[go: up one dir, main page]

WO2025056490A1 - Compositions de savon comprenant un aluminosilicate amorphe - Google Patents

Compositions de savon comprenant un aluminosilicate amorphe Download PDF

Info

Publication number
WO2025056490A1
WO2025056490A1 PCT/EP2024/075169 EP2024075169W WO2025056490A1 WO 2025056490 A1 WO2025056490 A1 WO 2025056490A1 EP 2024075169 W EP2024075169 W EP 2024075169W WO 2025056490 A1 WO2025056490 A1 WO 2025056490A1
Authority
WO
WIPO (PCT)
Prior art keywords
soap
acid
soap composition
sodium
starch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/075169
Other languages
English (en)
Inventor
Amalendu BANGAL
Sudipta Ghosh Dastidar
Chandra Sekhar GHOSH
Rajkumar PERUMAL
Janhavi Sanjay Raut
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Unilever Global IP Ltd, Unilever IP Holdings BV, Conopco Inc filed Critical Unilever Global IP Ltd
Publication of WO2025056490A1 publication Critical patent/WO2025056490A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/18—Water-insoluble compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D13/00—Making of soap or soap solutions in general; Apparatus therefor
    • C11D13/14—Shaping
    • C11D13/18—Shaping by extrusion or pressing
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/225—Polymers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/26—Organic compounds, e.g. vitamins containing oxygen

