WO2000038643A1 - Mundpflegemittel, enthaltend sphärische mikropartikel auf basis linearer wasserunlöslicher polyglucane - Google Patents
Mundpflegemittel, enthaltend sphärische mikropartikel auf basis linearer wasserunlöslicher polyglucane Download PDFInfo
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- WO2000038643A1 WO2000038643A1 PCT/EP1999/009296 EP9909296W WO0038643A1 WO 2000038643 A1 WO2000038643 A1 WO 2000038643A1 EP 9909296 W EP9909296 W EP 9909296W WO 0038643 A1 WO0038643 A1 WO 0038643A1
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- water
- oral care
- microparticles
- care product
- insoluble
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/73—Polysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/02—Stomatological preparations, e.g. drugs for caries, aphtae, periodontitis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/60—Particulates further characterized by their structure or composition
- A61K2800/65—Characterized by the composition of the particulate/core
- A61K2800/654—The particulate/core comprising macromolecular material
Definitions
- Oral care products containing spherical microparticles based on linear water-insoluble polygiucans containing spherical microparticles based on linear water-insoluble polygiucans
- the present invention relates to an oral care product which contains spherical microparticles based on linear water-insoluble polygiucans as an essential component.
- polyglucans in oral care products, in particular toothpaste and chewing gums for dental hygiene, has long been known.
- starch consists of two different polyglucans, amylose and amylopectin, the proportion of which varies
- Amylose is a water-soluble linear 1,4-linked poly- ⁇ -glucan with a
- amylopectin is water-insoluble and has a highly branched structure with 1, 4 and 1, 6 linkages with a molecular weight of 300,000 to 2,000,000.
- Ceiiulose Another common polyglucan is Ceiiulose, which is insoluble in water and
- Starch and its components are used in oral care products as
- Gelling agent, filler, thickener or binder used for example, EP-B-0 502 895 describes a thickener for toothpastes which, in addition to a linear polymeric non-starch compound such as cellulose and its derivatives, for example carboxymethyl or hydroxyethyl cellulose, contains a branched starch.
- Branched starch here means a starch which consists at least 70% of branched polyglucans and preferably has a molecular weight of 1,000,000 to 2,000,000. It is known to derivatize starch or its polyglucan components in order to achieve certain properties.
- US Pat. No. 5,009,882 relates to the use of a carboxylated starch in oral care products such as toothpastes or mouthwashes to prevent plaque formation.
- the starch molecule described here is composed of non-carboxylated glucan blocks and carboxylated glucan blocks with a degree of carboxylation of 1 to 3, the carboxylation taking place with the ring opening of the glucan unit.
- EP-A-0 673 605 proposes a particulate matrix as a carrier for an aroma substance such as lemon oil, with which the storage stability of the aroma substance e.g. in toothpastes and chewing gums for oral hygiene.
- the matrix consists of a mixture of a hydrogenated starch hydrolyzate and maltodextrose, the hydrolyzed starch hydrolyzate being a polyol with a
- Degree of polymerization is at most 4, of which one terminal glucan unit is opened hydrolytically.
- tooth cleaning agents such as tooth pastes, tooth powder and chewing gum should be cleaned gently without being abrasive to protect the tooth enamel. This presupposes that these agents do not contain any components that can have an abrasive effect.
- a wide variety of active ingredients are often added to mouth care products to improve their nourishing properties. So that these active ingredients can be fully effective, it is advantageous to incorporate them into a suitable matrix that ensures optimal release at the target site.
- spherical microparticles which consist wholly or partly of at least one water-insoluble linear polyglucan is essential for the oral care products according to the invention.
- oral care means both agents that either serve only to clean the oral cavity and are therefore attributable to cosmetics, as well as agents that also have therapeutic purposes due to additional active ingredients with specific preventive and healing properties and are therefore to be regarded as medicinal products.
- oral care products are mouthwashes, mouth powder, mouth pills, mouth sprays, denture, prosthetic and dental care products such as toothpastes, tooth gels, tooth cleaning powder and chewing gum to improve oral hygiene, but also plaque stain tablets to make dental plaque visible, e.g. B. as a control.
- microparticles used in oral care products according to the invention are particularly notable for their multifunctionality and can be used and adapted for a large number of very different applications, so that they can be used to obtain targeted oral care products for a wide variety of uses.
