10] JP-A-62-232371 (claims, page 2, upper right column, line 15 to lower left column, line 7; page 2 lower right column, line 18 to page 3, upper left column, page 3) 2 lines)

 [Patent Document ll] WO2004Z026053 (Claims, page 3, lines 40-41)

 [Patent Document 12] Japanese Patent Laid-Open No. 2006-34127 (Claims, paragraph numbers [0010] [0022]) Disclosure of the Invention

 [0010]

 Accordingly, an object of the present invention is to provide a composition useful for selectively removing aldehydes (particularly formaldehyde).

 [0011]

 Another object of the present invention can be suitably used as a component of a tobacco filter, and efficiently removes aldehydes (particularly formaldehyde) while maintaining a high concentration of taste (or flavor) components such as tar and nicotine. It is to provide a composition that can.

 [0012]

 Still another object of the present invention is to provide a cigarette filter that is safe for the human body and can selectively remove aldehydes (particularly formaldehyde) without impairing the taste, and a cigarette equipped with the cigarette filter. There is.

 [0013]

 As a result of intensive studies to achieve the above-mentioned problems, the present inventors have found that the amino acid can be obtained by composing a cigarette filter or the like with a composition in which a specific amino compound and silica gel (in particular, silica gel having an average pore diameter of about 20 nm or more) are combined. Because chemical adsorption performance that seems to be caused by the amino group of the compound is exerted, it has been found that aldehydes (especially formaldehyde) can be selectively adsorbed while holding tar and nicotine at a high concentration, The present invention has been completed.

[0014] That is, the composition of the present invention is composed of at least one amino compound, which is selected for amino acids and aminosulfonic acids, and silica gel. In particular, the composition may be a composite in which an amino compound is supported on silica gel.

 [0015]

 The silica gel preferably has an average pore diameter of 20 nm or more. Such a silica gel having a large average pore diameter can further improve the selective removal of aldehydes by combination with an amino compound. Also, at a temperature of 23 ° C and 60% RH, the equilibrium moisture content of the silica gel may be about 0.01 to 5%. In the composition, the ratio of the amino compound may be, for example, about 0.03 to 15 parts by weight with respect to 100 parts by weight of silica gel.

 [0016]

In a typical composition of the present invention, (i) the amino compound is composed of an α-amino acid or a salt thereof, and (ii) the silica gel has an average pore diameter of 25 nm or more, a specific surface area of 5 to 15 (^ 12 _nos. Silica gel having an equilibrium moisture content of 0.1 to 3% at a temperature of 23 ° C and 60% RH, (iii) 0.05 to 10 parts by weight of 100 parts by weight of the amino compound It may be.

 [0017]

 The composition of the present invention may further contain a humectant. Such a humectant may be composed of polyols (for example, glycerin and the like). Such a humectant is useful for efficiently improving the selective adsorption of aldehydes by the composition. Such an effect of improving selective adsorption seems to work particularly effectively with silica gel having a relatively large average pore diameter. Therefore, the humectant can be suitably combined with silica gel having a large pore diameter. In a typical composition containing the humectant, silica gel is silica gel having an average pore size of 25 nm or more, the humectant is polyols, and the ratio of the humectant is 0. 1 to: Contains about 10 parts by weight of a composition.

 [0018]

 The composition of the present invention is excellent in selective removal of aldehydes, and may be a composition for use particularly in tobacco filter applications.

 [0019]

The present invention also includes a cigarette filter composed of the composition. Such a cigarette filter can efficiently remove aldehydes (especially formaldehyde), and the present invention further includes the above-described composition. W

Also included is a method of reducing aldehydes (especially formaldehyde) in tobacco smoke [specifically, aldehydes in tobacco smoke passing (or circulating) through the tobacco filter] by constructing the tobacco filter with a product. It is. In such a method, taste components such as nicotine and tar can be maintained at a high level, for example, while maintaining nicotine and tar at a retention rate of 75% or more, the formaldehyde retention rate can be reduced to 50% or less. it can.

 [0020]

 'The present invention also includes a cigarette provided with the cigarette filter.

 [0021]

 The composition of the present invention is useful for selectively removing aldehydes (particularly formaldehyde) because it combines a specific amino compound with silica gel (particularly silica gel having an average pore size of 30 nm or more). In particular, the composition of the present invention can efficiently remove aldehydes (particularly formaldehyde) while maintaining a high concentration of taste (or flavor) components such as tar and nicotine. Therefore, the cigarette filter of the present invention can selectively remove aldehydes (particularly formaldehyde) that are safe for the human body and do not impair the taste. BEST MODE FOR CARRYING OUT THE INVENTION

 [0022]

 [Composition]

 The composition of the present invention (sometimes referred to as a composite composition or a composite) is composed of an amino compound and silica gel.

 [0023]

 (Amino compounds)

 The amino compound can usually be composed of at least one selected from amino acids and aminosulfonic acids. '

 [0024]

Examples of amino acids include amino acids and salts thereof (amino acid salts). Amino acids are sulfur-containing amino acids that may be neutral amino acids (such as monoaminomonocarboxylic acids), acidic amino acids (such as monoaminodicarboxylic acids), or basic amino acids (such as diaminomonocarboxylic acids). There may be. Amino W

The acid is α-amino acid,] 3-amino acid, γ-amino acid, etc., and may be α-amino acid. The amino acid may be either an optically active form (D form, L form, etc.) or a racemic form. The amino acids also include polyamino acids having a low degree of polymerization (for example, a degree of polymerization of 2 to 9, preferably a degree of polymerization of 2 to 5, more preferably a degree of polymerization of about 2 to 3). The amino acid may have a substituent and may be an amino acid derivative obtained by at least partially derivatizing a carboxyl group or an amino group. For example, in an amino acid, at least a part of the carboxyl group is a derivatized carboxyl group (for example, an amide group) and may be τ¾. '

 [0025]

 Typical amino acids include aliphatic amino acids [for example, aliphatic monoamino acids such as glycine, alanine, isoleucine, leucine, norin, trenin, serine, asparagine, aminosuccinic acid, cystine, methionine, guzoretamine, glutamic acid, etc. Carboxylic acids (amino C2-20 alkanecarboxylic acids, preferably amino C2-12 alkanecarboxylic acids, more preferably amino C2-8 alkanecarboxylic acids), aliphatic polyaminocarboxylic acids such as lysine, hydroxylysine, arginine, cystine ( Polyamino C2-20 alkane carboxylic acid, preferably polyamino C2-12 alkane carboxylic acid)], aromatic amino acids (eg phenylalanine, tyrosine, etc. C2-20 alkane carboxylic acid, preferably C6-10 allyl C 2 — 12 Alkanka Boronic acid), heterocyclic amino acids (for example, tryptophan, histidine, proline, 4-hydroxyproline, etc.), polypeptides in which these amino acids are polymerized at a low polymerization degree (for example, a polymerization degree of 9 or less) (for example, Glycylglycine, glutamylglycine, glycylglycylglycine, glycylproline, etc.). Examples of amino acid salts include metal salts [for example, alkali metal salts (for example, sodium salts such as sodium glutamate)], hydrochlorides (for example, arginine hydrochloride, etc.), and salts between amino acids (lysine and And a salt with glutamic acid).

 [0026]

 These amino acids may be used alone or in combination of two or more.

 [0027]

Examples of aminosulfonic acids include aminosulfonic acid (sulfonic acid having an amino group), aminosulfonic acid salts (the salts exemplified above, such as metal salts and hydrochlorides), and the like. As in the case of the amino acid, the aminosulfonic acid may be any of aliphatic aminosulfonic acid, aromatic aminosulfonic acid and the like, and may be either an optically active substance or a racemic body. Typically, aminosulfonic acid includes, for example, aliphatic Examples thereof include aminosulfonic acid (for example, amino C2-12 alkanesulfonic acid such as taurine, preferably amino C2-8 alkanesulfonic acid, and more preferably amino C2-6 alkanesulfonic acid).