Definitions

  • the present invention relates to a soap composition. It more particularly relates to a soap composition comprising aluminosilicate that comprises high amount of water and yet exhibits sufficient hardness such that it is easy to extrude and stamp.
  • Surfactants have been used for personal wash applications for a long time.
  • products in the personal wash market e.g. body wash, face wash, hand wash, soap compositions and shampoos.
  • Products which are marketed as body wash, face wash and shampoos are generally in liquid form and are made of synthetic anionic surfactants. They are generally sold in plastic bottles/ containers.
  • Soap compositions and hand wash products generally contain soaps. Soap compositions do not need to be sold in plastic containers and are able to retain their own shape by virtue of being structured in the form of a rigid solid. Soaps bars are usually sold in cartons made of cardboard.
  • Soap compositions whether for personal wash purposes or for laundering clothes are generally prepared through one of two routes.
  • One is called the cast bar route while the other is called the milled and plodded route (also known as extrusion route).
  • the cast bar route has inherently been very amenable in preparing low TFM (total fatty matter) bars.
  • Total fatty matter is a common way of defining the quality of soap.
  • TFM is defined as the total amount of fatty matter, mostly fatty acids, that can be separated from a sample of soap after splitting with a mineral acid, usually hydrochloric acid.
  • the soap mixture is mixed with polyhydric alcohols and poured in casts and allowed to cool and then the soap compositions are removed from the casts.
  • the cast bar route enables production at relatively lower throughput rates.
  • the soap is prepared with high water content and then spray dried to reduce the moisture content and to cool the soap after which other ingredients are added and then the soap is extruded through a plodder and optionally cut and stamped to prepare the final soap composition.
  • the milled and plodded soaps generally have a high TFM in the range of 60 to 80 weight percent.
  • Milled and plodded soap compositions are also known as extruded soap compositions. They are composed of very many different types of soaps. Most soap compositions comprise both water insoluble as well as water soluble soaps. Their structure is generally characterized by a brick and mortar type structure.
  • Insoluble soaps usually consist of higher chain C16 and C18 soaps (palmitate and stearate soap). They are generally included in soap compositions to provide structuring benefits i.e they provide shape to the bars. Soap compositions also consist of water soluble soaps (which act as the mortar) which are generally unsaturated C18:1 and 18:2 sodium soap (oleate soap) in combination with short chain fatty acids (generally C8 to C12 or even up to C14 soap). Water soluble soaps generally aid in cleaning.
  • soap compositions presently prepared through the extruded route for personal wash contain about 14 to 22 wt% water.
  • the present inventors are aware of various attempts by the present applicants and others to reduce the fatty matter content.
  • These technologies include approaches to structure soap compositions, like inclusion of aluminium phosphate or in situ generation of calcium silicate. Such technologies are not very skin friendly and so are not appropriate for personal washing or for washing fabric by hand.
  • the present applicant has also included zeolite in soap compositions to increase the water content e.g. as published in W02020/169409. Although this technology enables the production of soap compositions containing 22 to 35 wt% water, the search is on to develop soap compositions that can contain higher amounts of water and yet deliver all the desired consumer benefits.
  • the present inventors with their extensive research experience in the area of aluminosilicate gels, were able to develop even better water holding soap compositions by incorporating in them, specific aluminosilicate where the SiO2/AI2C>3 mole ratio is less than 5.0.
  • the invention uses zeolite, which are microporous, three- dimensional crystalline solids of aluminium silicate.
  • Aluminosilicate gels have been incorporated in soap compositions but the gels so incorporated were not in the presently claimed SiO2/AI2C>3 mole ratio and therefore those soaps bars do not exhibit the high-water holding capacity and so are not extrudable in a conventional plodder.
  • WO2022180228 (Unilever) relates to an extruded soap bar composition. It more particularly relates to a soap bar composition which comprises specified type of sodium alumino silicate gel to produce soap bars with high water content that are not only easy to extrude but have the desired hardness.
  • the soap composition of the invention is capable of stably retaining high amount of water in the range of 15 to 45 wt% by weight of the soap composition as compared to conventional soap composition.
  • water is preferably at least 15 wt.%, further preferably at least 18 wt.%, still more preferably at least 20 wt.% furthermore preferably at least 23 wt.% but the amount of water in the soap composition is preferably not more than 45 wt.%, still preferably not more than 40 wt.%, most preferably not more than 38 wt.%.
  • the amount of water in the soap composition ranges from 15 to 45%, more preferably 18 to 40% by weight of the composition.
  • the acid when it is a dicarboxylic acid, it may be selected from the group comprising and not limited to adipic acids.
  • the acid form of pH quencher is used as a reactant in making of the soap and the salt form is present in the finished soap composition.
  • the invention therefore further relates to the use of a pH quencher acid having pKa value between 3.5 to 6.8 or corresponding salt of the acid or combination thereof, preferably in an amount of from 0.1 to 5 wt% , to enhance stabilization of the sodium alumino silicate in amorphous form, when applied in a soap composition according to the invention, i.e.. preferably in a sap composition composition comprising, a. 18 to 75 wt% of total fatty matter; b.
