WO2024183870A1 - Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung - Google Patents
Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung Download PDFInfo
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- WO2024183870A1 WO2024183870A1 PCT/EP2023/055442 EP2023055442W WO2024183870A1 WO 2024183870 A1 WO2024183870 A1 WO 2024183870A1 EP 2023055442 W EP2023055442 W EP 2023055442W WO 2024183870 A1 WO2024183870 A1 WO 2024183870A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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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
- A61K8/04—Dispersions; Emulsions
- A61K8/06—Emulsions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/02—Preparations for cleaning the hair
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
Definitions
- the invention relates to storage-stable, aqueous polyorganosiloxane emulsions made from higher-viscosity polyorganosiloxanes which contain alkyl polyglycosides as emulsifiers and have a large particle size, as well as processes for producing these emulsions.
- Polyorganosiloxanes have a wide range of uses.
- the terms "polyorganosiloxane” and "silicone” are used synonymously in the present invention.
- organosilicon compounds are in diluted form.
- organic solvents such as benzene or chlorinated hydrocarbons for this purpose is possible, but disadvantageous from an ecological and occupational health perspective. Therefore, they are usually used in the form of aqueous emulsions or dispersions, usually as oil-in-water emulsions that can be diluted with water.
- the oil phase is understood to be the water-immiscible, organosilicon compounds, optionally dissolved in organic solvents.
- Emulsions that contain polyorganosiloxanes and other organosilicon compounds and processes for their production have long been known from the state of the art and are described, for example, in the textbook W. Noll, Chemistry and Technology of Silicones, 1968, pp. 428-431, Verlag Chemie Weinheim.
- Emulsifiers for polyorganosiloxane emulsions are typically ethoxylated, synthetic alcohols, ethoxylated fatty alcohols, ethoxylated triglycerides, ethoxylated WA12245-S/We 2 fatty acids and mixtures thereof are used (for example in EP 200916 B1, EP0463431 A2 and DE 19620405 B4).
- Emulsifiers based on polyethylene glycol ethers and esters are undesirable, particularly in cosmetic applications, due to potential skin irritation (for example in US2007178144 AA (corresponding to EP1813251 A2)).
- Alkyl polyglycosides are emulsifiers that are made from renewable raw materials and do not contain polyethylene glycol groups.
- silicone oils e.g. polydimethylsiloxanes
- alkyl polyglycosides for example in US5133897 A (corresponding to EP0418479 A1)).
- silicone oils are emulsified with up to 2000 mPa ⁇ s, with at least 11 parts of emulsifier being used per 100 parts of polyorganosiloxane in order to produce stable emulsions. If silicone defoamers, e.g. mixtures of silicone oil and highly dispersed silica, are to be emulsified, higher surfactant contents are required and the emulsion must also be stabilized with thickeners or alcohols (see EP0769548 A1 and EP0774503 A1).
- EP0769548 A1 at least 5 parts, preferably at least 28 parts of emulsifier, based on the silicone oil, are used.
- EP0774503 A1 at least 5 parts, preferably at least 10 parts, of emulsifier are also used, based on the polyorganosiloxane.
- 25 parts or 50 parts of emulsifier are used per 100 parts of silicone oil/SiO 2 .
- WA12245-S/We 3 However, high proportions of emulsifiers are economically disadvantageous, particularly for cost reasons.
- DE102014212725 A1 describes a process for the production of particularly fine-particle emulsions based on highly viscous silicone oils and alkyl polyglycosides.
- the object was therefore to provide emulsions based on highly viscous silicone oils and a process for producing these polyorganosiloxane emulsions which contain emulsifiers based on renewable raw materials and have excellent stability even with very low emulsifier contents and large particle sizes. This object is achieved by the present invention.
- the invention relates to a process for producing storage-stable, aqueous polyorganosiloxane emulsions comprising (A) at least one polyorganosiloxane of the general formula R 2 a(R 1 O)bSiO(4-ab)/2 (I), WA12245-S/We 4 where R 1 can be the same or different and is a hydrogen atom or a monovalent, substituted or unsubstituted hydrocarbon radical, R 2 can be the same or different and is a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 30 carbon atoms or a hydrogen atom, a is 0, 1, 2 or 3, b is 0, 1, 2 or 3, with the proviso that the sum a+b is ⁇ 3, (B) at least one alkyl polyglycoside of the general formula where A is a linear or branched, saturated or unsaturated alkyl radical having 8 to 24 C atoms, G is a glycoside radical and m is the degree of glyco
- the invention further relates to storage-stable, aqueous polyorganosiloxane emulsions comprising (A) at least one polyorganosiloxane of the general formula R 2 a(R 1 O)bSiO(4-ab)/2 (I), where R 1 can be the same or different and is a hydrogen atom or a monovalent, substituted or unsubstituted hydrocarbon radical, R 2 can be the same or different and is a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 30 carbon atoms or a hydrogen atom, WA12245-S/We 6 a is 0, 1, 2 or 3, b is 0, 1, 2 or 3, with the proviso that the sum a+b is ⁇ 3, (B) at least one alkyl polyglycoside of the general formula where A is a linear or branched, saturated or unsaturated alkyl radical having 8 to 24 C atoms, G is a glycoside radical and m is the degree of glycosidation
- Polydimethylsiloxanes with a viscosity of 10,000 mPa ⁇ s to 3,000,000 mPa ⁇ s are preferably used as polyorganosiloxanes (A).