 [0028]

 (Silica genore)

 In the present invention, the selective absorption of aldehydes is improved by combining the amino compound and silica gel. That is, although the amino compound has an amino group that is greatly involved in the removal of aldehydes (particularly formaldehyde), the amino group forms a hydrogen bond or the like, so that the cigarette filter is used as it is. Even when applied to aldehydes, the adsorption performance of aldehydes (especially formaldehyde) cannot be fully demonstrated. Therefore, in the present invention, it is possible to activate the amino group of the amino compound by some action by combining the specific amino compound and the porous carrier, particularly silica gel, or the aldehydes of the amino compound. Improve removal performance (selective removal). In addition, high molecular weight amino group-containing compounds such as polypeptides tend to close the pores of silica gel, so that silica gel and amino compounds can act synergistically to effectively remove aldehydes.

 [0029]

The average particle size of silica gel can be appropriately selected depending on the application, for _example, 50~2500 μ ιη, preferably 100 to 2,000, more preferably 200: 1800 (e.g., 300 to 1,500 m) may be about Usually, it may be about 250 to 1400 μπι. If it is in the above range, it can be applied to a cigarette filter without impairing an appropriate ventilation resistance.

 [0030]

The average pore diameter (average pore diameter) of the silica gel is, for example, 0.5 to 1000 nm, preferably:! To 800 nm, and more preferably about 3 to 600 nm. In particular, in the present invention, a relatively large average pore diameter, for example, an average pore diameter of 20 nm or more (for example, about 20 to 900 nm), preferably 25 nm or more (for example, about 25 to 7 OOnm), more preferably 30 nm or more ( For example, it may be about 35 to 650 nm), particularly 40 nm or more (for example, about 45 to 600 nm), and usually about 20 to 500 nm (for example, 25 to willow nm, preferably about 30 to 350 nm). Usually, silica gel having a relatively small pore diameter is often used for adsorption of gas or the like. On the other hand, in the present invention, by selectively using silica gel having a large pore diameter, the selective removal of aldehydes can be further enhanced in combination with the amino compound. [0031]

l〜1200m²/g 程度）、好ましくは 1. 5m²/g以上 (例えば、 2〜： !OOOm ^程度)、さらに好ましくは 5m²/g以上 (例えば、 6〜800m²/g程度)であってもよぐ通常 3〜300m²/g (例えば、 4〜200m²/g、好ま しく

さらに好ましくは 6〜； 100m²/g、特に 7~80m²Zg程度）であってもよい。 The specific surface area (average specific surface area) of silica gel is, for example, 0.

l~1200m about ² / g), preferably 1. 5m ² / g or more (for example, 2~:! OOOm ^ degree), and more preferably 5m ² / g or more (for example, 6~800m about ² / g) even Yogu usually 3~300m ² / g (e.g., 4~200m ² / g, lay preferred

More preferably, it may be 6 to 100 m ² / g, particularly about 7 to 80 m ² Zg.

 [0032]

 The average pore volume of silica gel may be, for example, about 0.1 to 2 mL / g, preferably about 3 to 1.8 mL / g, and more preferably about 0.5 to 1.5 mL / g. [0033] Further, the equilibrium moisture content of silica gel at a temperature of 23 ° C and 60% RH (or the equilibrium water absorption rate, that is, the water content in an equilibrium state under the conditions of a temperature of 23 ° C and 60% RH) is, for example, 0.01 to 50%, preferably about 0.1 to 30%. In particular, in the present invention, the equilibrium moisture content power at a temperature of 23 ° C. and 60% RH, for example, 0.01 to 10% (for example, 0.03 to 8%), preferably 0.05 to 7% (for example, 0 108 to 5%), more preferably 0.1 to 3% (for example, 0.15 to 2.5%), particularly 0.5 to 2%, usually about 0.01 to 5% silicagenole is suitable. May be used.

 [0034]

 Since aldehydes such as form 77 aldehyde are often soluble in water, from the viewpoint of removing formaldehyde, the tobacco filter and the like preferably contain a lot of water. However, a large amount of moisture may adversely affect the tobacco filter (eg, decrease in taste). Since silicagenole is used in the present invention, it is not necessary to include moisture in the cigarette filter itself. In particular, the use of silica gel having a relatively small moisture absorption capacity as described above has an adverse effect on the cigarette filter. It is possible to efficiently remove formaldehyde by adding appropriate moisture to the cigarette filter.

 [0035]

 Silica gel may be surface-treated. In addition, the shape of silica gel is usually particulate (or granular), and the shape (surface shape) of such granular silica genore may be a smooth shape (spherical or the like), or uneven (for example, “Ob good.” [0036]

The proportion of the amino compound is, for example, 0.01 to 30 parts by weight, preferably 0.02 to 20 parts by weight, more preferably 0.03 to 15 parts by weight, particularly 0.05 to : L0 parts by weight Yes. In the composition of the present invention, a very small amount, for example, 7 parts by weight or less (for example, about 0.01 to 6 parts by weight) with respect to 100 parts by weight of silica gel, depending on the type of amino compound or silicagenole, Preferably, aldehydes are selectively used even in the case of an amino compound of 5 parts by weight or less (for example, about 0.02 to 5 parts by weight), more preferably 4 parts by weight or less (for example, about 0.05 to 3 parts by weight). Can be removed.

 [0037]

 As long as the composition contains an amino compound and silica gel, the form of these components in the composition is not particularly limited. However, it is preferable that at least the amino compound and the silica gel are in contact with each other. That is, the composition may be a composite (or composite) of an amino compound and silica gel. In a preferred form, in the composition, the amino compound is supported on silica gel [or the amino compound adheres to the silica gel (silica gel surface)].

 [0038] '

(Humectant)

 The composition (or tobacco filter) may further contain a moisturizing agent (moisturizing component). The selective removal of aldehydes can be further improved by using a combination of an amino compound or silica gel and a humectant. The effect of improving the selective removal of aldehyde by such a moisturizing agent seems to be particularly large when combined with a silica gel having a relatively large pore diameter.

 [0039]

Moisturizers include polyols {diols [eg, alkanediols (ethylene glycol, propylene glycol, trimethylene glycol, 1,3-butanediol, 1,4 monobutanediol, 1,5-pentanediol, C2-10 alkanediol such as xylene glycol, preferably C2-8 alkanediol, more preferably C2-6 alkanediol, especially C2-4 alkanediol, polyalkylene glycol (diethylene glycol, dipropylene glycol, triethylene) Glycol, tri-propylene glycol and other di- to tetra-C2-4 alkylene glycols, etc.], triols [alkanetriols (glycerin, 1,2,6-hexanetriol, etc., C3-10 alkanetriols, preferably Is C3-6 Alcantoli Polyol, more preferably C3-4 alkanetriol, etc.], tetrafunctional or higher polyols [multifunctional polymers of trifunctional or higher functional polyols (such as the aforementioned alkanetriols) (eg diglycerin, triglycerin, etc.) Polyglycerin) etc.], derivatives of these polyols [for example, dialkylene glycol monoanolalkyl ethers (methyl carbitol, ethyl carbitol, etc.), ₂

Re) alkylene glycol monoacylate (ethylene glycol monoacetate etc.) etc.

It is.

 [0040]

 Further, the humectant includes a solid component at room temperature (for example, about 15 to 25 ° C.). Such a solid

Synthetic polymers having hydroxyl groups or ether bonds (ether groups) [polyvinyl

Nyl alcohol, polyalkylene glycol (polyethylene oxide, polypropylene oxide, polyethylene

Natural polymer (gelatin, dextrin, starch, etc.)