  • the pH quencher is selected from the group of organic acid, salts of organic acid, polyacrylic acid, salts of polyacrylic acid, dicarboxylic acid, salts of dicarboxylic acid, and mixtures thereof. More preferably, the pH quencher is selected from the group of salts of organic acid, polyacrylic acid, salts of polyacrylic acid, dicarboxylic acid, salts of dicarboxylic acid, and mixtures thereof.
  • the soap compositions of the present invention can hold high amount of moisture or water content.
  • the soap compositions of the present invention have 15 to 45 wt% of water, preferably 20 to 40 wt%, more preferably 22 to 40wt% and most preferably 25 to 40wt% of water by weight of the soap composition.
  • the soap composition generally comprises electrolyte and water.
  • Electrolytes as per this invention include compounds that substantially dissociate into ions in water. Electrolytes as per this invention are not an ionic surfactant. Suitable electrolytes for inclusion in the soap making process are alkali metal salts. Preferred electrolytes include sodium sulfate, sodium chloride, sodium citrate, potassium chloride, potassium sulfate, sodium carbonate and other mono or di or tri salts of alkaline earth metals, more preferred electrolytes are sodium chloride, sodium sulfate, potassium chloride and especially preferred electrolytes are sodium chloride and sodium sulfate and combinations thereof. For the avoidance of doubt is clarified that the electrolyte is a non-soap material.
  • the soap composition of the present invention may comprise an electrolyte in the range of 0.1 to 6 wt% of the weight of composition, more preferably 0.5 to 5 and most preferably 0.7 to 4 wt%.
  • sodium sulphate and sodium chloride are used as electrolytes for the composition of the present invention.
  • sodium sulphate is present in the range of 0.1 to 6 wt% of the weight of composition, more preferably 0.5 to 5 and most preferably 0.7 to 4 wt%. It is preferred that sodium sulphate is at least 0.1 wt%, more preferably at least 0.5wt%, and most preferably at least 0.7 wt% and it is preferred that it is not more than 6wt%, more preferably not more than 5 wt%, furthermore preferably not more than 4 wt% and most preferably not more than 3.5wt% of the total weight of composition of the present invention.
  • sodium chloride when sodium chloride is present in the range of 0.1 to 6 wt% of the weight of composition, more preferably 0.5 to 5 and most preferably 0.7 to 4 wt%. It is preferred that sodium chloride is at least 0.1 wt%, more preferably at least 0.5wt%, and most preferably at least 0.7 wt% and it is preferred that it is not more than 6wt%, more preferably not more than 5 wt%, furthermore preferably not more than 4 wt% and most preferably not more than 3.5 wt% of the total weight of composition of the present invention.
  • the organic filler is a starch and preferably the starch is a native starch, pregelatinized starch, converted starch or its mixture.
  • the organic filler in the soap composition ranges from 1 to 45 wt%, more preferably from 2 to 40 wt% and most preferably from 3 to 35wt% by weight of the soap composition.
  • the starch in the soap composition ranges from 1 to 45 wt%, more preferably from 2 to 40 wt% and most preferably from 3 to 35wt%. More preferably the composition comprises 5 to 45 wt%, even more preferably 5 to 40 wt%, even more preferably 6 to 40, even more preferably 8 to 40 wt%, even more preferably 10 to 40 wt%, even more preferably 12 to 35 wt% of starch, based on the weight of the composition.
  • Suitable starch materials include natural starch (from corn, wheat, rice, potato, tapioca and the like), pre-gelatinized starch, various physically and chemically modified starch and mixtures thereof.
  • natural starch starch which has not been subject to chemical or physical modification - also known as raw or native starch.
  • the organic filler is a starch and preferably the starch is a native starch, pregelatinized starch, converted starch or its mixture.
  • moisturizers and humectants examples include cetyl alcohol, CARBOPOL® 934, ethoxylated castor oil, paraffin oils, lanolin and its derivatives. Silicone compounds such as silicone surfactants like DC ®3225C (Dow Corning) and/or silicone emollients, silicone oil (DC-200 ® ex. Dow Corning) may also be included.
  • opacifiers compounds which limit the quantity of light passing through the solid composition.
  • the solid composition is generally opaque, i.e. "opacification".
  • opacifiers include titanium dioxide, zinc oxide and the like.
  • the composition preferably comprises a polyhydric alcohol (also called polyol) or mixture of polyols.
  • Polyol is a term used herein to designate a compound having multiple hydroxyl groups (at least two, preferably at least three) which is highly water soluble.
  • Many types of polyols are available including: relatively low molecular weight short chain polyhydroxy compounds such as glycerol and propylene glycol; sugars such as sorbitol, manitol, sucrose and glucose; modified carbohydrates such as hydrolyzed starch, dextrin and maltodextrin, and polymeric synthetic polyols such as polyalkylene glycols, for example polyoxyethylene glycol (PEG) and polyoxypropylene glycol (PPG).
  • PEG polyoxyethylene glycol
  • PPG polyoxypropylene glycol
  • Especially preferred polyols are glycerol, sorbitol and their mixtures. Most preferred polyol is glycerol.
  • the composition, e.g. bars, of the invention comprise 0 to 8%, preferably 1 to 7.5%, more preferably 1 to 6.5 and even more preferably 1 to 5.5% by wt. polyol.
  • Glycerol, if present, is preferably present in an amount of from 0 to 8%, preferably 1 to 7.5%, more preferably 1 to 6.5 and even more preferably 1 to 5.5%, and even more preferably from 1 to 5 %, by wt. based on the weight of the soap composition.