- microparticles can replace the conventional polygiucans previously used in oral care products and take on their function as thickeners, binders, fillers or gelling agents.
- microparticles used according to the invention have very good dispersibility. It has been shown that they can also be used without the addition of other aids
- Dispersing aids can form a stable dispersion that remains stable even over a long period of time.
- This property is of particular importance for the production of suitable formulations for oral care products, since it is often possible to dispense with the addition of dispersing auxiliaries or the amount of dispersing auxiliaries can be reduced, as a result of which the production can be simplified and cheaper.
- toothpastes in transparent form called gel, which optimize the plaque-removing effect of toothbrushes due to their content of cleaning and polishing bodies as well as surface-active substances and, if necessary, apply active ingredients such as fluorides to protect the tooth and tooth-holding apparatus.
- the microparticles used according to the invention do not have an abrasive effect and can therefore be used advantageously in dental care products.
- microparticles are an excellent carrier material for active ingredients such as healing or nourishing substances, flavorings, etc.
- the active ingredient can be added to the starting compounds used for the production of the microparticles, so that the microparticles are present from a mixture of starting compound and active ingredient.
- the active ingredient can be encapsulated in the microparticles, the usual ones
- Encapsulation techniques can be used. Suitable examples are emulsion processes or spray drying processes. The last term also includes spray processes in which the particles are sprayed with a solution of the active ingredient in a fluidized bed or in an analogous process. Furthermore, the active ingredient can be absorbed and / or adsorbed on the microparticle surface by z. B. the active ingredient and the microparticles suspended in a suitable medium, allowed to stand until equilibrium is reached and then the particles loaded with active ingredient are separated.
- microparticles used according to the invention can be designed for the controlled release of active substance.
- Controlled release of active substance is understood to mean that the active substance is not released immediately and all at once, but that the release takes place via a certain one
- the release rate can be chosen arbitrarily depending on the intended use. It can be constant over time, or it can be large initially, followed by slow release. Controlled release of active ingredient can e.g. B. advantageous for dentition and
- Prosthesis cleaning agents that act on the denture or prosthesis for a longer period of time, for chewing gum to achieve a uniform effect and long-lasting taste, or for targeted local administration in the oral cavity, throat, teeth, etc., the can also be summarized under the terms "mucosal” or “buccal” applications, for example also in the form of so-called drug delivery systems.
- Microparticles as agents for the controlled release of active substances are the unpublished German application of the applicant with the official file number 198 16 070.4 “prolonged-release tablet, made from linear water-insoluble polysaccharides ", to which express reference is made here in this connection.
- mouth sprays can advantageously be applied to the microparticles used according to the invention
- Aerosol base can be obtained.
- Spherical microparticles are to be understood as microparticles which have approximately spherical shape. When a sphere is described by axes of the same length that start from a common origin and are directed into space
- the spherical particles can deviate from the ideal length of the sphere by 1% to 40%.
- the deviation is preferably 25% or less, particularly preferably 15% or less.
- the microparticles can have an average diameter Dn (number average) of 1 nm to 100 ⁇ m, preferably 100 nm to 15 ⁇ m, and particularly preferably 300 nm to 3 ⁇ m.
- the average diameter can vary depending on the type of oral care product.
- Small microparticles with an average diameter of 15 ⁇ m or less are particularly suitable for use in oral care products.
- the surface of the spherical particles can be compared macroscopically with a raspberry, the depth of irregularities on the particle surface, such as indentations or cuts, being a maximum of 20%, preferably 10%, of the mean diameter of the spherical microparticles.
- the specific surface area of the microparticles is in general from 1 m 2 / g to 100 m 2 / g, preferably 1.5 m 2 / g to 20 m 2 / g and particularly preferably 3 m / g to 10 m 2 / g. Furthermore, the particles used according to the invention preferably show one
- Dispersity D weight average of the diameter (d w ) / number average of the
- Diameter (d n ) from 1.0 to 10.0, in particular from 1.5 to 5.0 and particularly preferably from 2.0 to 3.0.
- weight means a weighted average, which means that the larger diameters are more important.
- Microparticles whose surface has been modified can also be used for the present invention, for example by derivatization of functional groups such as the hydroxyl groups of the starting polyglucan compound.
- Linear water-insoluble polygiucans for the purposes of the present invention are polysaccharides which are composed of glucans as monomeric building blocks in such a way that the individual building blocks are always linked to one another in the same way.