Etc.), cellulose derivatives (hydroxyethylcellulose, hydroxypropylcellulose, etc.)

Alkyl-hydroxynolequinoles such as xyalkylcellulose and ethylhydroxyethylcellulose

Power of cellulose derivatives having hydroxyl groups such as cellulose, carboxymethyl cellulose, etc.

Cellulose agents such as azorequinolesenorerose such as noreboxynorezorecenorelose, ethi / resenorelose

Ters), carbohydrates (or sugars) [eg monosaccharides (eg xylose, glucose etc.), disaccharides

(Cellobiose, trueno, loin, etc.), sugar alcohols (eg, inositol, bornesitol, etc.)

Inositols, xylitol, etc.)] and the like. These moisturizers can be used alone or in combination of two or more.

You may combine above.

 [0041]

 Preferred humectants include polyols (especially trifunctional or higher functional polyols such as glycerin).

The

 [0042]

 The boiling point of a humectant that is liquid at room temperature (for example, polyols) is, for example, 150 ° C or higher (for example,

180 to 500 ° C), preferably 200 ° C or higher (for example, about 210 to 400 ° C), more preferably 220 ° C

Above (for example, 230 to 350 ° C), in particular 250 ° C or more (for example, about 260 to 320 ° C), it is good.

 [0043]

 It should be noted that the humectant is in contact with silica gel (and the amino compound) that constitutes at least the composition.

You may touch it. In a preferred embodiment, the silica gel carries (or adheres) a moisturizing agent.

 [0044]

 The ratio of the humectant is, for example, 0.05 to 15 parts by weight, preferably 0.1 to 100 parts by weight of silica gel.

To 10 parts by weight, more preferably 0.3 to 7 parts by weight, especially 0.5 to 5 parts by weight, usually about 0.8 to 3 parts by weight. Good T¾. The ratio of the humectant may be 5 to: L000 parts by weight, preferably 10 to 500 parts by weight, and more preferably about 30 to 300 parts by weight with respect to 100 parts by weight of the amino compound.

 [0045]

 The composition (or cigarette filter) is composed of other components such as inorganic fine powder (kaolin, tar, diatomaceous earth, quartz, calcium carbonate, barium sulfate, titanium oxide, alumina, etc.), heat stabilizer. (Such as salts of alkali or alkaline earth metals), colorants, whiteness improvers, oils, yield improvers, size agents, biodegradation or photodegradation accelerators (such as anatase-type titanium oxide), natural polymers or their Derivatives (such as cellulose powder) may be included. Other components can be used alone or in combination of two or more.

 [0046]

 The composition of the present invention can be prepared according to the content of each component, for example, by contacting (or mixing) an amino compound and silica gel (and other components such as a humectant, if necessary). it can.

 [0047]

 In particular, a silica gel containing a complex of an amino compound and silica gel (and optionally other components such as a moisturizer) [or a silica compound containing an amino compound (and a moisturizer), in particular an amino compound (and a moisturizer) is supported on the silica gel. Composites] include, for example, a method of adding a solution or dispersion containing an amino compound (and other components such as a humectant) to silica gel (addition method), an amino compound (and other components such as a humectant) For example, by immersing silica gel in a solution or dispersion containing The addition method is not particularly limited, and the solution or dispersion liquid may be added by a method such as spraying or spraying the silica gel on the silica gel.

 [0048]

The solvent used for the preparation of the solution or dispersion is not particularly limited, and examples thereof include water, alcohols (eg, alcohols such as methanol, ethanol, isopropanol, methyl caffeosolve; ethyl cellosolve, ptucylcaffeosolve, Propylene glycol monomethyl ether, carbitols, etc.), ketones (acetone, methyl ethyl ketone, cyclohexanone, etc.), ethers (tetrahydrofuran, etc.), esters (ethyl acetate, butyl acetate, ethylene glycol monomethyl ether acetate, etc.) ), Hydrocarbons (aliphatic or alicyclic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, etc.). When using liquid humectants (polyols), use humectants as solvents. You can also. These solvents may be used alone or in combination of two or more T%. Usually, the solvent is composed of polar solvents such as water and alkanols.

 [0049]

 In the solution or dispersion, the ratio of the solid content [amino compound (and other components such as a humectant)] is, for example, 0.05 to 50% by weight, preferably 0.1 to 30% by weight. May be about 0.5 to 20% by weight. The silica gel after the adhesion treatment or the support treatment may be subjected to a drying treatment in order to remove the solvent. As the drying process, vacuum drying, hot air drying, or the like can be used.

 [0050] '

 Since the aldehydes can be selectively removed, the composition of the present invention is useful as a deodorizing composition (particularly, a deformaldehyde composition). For this reason, the composition of this invention can be applied suitably for a filter use, especially a tobacco filter, for example. Hereinafter, the tobacco filter application will be described in detail.

 [0051]

 [Taha * Koino Letter]

 As described above, the composition of the present invention can constitute a tobacco filter. That is, the cigarette filter of the present invention can usually be composed of a material constituting the cigarette filter (cigarette filter material) and the composition. Such a tobacco filter can be produced by incorporating the composition into a tobacco filter material (or a tobacco filter, sometimes simply referred to as a filter material or material).

 [0052]

 The method of containing the composition may be a method of individually containing the constituents of the composition (other components such as amino compounds, silica gel, moisturizer, etc.) in the tobacco filter material, A method of containing (or adding) a composite prepared in advance as described above may be used. In the present invention, usually, the composite prepared in advance is often contained in a tobacco filter.

 [0053]

 As a typical cigarette filter, for example, a (0 cigarette filter material (or cigarette filter) and a cigarette filter composed of the composition (particularly a composite) filled in the cigarette filter material, (ii) ) A cigarette filter in which the composition (especially a composite) is dispersed in a cigarette filter material (or cigarette filter), etc. Preferred forms include the filled cigarette filter (i).

[0054] In the case of the filled tobacco filter (i), for example, at least one divided portion of the material for the tobacco filter having a structure divided into a plurality of [two divided (dual, triple), etc. (triple, etc.) ( For example, one part of the filter material divided into two parts, the central part of the filter material divided into three parts, etc.) are composed (or replaced or replaced) with the composition (or the filter material filled with the composition). The composition may be filled into a tobacco filter material (or tobacco filter) by filling.

 [0055]

 The tobacco filter material includes, for example, natural or synthetic fibers (for example, cellulose ester fibers (such as cellulose acetate fibers)), cellulose fibers (such as wood fibers (such as wood pulp fibers such as conifers and hardwoods), seed hair fibers (for example, Cotton, linter, etc.), gin leather fiber, leaf fiber (eg, Manila hemp, Nieuland land hemp), etc.], regenerated cellulose fiber (viscose rayon, copper ammonia rayon, nitrate silk, etc.), polyester fiber, polyurethane Fiber, polyamide fiber, polyolefin fiber (polyethylene fiber, polypropylene fiber, etc.), etc. (or fibrous material), powdered material (e.g. activated charcoal, diatomaceous earth, alumina, titanium oxide, zirconium oxide, zeolite) Inorganic particles, wood chips, particles composed of other natural or synthetic polymers) Quality (gelatin, casein, etc.) can be configured in such. These constituents of the tobacco filter material may be used alone or in combination of two or more. In general, the material for tobacco filters may consist of at least fibers.