  • the total level of the adjuvant materials used in the bar composition generally is in an amount not higher than 50%, preferably 1 to 50%, more preferably 3 to 45% by wt. of the soap composition.
  • the adjuvant system may optionally include insoluble particles comprising one or a combination of materials.
  • insoluble particles is meant materials that are present in solid particulate form and suitable for personal washing.
  • the insoluble particles should not be perceived as scratchy or granular and thus should have a particle size less than 300 microns, more preferably less than 100 microns and most preferably less than 50 microns.
  • Preferred inorganic particulate material may be inorganic fillers, including but not limited to talc, clay and calcium carbonate.
  • Talc is a magnesium silicate mineral material, with a sheet silicate structure and a composition of Mg3Si4(OH)22 and may be available in the hydrated form. It has a plate-like morphology, and is essentially oleophilic/hydrophobic, i.e. , it is wetted by oil rather than water.
  • Calcium carbonate or chalk exists in three crystal forms: calcite, aragonite and vaterite.
  • the natural morphology of calcite is rhombohedral or cuboidal, acicular or dendritic for aragonite and spheroidal for vaterite.
  • Organic particulate materials include: insoluble polysaccharides such as highly crosslinked or insolubilized starch (e.g., by reaction with a hydrophobe such as Octyl succinate) and cellulose; synthetic polymers such as various polymer lattices and suspension polymers; insoluble soaps and mixtures thereof. It may be preferred, that the composition is free from insoluble polysaccharides, e.g. is free from insoluble starch.
  • the composition of the invention may alternatively be free from soluble organic polymers other than starch and surfactant, e.g. it may be preferred that it is free from carboxymethyl cellulose.
  • composition of the invention is free from polymers of the acrylate class, e.g. from polyacrylates.
  • Bar compositions preferably comprise 0.1 to 25% by wt. of bar composition, preferably 5 to 15 by wt. of these mineral or organic particles.
  • An opacifier may be optionally present in the personal care composition.
  • the cleansing bar is generally opaque.
  • examples of opacifiers include titanium dioxide, zinc oxide and the like.
  • a particularly preferred opacifier that can be employed when an opaque soap composition is desired is ethylene glycol mono- or di-stearate, for example in the form of a 20% solution in sodium lauryl ether sulphate.
  • An alternative opacifying agent is zinc stearate.
  • Preferred metals are silver, copper, zinc, gold or aluminium. Silver is particularly preferred. In the ionic form it may exist as a salt or any compound in any applicable oxidation state. Preferred silver compounds are silver oxide, silver nitrate, silver acetate, silver sulfate, silver benzoate, silver salicylate, silver carbonate, silver citrate or silver phosphate, with silver oxide, silver sulfate and silver citrate being of particular interest in one or more embodiments. In at least one preferred embodiment the silver compound is silver oxide. Oligodynamic metal or a compound thereof is preferably included in 0.0001 to 2%, preferably 0.001 to 1% by weight of the composition. Alternately an essential oil antimicrobial active may be included in the composition of the invention.
  • Preferred essential oil actives which may be included are terpineol, thymol, carvacol, (E) -2(prop-1-enyl) phenol, 2- propylphenol, 4- pentylphenol, 4-sec-butylphenol, 2-benzyl phenol, eugenol or combinations thereof. Furthermore, preferred essential oil actives are terpineol, thymol, carvacrol or thymol, most preferred being terpineol or thymol and ideally a combination of the two. Essential oil actives are preferably included in 0.001 to 1%, preferably 0.01 to 0.5% by weight of the composition.
  • Laundry bars generally include chelating agents that are generally not included in soap compositions for personal cleansing.
  • Chelating agents may be selected from but not limited to ethylene diamine tetra acetic acid (EDTA), ethylene hydroxy diphosphonic acid (EH DP) or mixtures thereof.
  • the chelating agent is preferably present in an amount ranging from 0.01 wt.% to 1 wt.%.
  • Non-phosphate chelating agents like methylglycinediacetic acid and salts thereof are also preferred.
  • the present invention relates to the present invention relates to process comprising the steps of: a. saponifying a fatty matter with an alkali to produce a saponified mass; b. adding sodium aluminate, sodium silicate, and an acid having pKa value between 3.5 to 6.8 and mixing or corresponding salt of the acid or combination thereof; and c. adding 1 to 45wt% organic fillers to step (b) by weight of the resulting soap composition to obtain a mixture; and d. extruding the mixture of step (c) to obtain a desired soap composition according to the first aspect; wherein water is added at any of the steps (a), (b) or (c).
  • the soap composition may be made into a bar by a press that first involves saponification of the fat charge with alkali followed by extruding the mixture in a conventional plodder.
  • the plodded mass may then be optionally cut to a desired size and stamped with a desirable indicia.
  • An especially important benefit of the present invention is that, notwithstanding the high amount of water content of the soap composition, compositions thus prepared by extrusion are found to be easy to stamp with a desirable indicia.
  • “easy to extrude” is meant that the hardness of the bar as it is extruded is high enough that it exits the extruder in a firm enough form that it can be called a rigid bar.
  • the hardness of the bar is preferably higher than 1.2 kg, more preferably in the range of 1.2 to 5.0 kg (at 40°C).