- Each basic unit or building block defined in this way has exactly two links, one each to a different monomer. The only exception are the two basic units that form the beginning and the end of the polysaccharide. These have only one link to another monomer and form the end groups of the linear polyglucan.
- branching If the basic unit has three or more links, this is referred to as branching.
- the number of hydroxyl groups per 100 results Basic units that are not involved in the construction of the linear polymer backbone and form the branches, the so-called degree of branching.
- the linear water-insoluble polygiucans have a degree of branching of at most 8%, i.e. they have a maximum of 8 branches per 100 basic units.
- the degree of branching is preferably less than 4% and in particular a maximum of 2.5%.
- polygiucans whose degree of branching in the 6-position is less than 4%, preferably at most 2% and in particular at most 0.5%, and in the other positions, e.g. B. in 2- or 3-position, preferably at most 2
- Polygiucans with a branching in the 6-position of less than 0.5% are also particularly preferred. Polygiucans which are not suitable are particularly suitable for the invention
- Examples of preferred water-insoluble linear polygiucans are linear poly-D-glucans, the type of linkage being immaterial as long as there is linearity in the sense of the invention.
- Examples are poly-alpha-D-glucans, in particular poly (1,4-alpha-D-glucan), and poly (1,3-beta-D-glucans)
- polygiucans used according to the invention can be of any origin as long as the conditions given above with regard to the terms “linear” and “water-insoluble” are met. They can be obtained naturally or by biotechnological means.
- they can be obtained from natural plant or animal sources by isolation and / or purification.
- Sources can also be used which have been genetically manipulated in such a way that they contain a higher proportion of non-or comparatively slightly branched polyglucans compared to the unmanipulated source.
- Non-linear polyglucans which contain branches can be treated with an enzyme in such a way that the branches are split, so that linear polygiucans are present after their separation.
- enzymes can be, for example, amylases, isoamylases, gluconohydrolases, cyclomaltodextrin glucanotransferases or pullulanases.
- Biotechnical methods include biocatalytic, also biotransformatory, or fermentative processes.
- Linear polygiucans produced by biocatalysis also: biotransformation
- the linear polyglucan is obtained by catalytic reaction of monomeric building blocks such as oligomeric saccharides, e.g. of mono- and / or disaccharides, is produced by using a so-called biocatalyst, usually an enzyme, under suitable conditions.
- biocatalyst usually an enzyme
- Linerar polygiucans from fermentations are, in the parlance of the invention, linear polygiucans which are obtained by fermentative processes using organisms which occur in nature, such as fungi, algae, bacilli, bacteria or protists, or which do not occur in nature
- Organisms but modified with the help of genetic engineering methods of general definition, modified natural organisms, such as fungi, algae, bacilli, bacteria or protists, or can be obtained with the help of fermentative processes.
- modified natural organisms such as fungi, algae, bacilli, bacteria or protists
- microorganisms are Piichia pastoris, Trichoderma Reseii, Straphylokkus Camosus, Escherichia Coli or Aspergillus Niger.
- amylosucrases are used for the production of linear water-insoluble polyglucans such as poly-1, 4- ⁇ -D-glucan by means of a biocatalytic process.
- Suitable enzymes are polysaccharide synthases, starch synthases, glycol transferases, 1, 4- ⁇ -D-glucan transferases, glycogen synthases or else
- Modified water-insoluble linear polygiucans can also be used, the polygiucans not participating in the linear linkage, for example, by esterification and / or etherification in one or more
- Positions may have been chemically modified.
- the modification can take place in the 2-, 3- and / or 6-position.
- Modification can be made water-insoluble.
- water-insoluble linear polygiucans are preferably used which have been produced in a biotechnical, in particular in a biocatalytic or a fermentative, process, with biocatalytically produced polyglucan being particularly preferred.
- the linear water-insoluble polygiucans obtained in this way have a particularly homogeneous profile of properties, e.g. B. in relation to the
- Comparatively homogeneous products can also be obtained with chemical or enzymatic branching. However, remains in many
- Biotechnical and especially biocatalytic methods have the advantage that directly water-insoluble linear polygiucans can be obtained, such as. B. the preferred poly-1, 4- ⁇ -D-glucans, which contain no branches, or whose degree of branching is below the detection limit of conventional analytical methods.