 [0056]

 In addition, the shape (or structure) of the tobacco filter material can be appropriately selected according to its constituent components (fibers, etc.). Shape, non-woven fabric, tow structure (or tow shape, for example, a tow structure of crimped fiber), paper shape (or paper shape or paper structure), sheet shape, granulated material, etc. . The tow structure is in the form of a fiber bundle formed by bundling (bundling) single fibers (filaments) of fibers (particularly cellulose ester fiber). In such a tow structure filter material, The number of filaments constituting the (fiber bundle) may be, for example, about 3000 to 10 00000 (for example, 300 to 100,000), and preferably <500 to 100,000

 [0057]

In the cigarette filter, the proportion of silica gel may be, for example, about 0.1 to 90% by weight, preferably about 0.5 to 70% by weight, and more preferably about 1 to 50% by weight with respect to the entire tobacco filter. . Also In the tobacco filter, the ratio of the amino compound is, for example, about 0.001 to 10% by weight, preferably about 0.005 to 5% by weight, and more preferably about 0.01 to 5% by weight with respect to the entire tobacco filter. τ¾ is good.

 [0058]

 Further, in the tobacco filter, the ratio of the total amount of silica gel and amino compound is, for example, 0.2 to 95% by weight, preferably 1 to 80% by weight, more preferably 2 to 60% by weight, based on the whole tobacco filter. It may be a degree.

 [0059]

 When a humectant is used, the ratio of the humectant is, for example, 0.001 to 10% by weight, preferably 0.005 to 5% by weight, and more preferably 0.01 to 10% by weight with respect to the entire tobacco filter. It may be about 1% by weight.

 [0060]

 The tobacco filter (cigarette filter material) may contain water. Such moisture may be contained in the silica gel material itself or may be contained in silica gel. The ratio of water to the total tobacco filter is, for example, 0.01 to 10% by weight, preferably 0.05 to 8% by weight, more preferably 0.:! To 7% by weight (for example, 0.3 to 5% by weight). %) Degree.

 [0061]

 The tobacco filter can be formed by a conventional method according to the material for the tobacco filter or the structure of the tobacco filter. For example, the filled cigarette filter may be manufactured by a method of filling the filter material into a space of a filter plug that has been previously formed by the tobacco filter material.

 [0062]

 Since the cigarette filter of the present invention is composed of the above composition, it can efficiently remove aldehydes such as formaldehyde while maintaining a high level of taste components such as nicotine and tar. Therefore, in the present invention, a smoking filter (or cigarette) passing through the cigarette filter (or cigarette) is reduced by constituting a cigarette filter (or cigarette) with the composition. This includes a method [more specifically, a method of reducing aldehydes (particularly formaldehyde) while retaining nicotine and tar in the cigarette smoke passing through the cigarette filter].

[0063] For example, the formaldehyde retention rate (weight conversion) of the cigarette filter can be selected within a range of 70% or less (for example, 0-6 to 5%), for example, 60% or less (for example, about:! To 55%), preferably Is 50% or less (for example, about 3 to 45%), more preferably 40% or less (for example, 5 to 35%), and formaldehyde can be removed at a high level.

 [0064]

 Further, the nicotine retention rate (weight conversion) and tar retention rate (weight conversion) of the cigarette filter can be selected from a range force of 50% or more (for example, 55 to 100%), for example, 60% Or more (e.g. 65-100%), preferably 70% or more (e.g. 75-99%), more preferably 75% or more (e.g. 80-98%), in particular 80% or more (e.g. 85-97%) ) Degree.

 [0065]

 In particular, the nicotine retention rate (weight conversion) of the cigarette filter can be selected from a range force of 60% or more (for example, 65 to 100%), for example, 70% or more (for example, 75 to 99%), preferably 80% Or more (for example, 82 to 98%), more preferably about 85% or more (for example, 88 to 97%). Further, the tar retention (weight conversion) of the cigarette filter can be selected from a range force of 50% or more (for example, 55 to 100%), for example, 55% or more (for example, 60 to 100%), preferably Is 65% or more (for example, 70 to 99.9%), more preferably 70% or more (for example, 75 to 99.5%), particularly 75% or more (for example, 80 to 99%).

 [0066]

 The retention rate (formaldehyde retention rate, nicotine retention rate, tar retention rate) can be measured based on the amount of formaldehyde (or nicotine amount or tar amount) in the tobacco smoke passing through the tobacco filter. That is, the “retention ratio” is the amount of formaldehyde in cigarette smoke passing under a predetermined condition (flow rate, time, number of times, etc.) through a cigarette filter made of a raw cigarette filter material containing the composition. (Or nicotine amount or tar amount) is X, and under the same conditions (flow rate, time, number of times, etc.), the amount of formaldehyde (or nicotine amount or nicotine amount) passing through the tobacco filter composed of the above composition When the tar amount is Y, it is represented by the following formula.

 [0067]

 Retention (%) = (γ / χ) X 100.

[0068] ,

 κυι / ϋρ ^ υθ7 / 067692

In the present invention, the composition can be incorporated into the tobacco filter without increasing the ventilation resistance of the tobacco filter. Therefore, the cigarette filter of the present invention has air permeability suitable for cigarette smoke.

The cigarette filter has a ventilation resistance of 120mm in length and 24.5 ± 0.2mm in circumference when measured with the pressure loss when air is passed at a flow rate of 17.5ml / sec. 150 to 600 mm WG (water gauge), for example, 160 to 500 mm WG, preferably 170 to 400 mm WG, more preferably about 180 to 350 mni WG.

 [0069]

 The cigarette of the present invention includes the cigarette filter (or cigarette filter material). The location of the cigarette filter is not particularly limited. However, in cigarettes that are formed into a rod shape by paper, the cigarette filter is often placed between the mouth or between the mouth and the cigarette. In addition, the cross-sectional outer periphery of the cigarette often corresponds to the cross-sectional outer periphery of the filter, usually 15 to 30 mm, preferably about 17 to 27 mm.

May be degrees.

 [0070]

[Example]

 [0071]

 In the following, the ability to explain the present invention in more detail based on examples.

It is not limited. In the following examples and comparative examples, each characteristic (airflow resistance, nicotine)

Amount, tar amount, and formaldehyde amount) are calculated using commercially available tobacco [Peace 'Light' Box (Registered Trademark No. 21228).

No. 39) (manufactured by Japan Tobacco Inc.)] was measured by the following method.

 [0072]

 [Ventilation resistance]

 Ventilation resistance of a cigarette smoke filter sample prepared using the above cigarette [Peace 'Light' Box (registered trademark) (manufactured by Japan Tobacco Inc.), filter part length 25 mm, circumference approximately 25 mm] was measured. .

 [0073]

 Ventilation resistance was measured using an automatic ventilation resistance measuring instrument (Filtona, FTS300) as the pressure loss (mmWG) when air was passed through the cigarette smoke filter sample at a flow rate of 17.5 mlZ seconds. .

 [0074]

[Nicotine amount, tar amount] Piston type constant capacity automatic smoker using a filter sample for cigarette smoke (Boulder Dondone: t «R

M20ZCS), a total of 10 cigarette smoke filter samples were smoked at a flow rate of 17.5 ml / sec at a smoking time of 2 sec / time and a smoking frequency of 1 min / min. Nicotine and tar in the smoke that passed through the filter were collected by a glass fiber filter (Cambridge filter), and the amount of nicotine was measured using a gas chromatograph (G-3000, manufactured by Hitachi, Ltd.). The amount of tar was measured by a gravimetric method.

 [0075]

 The amount of nicotine and tar adhering to the control Cambridge filter are Tn and Tt, respectively, and the amount of nicotine adhering to the Cambridge filter in the comparative example and the example is Cn, respectively. The removal rate was calculated.

 [0076]

 Nicotine removal rate (%) = 100 X (1 -Cn / Tn)

 Tar removal rate (%) = 100 X (1—Ct / Tt).

 [0077]

 [Formaldehyde removal rate]

 Filter sample for cigarette smoke, piston type constant volume type automatic smoker (RM20 / CS made by Boulder Wald), flow rate 17.5ml / second, smoking time 2 seconds / time, smoking frequency 1 time condition I smoked at. Formaldehyde in the smoke that passed through the filter was collected with DNPH (dinitrophenylhydrazine) solution, derivatized with DNPH, and then UV (ultraviolet) using a gas chromatograph (G-3000 manufactured by Hitachi, Ltd.). ) Absorbance

It was measured.