  • the hardness is preferably measured using the TA-XT Express apparatus available from Stable Micro Systems. The hardness is measured using this apparatus with a 30° conical probe - Part #P/30c to a penetration of 15 mm. If the soap mass is too soft and is passed through the extruder it will not extrude out of the extruder in a cohesive enough mass to be called a bar.
  • Easy to stamp is meant that the soap composition is of such a consistency and low enough stickiness that it does not stick to the die that is used to stamp any desired indicia on the bar.
  • the soap composition prepared by the process of the invention therefore preferably comprises an indicium stamped thereupon.
  • the process to prepare the soap composition of the present invention comprises the steps of (a) preparing soap in a plough shear mixer or crutcher by reacting desired amount of fatty acid/ oil with alkali at 90 to 110°C; (b) including sodium aluminosilicate in the plough shear mixer or crutcher to mix with the soap so formed in step (a) to prepare a mixture; (c) providing a pH quencher having pKa value between 4 to 6.8; (d) spray drying the mixture or passing it through a triple roll mill; and (e) then passing it though a plodder to prepare the desired soap composition.
  • the process to prepare the soap composition of the present invention comprises the steps of (a) preparing the sodium alumino silicate is in situ in a plough shear mixer or crutcher by reacting the desired amount of sodium aluminate with sodium silicate; followed by (b) preparing soap in the same plough shear mixer or crutcher by reacting desired amount of fatty acid/ oil with alkali at 90 to 110°C with constant agitation to prepare a mixture; (c) providing a pH quencher having pKa value between 3.5 to 6.8 or corresponding salt of the acid or combination thereof; (d) spray drying the mixture or passing it through a triple roll mill; and (e) then passing it though a plodder to prepare the desired soap composition.
  • the sodium aluminosilicate is in the range of 1.0 to 15 wt%, more preferably in the range of 1.5 to 10wt% of the weight of soap composition.
  • the soap composition comprises 15 to 45 wt% water by weight of the soap composition.
  • the organic filler is present in the range of 1 to 45wt% by weight of the soap composition.
  • the electrolyte is selected from sodium chloride, sodium sulphate, sodium citrate or a mixture thereof.
  • sodium aluminosilicate is formed in situ.
  • the soap compositions for the examples were prepared in accordance with the present invention.
  • a 35kg soap was prepared in plough shear mixer. Then the mass was converted into the form of noodle, extruding through plodder.
  • the fatty acids were melted at 65-70°C in a fat melting tank; plough shear was heated and maintained at 80°C by jacket oil heater; the mixer was switched on and the plough and chopper were kept in the rotating stage; the required amount of melted fatty acids and -48% caustic acid solution were poured from two different tank into the mixer in 3:1 weight ratio.
  • the electrolytes were then added (e.g., NaCI, Na2SO4) in the form of solution.
  • the soap bars were prepared in accordance with the soap compositions of the present invention.
  • the hardness of the soap bars was measured by a TAXT meter and simultaneously the billet temperature was taken by inserting a temperature probe into it. The billets were then stamped in a pneumatic stamper and the bars were taken out from the stamper cavity. The hardness of the samples was measured using the protocol given below.
  • a hardness value of at least 1.2 kg (measured at 40°C), preferably at least 2.7 kg is acceptable.
  • the data of table 1 gives examples of soap bars E4 to E6 prepared according to the present invention.
  • E1 is a high TFM control soap bar with low moisture content.
  • E2 is a control without sodium aluminosilicate but having starch. It is observed that in E2, in the absence of sodium aluminosilicate, the inventors were not able to increase the moisture content of the soap bars beyond 16% to obtain stampable soap bars.
  • E3 control sample when the salt of pH quencher was absent, it was observed that soap composition was not hard enough to be processed.
  • the soap bars E4 to E6 when prepared according to the present invention could be formulated with high moisture content such as 23 wt% by weight of the soap composition. It was unexpected finding of the inventors that bars as low as 30TFM could be prepared having good hardness with the compositions according to the present invention.
  • the sodium alumino silicate was generate in situ, and compared with the commercially available Zeolite 4A for soap bars made according to Example 1.
  • a comparison was made to check the performance difference of the soap bars made from the composition of the present invention, E7 and that made with commercially available Zeolite 4A (Metro Chem Industries) E8 and E9.
  • the solid-state structure of the material in the soap bar matrix was confirmed by XRD study using (Ultima IV) XRD instrument.
  • the XRD data showed no peaks sharp peak for compositions E7 and clear crystalline peaks for composition E8 and E9, thereby confirming that the aluminosilicate is amorphous form, whereas the Zeolite 4A is known to be a crystalline form.
  • the probe After the run is performed, the probe returns to its original position.
  • the output from this test is the readout of the TA-XT as “force” (RT) in g or kg at the target penetration distance, combined with the sample temperature measurement. (In the subject invention, the force is measured in Kg at 40°C at 15 mm distance)
  • the force reading can be converted to extensional stress, according to the equation given below.
  • extension rate (s -1 )
  • the hardness (yield stress) of skin cleansing bar formulations is temperature-sensitive.
  • the reading at the target distance (RT) should be corrected to a standard reference temperature (normally 40°C), according to the following equation:
  • the correction can be applied to the extensional stress.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