- the polygiucans can also be more resistant in the form of so-called alpha-amylase
- Polygiucans are used as they are described using the example of poly-1, 4- ⁇ -D-glucan in the not previously published German patent application with official file number 198 30 618.0 of the applicant.
- Alpha-amylase-resistant polygiucans can be prepared by preparing a suspension or dispersion of water-insoluble polyglucans and water, heating the suspension or dispersion to a temperature in the range from 50 to 100 ° C, and allowing the resulting paste-like mixture to cool to a temperature in the range from 50 ° C to the freezing point, preferably 35 to 15 ° C, 27 to 22 ° C, 16 to 0 ° C or 6 to 2 ° C, over a period of 1 to 72 h, preferably 1 to
- the polyglucan can also be used as a thermoplastic polyglucan, which is obtainable by melting linear water-insoluble polyglucan and Adding at least 20% by weight, preferably at least 30% by weight, of one
- Plasticizers such as sorbitol, glycerin, their condensation products and oligomers,
- thermoplastic polyglucans using the example of the preferred linear water-insoluble poly (1,4- ⁇ -D-glucan) is given by the unpublished German
- Gel permeation chromatography in comparison to a calibration using pullulin standard) of the linear polygiucans used according to the invention can vary within a wide range from 0.75 x 10 2 g / mol to 10 7 g / mol.
- the molecular weight M w is preferably in a range from 10 3 g / mol to 10 6 g / mol and particularly preferably from 10 3 g / mol to 10 5 g / mol.
- Another advantageous range is from 2 x 10 3 to 8 x 10 3 .
- Corresponding ranges apply to the preferred poly-1, 4-D-glucan.
- the molecular weight distribution or polydispersity M w / M n can also vary widely depending on the manufacturing process of the polyglucan. Preferred
- Values are from 1.01 to 50, especially from 1.01 to 15, with small polydispersity values being particularly preferred, e.g. from 1.01 to 2.5.
- the polydispersity increases with a bimodal distribution of the molecular weights.
- a single polyglucan in particular, can be used to produce the microparticles
- Poly-1, 4-D-glucan and very particularly poly-1, 4- ⁇ -D-glucan or mixtures of two or more representatives can be used.
- a water-insoluble branched polysaccharide preferably a polyglucan, in particular a poly-1, 4-alpha-D-glucan, or a poly-1, 3-beta-D-glucan can be added.
- a polyglucan in particular a poly-1, 4-alpha-D-glucan, or a poly-1, 3-beta-D-glucan
- Mixtures of two or more branched polysaccharides can also be added.
- the branched polysaccharides can be of any origin. In this
- Starch analogues such as glycogen. If necessary, the proportion of linear structures in the branched polysaccharides can be determined by suitable ones
- the molecular weight may also be higher for the branched polysaccharides, e.g. B. values up to preferably 10 9 g / mol and more.
- polymers in particular biocompatible or biodegradable polymers, can also be added.
- the amount of the other polymer (s) that are added without changing the spherical shape and / or other properties of the microparticles to be produced always depends on the polymer added.
- the proportion of linear water-insoluble polyglucan should be at least 70% by weight, in particular 80
- % By weight and preferably 90% by weight, based on the total content of linear water-insoluble polyglucan, including optionally branched polysaccharide and optionally further polymers.
- the microparticles consist of 100% by weight of linear water-insoluble polyglucan, in particular linear water-insoluble poly-1, 4- ⁇ -D-glucan, which has preferably been obtained biocatalytically.
- Examples of processes for producing the microparticles are the precipitation process or
- the spherical microparticles can be prepared by dissolving the water-insoluble linear polyglucan or a mixture of several of these and, if appropriate, further polymers in a solvent, for. B. DMSO,
- a precipitant e.g. B. water, preferably at a
- the process of dissolving the polygucan used as the starting material can take place at room temperature or higher temperatures.
- the concentration of linear water-insoluble polyglucan including branched polysaccharide and other polymers in the solvent can vary within wide limits as required. It is preferably in a range from 0.02 g / ml to 1.0 g / ml, in particular from 0.05 g / ml to 0.8 g / ml and particularly preferably from 0.3 g / l to 0.6 g / l.
- precipitants are water, dichloromethane, a mixture of water and dichloromethane, mixtures of water and alcohols such as methanol, ethanol, isopropanol, water and a mixture of water and dichloromethane being particularly preferred.