 [0078]

 The formaldehyde removal rate was calculated by the following formula, using the amount of formaldehyde collected in the control product as Tf and the amount of formaldehyde collected in the following Comparative Examples and Examples as Cf.

 [0079]

 Formaldehyde removal rate (%) = 100 X (1— Cf / Tf).

 [0080]

(Comparative Example 1) Sodium glutamate alone T JP2007 / 067692

In Comparative Example 1, a filter sample for tobacco smoke was prepared as follows using sodium glutamate powder alone. Sodium glutamate (special grade reagent “L-sodium dartrate monohydrate” marketed by Wako Pure Chemical Industries, Ltd.) is placed in an air-conditioned room at 22 ° C and 60% humidity, and is conditioned until equilibrium is reached. I used it. _ '

 [0081]

 Cut 14mm from the end of the filter body (25mm) of cellulose diacetate crimped fiber tow of commercially available tobacco [Peace 'Light' Box (Registered Trademark No. 2122839) (made by Japan Tobacco Inc.)] did. A glass tube having a length of 20 mm and an inner diameter of 8 mm was inserted into the cut long piece, that is, a tobacco leaf filling piece by a length (11 mm) corresponding to the length of the remaining filter, and these were bound with a sealing tape. ,

 [0082]

 The 9 mm space created by this glass tube was filled with lOOmg powder of sodium L-glutamate. Next, the glass tube was plugged using the previously cut short piece, that is, the 14 mm filter section (llOmg). A sealing tape was also applied to the connecting portion between the glass tube and the filter to seal it. Therefore, the filter length of the cellulose diacetate crimped fiber tow is 25πιπι. In addition, the extended 9 mm portion between the filters was filled with sodium L monoglutamate particles. L The amount of sodium monoglutamate was lOOmg per cigarette (or cigarette smoke filter sample, hereinafter the same for the term “cigarette”). '

 [0083]

 The obtained cigarette smoke filter sample was measured for the ventilation resistance, nicotine, tar content, and formaldehyde content. Then, the nicotine, tar and formaldehyde removal rate (reduction rate) was calculated by the above formula. The nicotine removal rate was 1%, the tar removal rate was 12%, the formaldehyde removal rate was 23%, and the ventilation resistance was 191mmWG.

 [0084]

 A control product for evaluating the removal rate of nicotine, tar and formaldehyde was prepared in the same manner as above except that it was not filled with sodium L-daltartate powder (the examples below). And the same in the comparative example).

[0085] (Comparative Example 2) Silica gel alone

 In Comparative Example 2, silica gel (manufactured by Fuji Silysia Co., Ltd., “MB4B equivalent crushed product”, particle size 14 to 32 mesh) was used alone. Silica gel was used after conditioning in the air-conditioned room in the same manner as in Comparative Example 1. Table 1 shows the properties of this silica gel. Then, as in Comparative Example 1, silica gel was filled between the filters. The loading of silica gel was 1 OOmg per cigarette.

 [0086]

 With respect to the obtained filter sample for tobacco smoke, the above-mentioned ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured. Then, nicotine, tar and formaldehyde removal rates were calculated by the above formula. The nicotine removal rate was 0%, the tar removal rate was 13%, the formaldehyde removal rate was 58%, and the ventilation resistance was 183mmWG.

 [0087]

 (Comparative Example 3) Silica gel alone

 In Comparative Example 3, silica gel (manufactured by Fuji Silysia Co., Ltd., “MB300 equivalent broken product”, particle size 16-32 mesh) was used alone. Silica gel was used after conditioning in the air-conditioned room in the same manner as in Comparative Example 1. Table 1 shows the properties of this silica gel. In the same manner as in Comparative Example 1, silica gel was filled between the filters. The filling amount of silica gel was 1 OOmg per cigarette.

 [0088] The obtained cigarette smoke filter sample was measured for the above-mentioned ventilation resistance, nicotine, tar content, and formaldehyde content. Then, nicotine, tar and formaldehyde removal rates were calculated by the above formula. The nicotine removal rate was 8%, the tar removal rate was 12%, the formaldehyde removal rate was 54%, and the ventilation resistance was 178mmWG.

 [0089] ",

 (Example D GL300

 In Example 1, a complex of sodium glutamate and silica gel was used. The complex was prepared by the following method.

 [0090]

5 g of silica gel (manufactured by Fuji Silysia Co., Ltd., ΓΜΒ300 equivalent crushed product, particle size 16-32 mesh) is placed in a glass container, and the sodium glutamate used in Comparative Example 1 (L 2

Add 7 g of 3% aqueous solution of humic monohydrate) and stir with a glass rod for about 5 minutes until the aqueous solution of sodium glutamate is absorbed by the silica gel and appears to be homogeneous, apparently uniform A particulate water-containing mixed composition was obtained.

 [0091]

 The obtained water-containing mixed composition is dried using a vacuum dryer at a temperature of 60 ° C until there is no change in weight, and then left in an air-conditioned room at 22 ° C and humidity of 60% until there is no change in weight. As a result, a composite sample “GL300” for evaluation was obtained.

 [0092]

 The composite sample “GL300” lOOmg was filled in tobacco in the same manner as in Comparative Example 1. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. Nikotin removal rate was 11%, tar removal rate was 17%, formaldehyde removal rate was 69%, and ventilation resistance was 195 匪 WG.

 [0093]

 (Example 2) GLG300

Instead of sodium glutamate, 2 weight ⁰ /. In the same manner as in Example 1 except that a 3% by weight aqueous solution of sodium glutamate containing glycerin was used, a composite sample for evaluation containing glycerin “GLG30

Got 0J.

 [0094]

 100 mg of this composite sample “GLG300” was filled into cigarettes in the same manner as in Comparative! II. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 14%, the tar removal rate was 20%, the formaldehyde removal rate was 68%, and the ventilation resistance was 19 OmmWG.

 [0095]

 (Example 3) GL300D

In Example 3, a complex of sodium glutamate and silica gel was used. The composite was prepared by the following method (dipping method). [0096]

 10 g of a 3% by weight aqueous solution of sodium glutamate (L monosodium glutamate monohydrate) as in Comparative Example 1 is placed in a glass container, and silica gel (manufactured by Fuji Silysia Co., Ltd., “MB300 equivalent crushed product” '', Particle size 16-32 mesh) After adding 5 g and stirring for about 5 minutes using a stirrer chip, the solid matter is filtered off using a puffer funnel, and an apparently uniform water-containing mixed composition Got.

 [0097]

 The obtained water-containing mixed composition was dried using vacuum drying at a temperature of 60 ° C until there was no change in weight, and then left in an air-conditioned room at 22 ° C and humidity of 60% until there was no change in weight. A composite sample “GL300D” for evaluation was obtained.

 [0098]

In the same manner as in Comparative Example 1, 100 mg of this composite sample “GL300D” was filled into cigarettes. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 11 o / ₀ , the tar removal rate was 13%, the formaldehyde removal rate was 69%, and the ventilation resistance was 19 OmmWG.

 [0099]

 (Example 4) GL300DH

 A composite sample for evaluation “GL300DH” was obtained in the same manner as in Example 3, except that 5 hours of hot air drying was used for 2 hours at 105 ° C. instead of vacuum drying.

 [0100]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GL300DH” was filled in cigarettes. The ventilation resistance, nicotine, tar content and formaldehyde content were measured for the obtained tobacco smoke filter sample. And the removal rate of nicotine, tar, and formaldehyde was computed by the said formula. The nicotine removal rate was 13%, the tar removal rate was 13%, the formaldehyde removal rate was 68%, and the ventilation resistance was 183 mmWG. '

 [0101]

(Example 5) 5GL300 Instead of 3 weight _^0/0 aqueous solution of sodium glutamate, except for using 0.5 wt% of sodium glutamate solution, in the same manner as in Example 1 to obtain a "5GL300" complex sample for evaluation.