La présente invention se rapporte à une composition de savon extrudé. Elle se rapporte plus particulièrement à une composition de savon qui comprend un type spécifié d'aluminosilicate de sodium et une charge organique pour produire des compositions de savon ayant une teneur élevée en eau qui sont non seulement faciles à extruder mais ont la dureté souhaitée.
PCT/EP2024/075169 2023-09-11 2024-09-10 Compositions de savon comprenant un aluminosilicate amorphe Pending WO2025056490A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP23196552.6 2023-09-11
EP23196552 2023-09-11

Publications (1)

Publication Number Publication Date
WO2025056490A1 true WO2025056490A1 (fr) 2025-03-20

Family

ID=88017961

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/075169 Pending WO2025056490A1 (fr) 2023-09-11 2024-09-10 Compositions de savon comprenant un aluminosilicate amorphe

Country Status (1)

Country Link
WO (1) WO2025056490A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438169A (en) * 1945-07-12 1948-03-23 Allied Chem & Dye Corp Manufacture of detergents
US2677665A (en) * 1949-07-19 1954-05-04 Lever Brothers Ltd Manufacture of soap bars or tablets
US2798053A (en) 1952-09-03 1957-07-02 Goodrich Co B F Carboxylic polymers
WO2011080101A1 (fr) * 2009-12-29 2011-07-07 Unilever Plc Savonnettes extrudées à faible teneur en tmf, peu sujette à fissuration
WO2020169409A1 (fr) 2019-02-19 2020-08-27 Unilever N.V. Pain de savon extrudé à haute teneur en eau
WO2022122874A1 (fr) * 2020-12-10 2022-06-16 Unilever Ip Holdings B.V. Composition de pain de savon de blanchisserie
WO2022180228A1 (fr) 2021-02-26 2022-09-01 Unilever Ip Holdings B.V. Pain de savon

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438169A (en) * 1945-07-12 1948-03-23 Allied Chem & Dye Corp Manufacture of detergents
US2677665A (en) * 1949-07-19 1954-05-04 Lever Brothers Ltd Manufacture of soap bars or tablets
US2798053A (en) 1952-09-03 1957-07-02 Goodrich Co B F Carboxylic polymers
WO2011080101A1 (fr) * 2009-12-29 2011-07-07 Unilever Plc Savonnettes extrudées à faible teneur en tmf, peu sujette à fissuration
WO2020169409A1 (fr) 2019-02-19 2020-08-27 Unilever N.V. Pain de savon extrudé à haute teneur en eau
WO2022122874A1 (fr) * 2020-12-10 2022-06-16 Unilever Ip Holdings B.V. Composition de pain de savon de blanchisserie
WO2022180228A1 (fr) 2021-02-26 2022-09-01 Unilever Ip Holdings B.V. Pain de savon

Similar Documents

Publication Publication Date Title
EP3927805B1 (fr) Barre de savon extrudée à haute teneur en eau
EP4298194B1 (fr) Pain de savon
EP3927803B1 (fr) Barre de savon extrudée à haute teneur en eau
WO2022122878A1 (fr) Composition de pain de savon pour lessive
EP4352193B1 (fr) Pains de savon en gel de silice à haute humidité et leur procédé de préparation
WO2001042419A1 (fr) Composition amelioree de detergent en pain et procede de production
WO2025056490A1 (fr) Compositions de savon comprenant un aluminosilicate amorphe
WO2025056491A1 (fr) Composition et procédé de préparation d'une composition de savon à haute teneur en humidité comprenant un aluminosilicate de sodium amorphe
US11788035B2 (en) Soap bar with high water content
WO2025056296A1 (fr) Pains de savon comprenant du savon de potassium
EP4256021B1 (fr) Composition de savon comprenant un hydrogel
WO2025056484A1 (fr) Pains de savon comprenant une teneur élevée en savon soluble
WO2025056485A1 (fr) Pains de savon de silice polymère à haute teneur en humidité de faible tfm
WO2025056483A1 (fr) Composition de pain de savon coloré comprenant de l'amidon
CN117460811A (zh) 高水分硅胶皂条及其制备方法
WO2025186140A1 (fr) Barre de savon coulée et coulée à faible tfm

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 24766052

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)