- the ratio of solvent to precipitant is preferably selected in a range from 1: 1000 to 1: 4 (part solvent / part precipitant), preferably 1: 100 to 1:10 and in particular 1:70 to 1.30.
- the order in which the solvent and the precipitant are brought together is irrelevant, e.g. whether the precipitant is added to the solvent or vice versa. However, it is important that rapid mixing is ensured.
- the precipitation process can be carried out relatively slowly at low temperature overnight.
- Means of payment remains liquid and does not solidify.
- the properties of the microparticles such as size, surface structure, porosity, etc., as well as the
- Suitable additives are e.g. B. surfactants such as sodium dodecyl sulfate, N-methylgluconamide, polysorbates (e.g. Tween (registered trademark)), alkyl polyglycol ethers, ethylene oxide-propylene oxide block polymers (e.g. Pluronic (registered trademark)), alkyl polyglycol ether sulfates, generally alkyl sulfates and
- surfactants such as sodium dodecyl sulfate, N-methylgluconamide, polysorbates (e.g. Tween (registered trademark)), alkyl polyglycol ethers, ethylene oxide-propylene oxide block polymers (e.g. Pluronic (registered trademark)), alkyl polyglycol ether sulfates, generally alkyl sulfates and
- Fatty acid glycol esters and sugars such as e.g. B. fructose, sucrose, glucose, water-soluble Ceiiulose or hot water-soluble poly-alpha-D-glucan such as. B. native or chemically modified starches, poly-alpha-D-glucans obtained from these starches and starch-analogous compounds.
- sugars such as e.g. B. fructose, sucrose, glucose, water-soluble Ceiiulose or hot water-soluble poly-alpha-D-glucan such as. B. native or chemically modified starches, poly-alpha-D-glucans obtained from these starches and starch-analogous compounds.
- additives are usually added to the precipitant.
- the amount used depends on the individual case and the desired particle properties, the determination of the respectively advantageous amount being familiar to the person skilled in the art.
- water-soluble cellulose derivatives are cellulose esters and cellulose ethers, their mixed forms such as e.g. Hydroxypropylmethyl celluloses, hydroxyethyl celluloses, carboxymethyl celluloses, cellulose acetates, cellulose butyrates, cellulose propionates, cellulose acetobutyrates, cellulose acetopropionates, cellulose nitrates, ethyl celluloses, benzyl celluloses,
- Methyl celluloses etc.
- the concentration of the water-soluble cellulose derivative in the precipitant is no longer critical. The upper limit inevitably results from the resulting viscosity and thus the processability of the resulting solution.
- the proportion of particularly small particles with an average diameter of 1 nm to 2 ⁇ m can be increased by adding hot water-soluble poly-alpha-D-glucan to the precipitant.
- poly-alpha-D-glucan compounds can be used for this as they have also been mentioned in connection with the linear water-insoluble polyglucan, insofar as they fulfill the feature that is soluble in hot water.
- Preferred examples are native or chemically modified starches, poly-alpha-D-glucans obtained from these starches and starch-analogous compounds.
- Starch-analogous compounds are understood to mean compounds which consist of poly-alpha-D-glucans but are of non-vegetable origin.
- glycogen or dextran An example of this is glycogen or dextran.
- the hot water-soluble poly-alpha-D-glucans can be used as a mixture of a linear and a branched portion, such as is present in starch.
- the proportion of linear poly-alpha-D-glucan should be more than 15% by weight, preferably 50 to 99.5% by weight, in particular 60 to 90% by weight and very particularly preferably 65 to 80% by weight, based on the total amount of poly-alpha-D-glucan in the precipitant.
- they can also consist of branched structures, such as those in
- Amylopectin or in glycogen are examples of Amylopectin or in glycogen.
- hot water-soluble means that the poly-alpha-D-glucans are essentially insoluble at room temperature, preferably the same scale as for the term “water-insoluble” in connection with linear polysaccharides.
- solution or “solubility” is understood in particular to also mean suspensions or the formation of suspensions as described in the
- hot water-soluble starches preferred according to the invention show virtually no solubility in water at room temperature, while the so-called cold water-soluble starches are more readily soluble under these conditions.
- the hot water-soluble starches are characterized in particular by the fact that when heated under their own pressure, e.g. in an autoclave, to a temperature in the range of about 100 to about 160 ° C, where the respective
- potato starch can be cooked at around 100 ° C until completely dissolved, while corn starch requires a temperature of around 125 ° C.