 [0102]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “5GL300” was filled into cigarettes. The obtained smoke resistance, nicotine, tar content, and formaldehyde content of the filter sample for tobacco smoke were measured. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 12%, the tar removal rate was 11%, the formaldehyde removal rate was 72 °, and the ventilation resistance was 19 lmmWG.

 [0103]

 (Example 6) 1GL300

Instead of 3% by weight aqueous solution of sodium glutamate, except for using Gunoretamin aqueous solution of sodium 0.1 wt _^0/0, in the same manner as in Example 1 to obtain a "1GL300" complex sample for evaluation.

 [0104]

 This composite sample “1GL300J lOOmg was filled into a cigarette in the same manner as in Comparative Example 1. The obtained airflow resistance, -cotin, tar amount, and formaldehyde amount were measured for the obtained cigarette smoke filter sample. The removal rate of nicotine, tar and formaldehyde was calculated according to the above formula: the removal rate of nicotine was -3%, the removal rate of tar was 5 °, the removal rate of formaldehyde was 68%, and the ventilation resistance was 188 mmWG.

 [0105]

 (Example 7) GS300EQ

 In Example 7, a complex of glycine (a special grade reagent commercially available from Wako Pure Chemical Industries, Ltd.) and silica gel was used. The composite was prepared by the following method.

 [0106]

 A complex sample “GS300EQ” for evaluation was obtained in the same manner as in Example 1 except that a 1.2 wt% glycine aqueous solution was used instead of the 3 wt% aqueous solution of sodium glutamate.

 [0107]

In the same manner as in Comparative Example 1, 100 mg of this composite sample “lGL300” was filled into cigarettes. Regarding the obtained filter sample for cigarette smoke, the above-mentioned ventilation resistance, nicotine, tar amount, formaldehyde amount Was measured. And the removal rate of nicotine, tar, and formaldehyde was computed by the said formula. Nicotine removal rate _110/0, tar removal rate of 16% formaldehyde removal rate 73%, the ventilation resistance was 17 6mmWG.

 [0108]

 (Example 8) PA300EQ

 In Example 8, a complex of phenylalanine and silica gel was used. Felanalanin is commercially available from Wako Pure Chemical Industries, Ltd. The L-phenolalanine special grade reagent was used, and the complex was prepared by the following method.

 [0109]

Obtained except for using phenylene Ruaranin solution, in the same manner as in Example 1, a complex sample for evaluating the "PA300EQ" - instead of 3 weight _^0/0 aqueous solution of sodium glutamate, 2.7 wt% Works It was.

 [0110]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “PA300EQ” was filled into cigarettes. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 12%, the tar removal rate was 8%, the formaldehyde removal rate was 70%, and the ventilation resistance was 183 mmWG.

 [0111]

 (Example 9) LSGT300EQ

 In Example 9, a complex of lysine monoglutamate and silica gel was used. As the lysine monoglutamate, a L-lysine-L-glutamate special grade reagent commercially available from Wako Pure Chemical Industries, Ltd. was used, and a complex was prepared by the following method.

 [0112]

 A composite sample for evaluation “LSGT300EQ” was obtained in the same manner as in Example 1, except that a 1.6% by weight monolysine mono-L glutamate aqueous solution was used instead of the 3% by weight aqueous sodium glutamate solution. .

[0113] In the same manner as in Comparative Example 1, 100 mg of this composite sample “LSGT300EQ” was filled into cigarettes. The obtained cigarette smoke filter sample was measured for the ventilation resistance, nicotine, tar content, and formaldehyde content. The nicotine, tar and formaldehyde removal rates were calculated using the above formula. Nicotine removal rate was 5%, tar removal rate was 12%, formaldehyde removal rate was 72%, and airflow resistance was 180mmWG.

 [0114]

 (Example 10) AGCL300EQ

 In Example 10, a complex of arginine hydrochloride and silica gel was used. Arginine hydrochloride was prepared by the following method using L-arginine hydrochloride special grade reagent commercially available from Wako Pure Chemical Industries, Ltd.

 [0115]

 A composite sample for evaluation “AGCL300EQ” was obtained in the same manner as in Example 1 except that a 1.7 wt% monoarginine hydrochloride aqueous solution was used instead of the 3 wt% aqueous solution of sodium glutamate.

 [0116]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “AGCL300EQ” was filled into cigarettes. The obtained cigarette smoke filter sample was measured for the ventilation resistance, nicotine, tar content, and formaldehyde content. Then, the removal rates of nicotine, tar and formaldehyde were calculated by the above formula. Nicotine removal rate was 11%, tar removal rate was 15%, formaldehyde removal rate was 66%, and airflow resistance was 183mmWG.

 [0117]

 (Example 1 DAGCL300

 In Example 11, a complex of arginine hydrochloride and silica gel was used. Anoleginine hydrochloride was sold by Wako Pure Chemical Industries, Ltd., and L-Arginine hydrochloride special grade reagent was used, and the complex was prepared by the following method.

 [0118]

Instead of a 3% by weight aqueous solution of sodium glutamate, 3.0% ⁰ /. A composite sample for evaluation “AGCL300” was obtained in the same manner as in Example 1 except that the L monoarginine hydrochloride aqueous solution was used.

[0119] The composite sample “AGCL300J 100 mg was filled into tobacco in the same manner as in Comparative Example 1. The obtained smoke resistance filter sample was measured for the above-mentioned ventilation resistance, nicotine, tar amount, and formaldehyde amount. The removal rate of nicotine, tar and formaldehyde was calculated by the above formula: The removal rate of nicotine was 4%, the removal rate of tar was 13%, the removal rate of formaldehyde was 65%, and the airflow resistance was 187 mmWG.

 [0120]

 (Example 12) TR300EQ

 In Example 12, a complex of taurine and silica gel was used. The composite was prepared by the following method.

 [0121]

 5 g of silica gel (Fuji Silysia Co., Ltd., “MB300 equivalent crushed product”, particle size 16-32 mesh) is placed in a glass container, and Taurine (Wako Pure Chemical Industries, Ltd., “Reagent Grade 1”) is placed in this glass container. Add 4 · 7 g of a 20% by weight aqueous solution of water and stir with a glass rod for about 5 minutes until the aqueous solution of taurine is absorbed by the silica gel and become homogeneous. A mixed composition was obtained.

 [0122]

 The obtained water-containing mixed composition is dried using a vacuum dryer at a temperature of 60 ° C until there is no change in weight, and then left in an air-conditioned room at 22 ° C and humidity of 60% until there is no change in weight. As a result, a composite Sampnole “TR300EQ” for evaluation was obtained.

 [0123]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “TR300EQ” was filled in cigarettes. The ventilation resistance, nicotine, tar content and formaldehyde content were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The removal rate of nicotine was 10%, the removal rate of tar was 10%, the removal rate of formaldehyde was 61%, and the ventilation resistance was 180 WG.

 [0124]

 (Comparative Example 4) 800 alone

In Comparative Example 4, silica gel (manufactured by Fuji Silysia Co., Ltd., “MB800 equivalent broken product”, particle size 16 to 32 mesh) was used alone. Silica gel was used after conditioning in the air-conditioned room in the same manner as in Comparative Example 1. This Table 1 shows the properties of licagel. Then, as in Comparative Example 1, silica gel was filled between the filters. The filling amount of Siri force gel was lOOmg per cigarette.