- the hot water-soluble poly-alpha-D-glucans are preferably added to the precipitant in maximum concentration, i.e. a saturated solution is prepared.
- a saturated solution is prepared.
- suitable ranges are from more than 0.001% by weight to 10% by weight, preferably from 0.01 to 2% by weight and in particular from 0.05% by weight to 0.5% by weight, based on the amount used Precipitant.
- the additives can advantageously be used as plasticizers or in addition to the plasticizers thermoplastic mixture are mixed so that a dry
- Powder mixture is present, which can then be processed into the microparticles, the microparticle formation process also being able to take place only in the final recipe, with the thermoplastic polygiucans mixed in.
- microparticles used according to the invention are distinguished by high biocompatibility.
- the nature-identical character of the water-insoluble linear polygiucans used for the preparation and of their degradation products is of particular importance.
- the percentages by weight for the composition of the oral care products relate to the total weight of the
- the oral care products according to the invention can, depending on the type and field of application, up to 90% by weight, in particular up to 70% by weight, preferably 2% by weight to 50% by weight, in particular 15% by weight to 45% by weight and particularly preferably 20% by weight to 25% by weight of microparticles, based on the total composition.
- composition of the oral care products according to the invention is explained in more detail below.
- the frame structure of a toothpaste essentially contains 15-60% by weight of cleaning material, up to 40% by weight of humectant, which should prevent drying out, and up to approx. 2% by weight of binder, which determine the viscosity and creamy consistency of the strand. up to approx. 0.2% by weight of preservative to prevent the bacterial decomposition, in particular of binders and humectants, up to approx. 2.0% by weight of surfactants, and further additives, such as sweeteners (up to approx. 0.1% by weight) to improve taste, flavoring agents (up to approx. 1% by weight). -%) and special active ingredients.
- Tooth powders differ from toothpastes primarily in that they do not contain any humectants, but their percentage of cleaning agents can be up to 90% by weight.
- cleaning bodies which can be used in addition to the microparticles according to the invention are aluminum hydroxide, calcium carbonate, calcium hydrogenphosphate dihydrate, calcium hydrogenphosphate, silicic acid, sodium aluminum silicates with, for example, zeolite structure (Na- ⁇ 2 (AI0 2 ) ⁇ 2 (Si0) ⁇ x 27 H 2 0), insoluble sodium metaphosphate (Na P0 3 ) n and hydroxylapatite.
- humectants are polyols such as glycerol, propylene glycol, sorbitol and xylitol.
- the ratio of microparticles to the oral care product according to the invention is
- examples of binders are cellulose derivatives, carageen and silicas.
- preservatives are 4-hydroxybenzoic acid ester or sodium benzoate.
- sweeteners are saccharin, sodium and calcium cyclamate, sorbitol and other sweeteners that are not cariogenic.
- flavoring agents are peppermint oil, spearmint oil, wintergreen oil, myrrh and fruit flavors, in particular for children's toothpastes.
- Special active ingredients can, for example, fluorine compounds for the
- Tooth decay prevention such as sodium fluorophosphate, alkali fluoride, zinc fluoride and
- Quartz ammonium fluoride Quartz ammonium fluoride. Active ingredients can also be used to care for the inflamed
- Gums can be added, such as azulene, allantonin and bisabolol, as well as plant extracts (chamomile, myrrh etc.)
- Strontium salts, potassium nitrates and citrates can be added to reduce sensitivity.
- the toothpaste or the tooth powder is supposed to work against colored deposits and stains on the teeth, they can contain a particularly high abrasive content.
- the toothpaste is whitened by the microparticles according to the invention itself or when required, for example if the microparticles are only added in small amounts, for example to act as a carrier for active ingredients
- the oral care product according to the invention can be a mouthwash.
- mouthwashes serve less for cleaning the teeth and the oral cavity, but rather for refreshment and
- the microparticles therefore preferably serve as a carrier material for additives such as flavorings, sweeteners and special nourishing active ingredients.
- Mouthwashes contain essentially 20: 1 to about 2: 1 of a water-ethyl
- Alcohol solution and other additives such as flavors, sweeteners, humectants and surfactants, such as have been described above, for example.