 [0125]

 The cigarette smoke filter sample was measured for the ventilation resistance, nicotine, tar content and formaldehyde content. Then, the removal rates of nicotine, tar and formaldehyde were calculated by the above formula. Nicotine removal rate was 14%, tar removal rate was 13%, formaldehyde removal rate was 42%, and airflow resistance was 196mmWG.

 [0126]

 (Example 13) GL800

 In Example 13, a complex of sodium glutamate and silica gel was used. The complex was prepared by the following method.

 [0127]

5 g of silica gel (manufactured by Fuji Silysia Co., Ltd., ΓΜΒ800 equivalent broken product), particle size 16-32 mesh) is placed in a glass container, and sodium glutamate (L-sodium glutamate monohydrate) as in Comparative Example 1 is placed in this glass container. and添Ka卩3wt _^0/0 aqueous solution 4. 8 g of until an aqueous solution of sodium glutamate is uniform state apparently absorbed onto silica gel and stirred for about 5 minutes with a glass rod, apparently homogeneous particulate A water-containing mixed composition was obtained.

 [0128]

 The obtained water-containing mixed composition is dried using a vacuum dryer at a temperature of 60 ° C until there is no change in weight, and then left in an air-conditioned room at 22 ° C and humidity of 60% until there is no change in weight. The composite sample “GL800J for evaluation” was obtained.

 [0129]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GL800” was filled in cigarettes. The obtained cigarette smoke filter sample was measured for the ventilation resistance, -cochin, tar content, and formaldehyde content. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. Nicotin removal rate was 18%, tar removal rate was 20%, formaldehyde removal rate was 52%, and ventilation resistance was 186 mmWG.

[0130] (Example 14) GLG800

Instead of sodium glutamate, 2 weight ⁰ /. A composite sample for evaluation containing glycerin “GLG80” was prepared in the same manner as in Example 13 except that a 3 wt% aqueous solution of sodium glutamate containing glycerin was used.

0 ”was obtained.

 [0131]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GLG800” was filled into a cigarette. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the removal rate of nicotine, tar, and formaldehyde was computed by the said formula. The nicotine removal rate was 4%, the tar removal rate was 16%, the formaldehyde removal rate was 64%, and the ventilation resistance was 177 mmWG.

 [0132]

 (Comparative Example 5) Silica gel alone

 In Comparative Example 5, silica gel (manufactured by Fuji Silysia Co., Ltd., “MB1000 equivalent crushed product”, particle size 14 to 32 mesh) was used alone. Silica gel was used after conditioning in the air-conditioned room in the same manner as in Comparative Example 1. Table 1 shows the properties of this silica gel. In the same manner as in Comparative Example 1, silicagenole was filled between the filters. The filling amount of silica gel was lOOmg per cigarette.

 [0133]

 With respect to the obtained filter sample for tobacco smoke, the above-mentioned ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured. Then, nicotine, tar and formaldehyde removal rates were calculated by the above formula. The nicotine removal rate was 7%, the tar removal rate was 8%, the formaldehyde removal rate was 40%, and the aeration resistance was 177 mmWG.

 [0134]

 (Cold application 15) GL1000

 In Example 15, a complex of sodium glutamate and silica gel was used. The complex was prepared by the following method.

 [0135]

5 g of silica gel (manufactured by Fuji Silysia Co., Ltd., “MB1000 equivalent crushed product”, particle size 14 to 32 mesh) is placed in a glass container, and the same sodium glutamate (L monosodium glutamate as in Comparative Example 1) is placed in this glass container. 2007/067692

Add 3 g of a 3 wt% aqueous solution of monohydrate) and stir with a glass rod for about 5 minutes until the aqueous solution of sodium glutamate is absorbed into the silica gel and becomes an apparently uniform state. A water-containing mixed composition was obtained.

 [0136]

 The obtained water-containing mixed composition is dried using a vacuum dryer at room temperature until there is no change in weight, and then left in an air-conditioned room at 22 ° C and humidity 60% until there is no change in weight. A composite sample “GL 1000” for evaluation was obtained. Table 2 shows the properties of the obtained composite.

 [0137]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GL1000” was filled into cigarettes. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 1%, the tar removal rate was 7%, the formaldehyde removal rate was 62%, and the ventilation resistance was 191 mmWG.

 [0138]

 (Example 16) GLG 1000

Alternatively, 2 wt 3 wt _^0/0 aqueous solution of sodium glutamate. /. A composite sample for evaluation “GLG1000” containing glycerin was obtained in the same manner as in Example 15, except that a 3 wt% aqueous solution of sodium glutamate containing glycerin was used.

 [0139]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GLG1000” was filled into a cigarette. The ventilation resistance, nicotine, tar content and formaldehyde content were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. -Cotin removal rate was 13%, tar removal rate was 6%, formaldehyde removal rate was 63%, and ventilation resistance was 194 riimWG.

 [0140]

 (Example 17) 30A G1000

In Example 17, a complex of arginine and silica gel was used. Arginine was sold by Wako Pure Chemical Industries, Ltd., and L-Argiyun special grade reagent was used. The composite was prepared by the following method. jg 0 9

[0141]

 3 weights of sodium glutamate. /. Instead of an aqueous solution, a 3% by weight aqueous solution of L-arginine was used.

A composite sample for evaluation “30ARG1000” was obtained in the same manner as Example 15 except for the above.

 [0142]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “30A G1000” was filled in cigarettes. Obtained

The above-mentioned ventilation resistance, nicotine, tar content, formaldehyde for filter samples for tobacco smoke

Measurement of the amount of the laser was performed. The nicotine, tar and formaldehyde removal rate is calculated by the above formula.

It was. Nicotine removal rate is 9%, tar removal rate is 14%, formaldehyde removal rate is 70%, ventilation resistance is 1

It was 87mmWG.

 [0143]

 (Example 18) 1O0ARG1000

 Instead of using a 3 wt% aqueous solution of L-arginine, a 10 wt% aqueous solution of L-arginine was used

In the same manner as in Example 17, a composite sample “100ARG1000” for evaluation was obtained.

 [0144]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “100ARG1000” was filled into cigarettes. Gain

The above airflow resistance, nicotine, tar amount, formaldehyde

The amount of hydration was measured. And nicotine, tar and formaldehyde removal rate is calculated by the above formula

did. Nicotine removal rate is 1-2%, tar removal rate is 6%, formaldehyde removal rate is 65%, ventilation resistance

Was 179mmWG.

 [0145]

 (Comparative Example 6) Silica gel alone

 In Comparative Example 6, silica gel (manufactured by Fuji Silysia Co., Ltd., “MB3000 equivalent crushed product”, particle size 16-32

Mesh) was used alone. Silica gel was used after conditioning in the air-conditioned room in the same manner as in Comparative Example 1. this

Table 1 shows the properties of silica gel. Then, as in Comparative Example 1, silica gel was filled between the filters. Shi

The filling amount of licagel was lOOmg per cigarette.

 [0146]

 For the obtained filter sample for tobacco smoke, the above-mentioned ventilation resistance, nicotine, tar amount, formaldehyde

The amount of aldehyde was measured. And the removal rate of nicotine, tar and formaldehyde by the above formula Calculated. Nicotine removal rate was -3%, tar removal rate was 4%, formaldehyde removal rate was 44%, and airflow resistance was 182mmWG.

 [0147]

 (Example 19) GL3O00

 In Example 19, a complex of sodium glutamate and silica gel was used. The complex was prepared by the following method.

 [0148]

 Take 5g of silica gel (manufactured by Fuji Silysia Co., Ltd., “MB3000 equivalent broken product”, particle size 16-32 mesh) into a glass container, and add the same sodium glutamate (L-sodium glutamate as hydrate to Comparative Example 1) to this glass container. ) 3 weight. /. 4.3 g of an aqueous solution was added, and the mixture was stirred with a glass rod for about 5 minutes until the aqueous solution of sodium glutamate was absorbed into the silica gel and became an apparently uniform state, and an apparently uniform water-containing mixed composition was obtained.