- surfactants are sodium lauryl sulfate, sodium lauroyl sarcosinate, medicinal salts, palm kernel fatty acid tauride, sodium lauryl sulfoacetate, coconut fatty acid monoglyceride sulfonate and betaines.
- the frame structure of a mouthwash usually contains from about 5% by weight to about 60% by weight of ethyl alcohol, to about 20% by weight of a humectant, to about 2.0% by weight of a dispersing aid, up to about 0.5% by weight of sweetener, up to about 0.3% by weight of flavoring agent and the rest water.
- the mouthwashes according to the invention are particularly well suited for use as a mouth spray in compressed gas packs.
- the oral care products according to the invention can be lozenges and chewing gums for oral hygiene.
- Pastilles are particularly used to impart a fresh bad breath.
- the microparticles can be used as tablet binders and also act as a carrier material for additives, such as flavors, etc.
- Chewing gums for oral care are particularly useful for quick cleaning, as long as cleaning with a toothbrush is not possible, for example on the go, and at the same time to conceal bad breath.
- the microparticles can act in particular as a cleaning agent and as a carrier material for additives, such as flavorings and other additives, as are customary in such chewing gums.
- Chewing gums usually contain homo- and copolymers, such as polyethylene ether, polyvinyl isobutyl ether, polyisobutylene, polyvinyl acetates and others.
- Denture cleaners are usually effervescent tablets and powders for dissolving in water. They usually contain surfactants, complexing agents,
- Per compounds agents for adjusting the pH value, carbon dioxide releasers and other additives, such as enzymes, which promote cleaning by splitting proteins.
- microparticles When used in denture cleaners, the microparticles can be used in particular as
- Particles are separated by decantation.
- the sediment is slurried and centrifuged (RC5C ultracentrifuge: 5 minutes at 5,000 revolutions per minute).
- the solid residue is slurried three times with bidistilled water and centrifuged.
- the solids are collected and the still moist suspension of approx. 1000 ml freeze-dried (Christ Delta 1-24 KD). 176 g of white solid are isolated (yield 88%).
- the surface of the particles is spherical in shape. The majority of the particle diameters are in the range of 2-3 ⁇ m. The specific surface is 3.75 m 2 / g (method: Sorptomatic 1990 (from Fisons Instruments)).
- DMSO dimethyl sulfoxide
- DMSO dimethyl sulfoxide
- the DMSO solution is added dropwise in 100 ml of double-distilled water with stirring and the solution is kept at 5 ° C. overnight.
- the fine milky suspension is centrifuged for 15 minutes at 3500 revolutions per minute and the supernatant is decanted off.
- the sediment is slurried with double-distilled water and centrifuged again. The process is repeated two more times. The suspension is then freeze-dried. 311 mg of white poly-1,4- ⁇ -D-glucan particles are obtained.
- Component content (% by weight)
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Epidemiology (AREA)
- Birds (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Medicinal Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Cosmetics (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Confectionery (AREA)
- Medicinal Preparation (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU18609/00A AU1860900A (en) | 1998-12-28 | 1999-11-30 | Oral hygiene product containing spherical microparticles on the basis of linear water-insoluble polyglucans |
| EP99962187A EP1139994A1 (de) | 1998-12-28 | 1999-11-30 | Mundpflegemittel, enthaltend sphärische mikropartikel auf basis linearer wasserunlöslicher polyglucane |
| JP2000590597A JP2002533374A (ja) | 1998-12-28 | 1999-11-30 | 非分岐水不溶性ポリグルカン系の球状微粒子を含む口腔衛生製品 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19860373.8 | 1998-12-28 | ||
| DE19860373A DE19860373B4 (de) | 1998-12-28 | 1998-12-28 | Mundpflegemittel und Verwendung von sphärischen Mikropartikeln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000038643A1 true WO2000038643A1 (de) | 2000-07-06 |
Family
ID=7892875