 [0149]

 The obtained water-containing mixed composition is dried using a vacuum dryer at room temperature until there is no change in weight, and then left in an air-conditioned room at 22 ° C and humidity 60% until there is no change in weight. A composite sample “GL 3000” for evaluation was obtained. Table 2 shows the properties of the obtained composite.

 [0150]

 In the same manner as in Comparative Example 1, 100 mg of this composite sample “GL3000” was filled into cigarettes. The ventilation resistance, nicotine, tar amount, and formaldehyde amount were measured for the obtained tobacco smoke filter sample. And the nicotine, tar, and formaldehyde removal rate were computed by the said formula. The nicotine removal rate was 12%, the tar removal rate was 17%, the formaldehyde removal rate was 42%, and the ventilation resistance was 194 mmWG.

 [0151]

 (Example 20) GLG3000

Instead of 3% by weight aqueous solution of sodium glutamate, 3 weight glutamate isocyanatomethyl Riumu containing 2 wt% Glycerin ⁰ /. A composite sample for evaluation “GLG3000” containing glycerin was obtained in the same manner as in Example 19 except that the aqueous solution was used. Table 2 shows the properties of the obtained composite.

[0152] The composite sample “GLG3000J 100 mg was filled into cigarettes in the same manner as in Comparative Example 1. The obtained smoke resistance filter sample was measured for the ventilation resistance, nicotine, tar amount, and formaldehyde amount. The nicotine, tar and formaldehyde removal rates were calculated according to the above formula: The nicotine removal rate was 10%, the tar removal rate was 18%, the formaldehyde removal rate was 68%, and the ventilation resistance was 184 mmWG.

 [0153]

 Properties of silica gel Table 1 shows.

 [0154]

 The results are shown in Table 2 and Table 3 together with the composition of each component (or the composition of the composite) in the filter sample for tobacco smoke. In Tables 2 and 3, “FA” means “formaldehyde”, “Tar” means “tal”, “Nico. J” means “nicotine”, and “PD” means “venting resistance”. “Retention rate (%)” can be calculated by subtracting the removal rate (%) from 100 (%).

 [0155]

 table 1

 Physical properties Particle size Silica Genole Average pore Specific surface area Pore volume Parallel moisture

 Mesh Thigh diameter (mm) (m / g) (ml / g) Rate (%)

 MB4B equivalent crushed product 7.0 522 0.67 14,60 14-32 0.5-1.18

MB300 equivalent 29.6 112 0.99 0.98 16-32 0.5-1.00

MB800 equivalent crushed product 84.2 41 1.01 0.77 16-32 0.5-1.00

MB1000 equivalent crushed product 97.9 38 1.10 0.72 14-32 0.5-1.18

MB3000-equivalent shredded product 318.0 9 0.90 0.19 16-32 0.5-1.00

[0156]

 Table 2

 Contained S (mg) in filter sample (%)

 Silica PD Experimental example Amino compounds

 Gel Silica Glyme mm WG Water FA Tar Ni co Moisture Gel Compound Phosphorus

Comparative Example 1 None Glutamic acid Na 1 99.8 0. 2-77 88 101 69 191 Comparative Example 2 4B None 91.8-9.2-42 87 100 66 183 Comparative Example 3 300 None 99.0-1.0-46 88 92 91 178 Example 1 300 Glutamic acid Na 94.1 2.7 3.2-31 83 89 72 195 Example 2 300 Glutamate 92.7 2.7 2.8 1.8 32 80 86 64 190 Example 3 300 Glutamate Na 92.7 3. 3 3.8 1 31 87 89 74 190 Example 4 300 Glutamate Na 93.8 3.3 2.8-32 87 87 8S 183 Example 5 300 Glutamate Na 97.1 0.5 2.4-28 89 88 86 191 Example 6 300 Glutamate Na 97.6 0. 1 2.4-32 95 103 83 188 Example 7 300 Glycine 96.5 1 1 2.4-27 84 89 76 176 Example 8 300 Phenylalanin 95.7 2.4 1. 9-30 92 88 76 183 Example 9 Lysine letter

 300 g

 96. 3 1.4 2.2-28 88 95 76 180 Sodium acid

Example 1 0 300 Arginine hydrochloride 96.0 1.6 2.4-34 85 89 71 183 Example 1 1 300 Arginine hydrochloride 95.0 2.7 2.3-35 87 96 77 187 Example 1 2 300 Taurine 96.0 1.8 2. 2-39 90 90 77 180

 [0157] Content in filter sample (mg) Retention rate (%)

 Silica PD Experimental example Amino compounds

 Gel Silica Glyme mm WG Water FA Tar Ni co Moisture Gel Compound Phosphorus

Comparative Example 4 800 None 99.2 One 0.8-58 87 104 85 196 Example 1 3 800 Glutamate Na 95.8 2.8 1.4 One 48 80 82 74 186 Example 1 4 800 Glutamate Na 93.4 2.7 2.0 1. 9 36 84 96 68 177 Comparative Example 5 1000 None 99. 3 One 0.7-60 92 93 86 177 Example 1 5 1000 Glutamate Na 94.8 3. 1 2.2-38 93 99 75 191 Example 1 6 1000 Glutamine 睃 Na 92.8 3.0 2.2 2. 1 37 94 103 77 194 Example 1 7 1000 Arginine 95.6 3.0 1. 3-30 86 91 85 187 Example 1 8 1000a J Legginin 87.7 9.4 2.9-35 94 102 89 179 Comparative Example 6 3000 None 99.8 One 0.2-56 96 103 90 182 Example 1 9 3000 Glutamate Na 97.3 2.5 0. 2-58 83 88 78 194 Example 2 0 3000 Glutamate Na 94.4 2.4 1. 5 1. 7 32 82 90 76 184 Industrial applicability

 The compositions of the present invention are useful in constructing filters, particularly tobacco filters (and tobacco). In such a cigarette filter (and cigarette) of the present invention, when smoking, it retains odor components such as nicotine and tar, while maintaining appropriate ventilation resistance. It is possible to selectively remove aldehydes such as formaldehyde, which are harmful to the human body, without sacrificing satisfaction.

Claims

167692WO 2009/031248 n r_ PCT / JP2007 / 067692 35 Claims  1. Amino acids Opino aminosulfonic acid power At least one selected amino compound and silica gel  A composition composed of  2. The composition according to claim 1, wherein the amino compound is a composite supported on silica gel.  3. The composition according to claim 1, wherein the silica gel has an average pore diameter of 20 nm or more.  4. Silica gel has an equilibrium moisture content of 0.01 to 5% at a temperature of 23 ° C and 60% RH.  The composition as described.  5. The proportion of the amino compound is from 0.03 to 15 parts by weight based on 100 parts by weight of silica gel.  Composition.  6. (i) The amino compound is composed of an a-amino acid or a salt thereof, and (ii) silica gel has an average pore diameter of 25ηιη Thus, silica gel having a specific surface area of 5 to 150 m ² / g, an equilibrium moisture content of 0.1 to 3% at a temperature of 23 ° C. and 60% RH, and the ratio of () amino compound is 0 The composition according to claim 1, which is in an amount of from 05 to io parts by weight.  7. The composition of claim 1, further comprising a humectant.  8. The composition according to claim 7, wherein the humectant comprises a polyol.  9. Silica gel is silica gel with an average pore diameter of 25mn or more, moisturizing agents are polyols, moisturizing  The composition according to claim 7, wherein the ratio of the agent is 0.1 to 10 parts by weight with respect to 100 parts by weight of silica gel.  10. The composition according to claim 1, which is used for a tobacco filter.  11. A tobacco filter comprising the composition according to claim 1.  12. A tobacco comprising the tobacco filter according to claim 11.