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1999/009296 Ceased WO2000038643A1 (de) | 1998-12-28 | 1999-11-30 | Mundpflegemittel, enthaltend sphärische mikropartikel auf basis linearer wasserunlöslicher polyglucane |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1139994A1 (de) |
| JP (1) | JP2002533374A (de) |
| AU (1) | AU1860900A (de) |
| DE (1) | DE19860373B4 (de) |
| WO (1) | WO2000038643A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480677A (zh) * | 2021-08-03 | 2021-10-08 | 青岛科技大学 | 一种丹皮线性α-D-1,4-葡聚糖及其制备方法和应用 |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2432527A (en) * | 2005-11-25 | 2007-05-30 | William Joseph Duffy | Improvements in oral hygiene agents |
| US20100189663A1 (en) * | 2009-01-24 | 2010-07-29 | Gallis Karl W | Mouth rinse compositions including chemically modified silica or silicate materials for sustained delivery to tooth surfaces |
| JP6075692B2 (ja) * | 2013-05-23 | 2017-02-08 | 株式会社大阪ソーダ | 光学式デジタイザー用塗料に用いる酸化チタン分散液とその製造方法 |
| CN113116747A (zh) * | 2020-01-14 | 2021-07-16 | 罗盖特公司 | 天然和多孔淀粉在牙膏中作为白色颜料 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247242A (en) * | 1990-07-26 | 1992-02-26 | Hayashibara Biochem Lab | Amylose granule and its preparation |
| WO1994001091A1 (en) * | 1992-07-03 | 1994-01-20 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Composition for controlled release of an active substance and method for the preparation of such a composition |
| GB2286530A (en) * | 1994-02-18 | 1995-08-23 | Ciba Geigy Ag | Cosmetic composition |
| US5486507A (en) * | 1994-01-14 | 1996-01-23 | Fuisz Technologies Ltd. | Porous particle aggregate and method therefor |
| DE19737481A1 (de) * | 1997-08-28 | 1999-03-04 | Hoechst Ag | Sphärische lineare Polysaccharide enthaltende Mikropartikel |
| DE19839216C1 (de) * | 1998-08-28 | 2000-01-20 | Aventis Res & Tech Gmbh & Co | Verfahren zur Herstellung von sphärischen Mikropartikeln, die ganz oder teilweise aus mindestens einem wasserunlöslichen Verzweigungen enthaltenden Polyglucan bestehen, sowie mit diesem Verfahren erhältliche Mikropartikel und die Verwendung |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4113044A1 (de) * | 1990-10-09 | 1992-05-21 | Degussa | Zahnpflegemittel |
-
1998
- 1998-12-28 DE DE19860373A patent/DE19860373B4/de not_active Expired - Fee Related
-
1999
- 1999-11-30 JP JP2000590597A patent/JP2002533374A/ja active Pending
- 1999-11-30 WO PCT/EP1999/009296 patent/WO2000038643A1/de not_active Ceased
- 1999-11-30 AU AU18609/00A patent/AU1860900A/en not_active Abandoned
- 1999-11-30 EP EP99962187A patent/EP1139994A1/de not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2247242A (en) * | 1990-07-26 | 1992-02-26 | Hayashibara Biochem Lab | Amylose granule and its preparation |
| WO1994001091A1 (en) * | 1992-07-03 | 1994-01-20 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Composition for controlled release of an active substance and method for the preparation of such a composition |
| US5486507A (en) * | 1994-01-14 | 1996-01-23 | Fuisz Technologies Ltd. | Porous particle aggregate and method therefor |
| GB2286530A (en) * | 1994-02-18 | 1995-08-23 | Ciba Geigy Ag | Cosmetic composition |
| DE19737481A1 (de) * | 1997-08-28 | 1999-03-04 | Hoechst Ag | Sphärische lineare Polysaccharide enthaltende Mikropartikel |
| WO1999011695A1 (de) * | 1997-08-28 | 1999-03-11 | Aventis Research & Technologies Gmbh & Co Kg | Sphärische lineare polysaccharide enthaltende mikropartikel |
| DE19839216C1 (de) * | 1998-08-28 | 2000-01-20 | Aventis Res & Tech Gmbh & Co | Verfahren zur Herstellung von sphärischen Mikropartikeln, die ganz oder teilweise aus mindestens einem wasserunlöslichen Verzweigungen enthaltenden Polyglucan bestehen, sowie mit diesem Verfahren erhältliche Mikropartikel und die Verwendung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113480677A (zh) * | 2021-08-03 | 2021-10-08 | 青岛科技大学 | 一种丹皮线性α-D-1,4-葡聚糖及其制备方法和应用 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19860373A1 (de) | 2000-07-06 |
| DE19860373B4 (de) | 2004-02-19 |
| JP2002533374A (ja) | 2002-10-08 |
| AU1860900A (en) | 2000-07-31 |
| EP1139994A1 (de) | 2001-10-10 |
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