- Alkyl polyglycosides (B) with a saturated alkyl radical with an average of 8 to 14 carbon atoms and an average degree of glycosidation m of 1.1 to 3.0 are preferably used.
- emulsifiers (D) are not included.
- WA12245-S/We 8 Preferably, 0.1 to 1 part(s) of xanthan gum per 100 parts of polyorganosiloxane (A) are used as thickeners (E).
- the instability index of the polyorganosiloxane emulsions, after centrifugation for 8 hours at 2300xg, is preferably ⁇ 0.1.
- the polyorganosiloxane emulsions have a particle size D(50) of 3 ⁇ m to 20 ⁇ m.
- the polyorganosiloxane emulsions preferably have an octamethylcyclotetrasiloxane (D4) content of less than 0.1% by weight, based on the total weight of the polyorganosiloxane emulsion.
- D4 octamethylcyclotetrasiloxane
- the polyorganosiloxane emulsions according to the invention and the process according to the invention for their preparation are described in more detail below:
- the components (A) to (F) used in the process according to the invention can each be one type of such a component or a mixture of at least two types of a respective component.
- Polyorganosiloxanes (A) The polyorganosiloxanes (A) of the general formula (I) used in the emulsions according to the invention are preferably liquid at 25°C and preferably have viscosities, measured at 25°C according to DIN ISO 53019, of 10 to 50,000,000 mPa ⁇ s and particularly preferably of 10,000 to 3,000,000 mPa ⁇ s.
- the polyorganosiloxanes (A) are preferably those containing 5 to 10,000 units of the formula (I), particularly preferably those consisting of units of the formula (I) with an average value of a of 1.9 to 2.3 and an average value of b of 0 to 0.2.
- R 1 can be the same or different and denotes a hydrogen atom or a monovalent, substituted or unsubstituted hydrocarbon radical, preferably a hydrogen atom or a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 4 carbon atoms and particularly preferably a hydrogen atom.
- R 2 can be the same or different and denotes a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 30 carbon atoms or a hydrogen atom.
- a maximum of one R 2 radical has the meaning of a hydrogen atom.
- the R 2 radical is preferably a hydrogen atom or a monovalent, substituted or unsubstituted hydrocarbon radical having 1 to 18 carbon atoms, particularly preferably a hydrogen atom or the methyl or phenyl radical.
- 80 mol% or more of the radicals R 2 in the polyorganosiloxane (A) are methyl radicals and 20 mol% or less are aminopropyl or aminoethylaminopropyl radicals.
- Non-exhaustive examples of hydrocarbon radicals R 1 or R 2 are alkyl radicals such as the methyl, ethyl, n-propyl, iso-propyl, 1-n-butyl, 2-n-butyl, iso-butyl, tert-butyl, n-pentyl, iso-pentyl, neo-pentyl, tert-pentyl radical, hexyl radicals such as the n-hexyl radical, heptyl radicals such as the n-heptyl radical, octyl radicals such as the n-octyl radical and iso-octyl radicals such as the 2,2,4-trimethylpentyl radical, nonyl radicals such as the n-nonyl radical, decyl radicals such as the n-decyl radical, dodecyl radicals such as the n-dodecyl radical,
- Non-exhaustive examples of substituted radicals R 1 or R 2 are hydrocarbon radicals substituted with halogen, cyano, glycidoxy, polyalkylene glycol or amino groups, such as trifluoropropyl, cyanoethyl, glycidoxypropyl, polyalkylene glycolpropyl and hydrocarbon radicals bearing amino groups.
- R 2 radicals substituted with amino groups are: H 2 N(CH 2 ) 2 NH(CH 2 ) 3 - H2N(CH2)2- H 3 CNH(CH 2 ) 3 - H 2 N(CH 2 ) 4 - H2N(CH2)5- H(NHCH2CH2)3- C 4 H 9 NH(CH 2 ) 2 NH(CH 2 ) 2 - and cyclo-C6H11NH(CH2)3- , with H 2 N(CH 2 ) 3 - and H 2 N(CH 2 ) 2 NH(CH 2 ) 3 - being particularly preferred.
- the sum a+b is ⁇ 3 and has a value of preferably on average 1.5 to 2.4, particularly preferably on average 1.9 to 2.3 and very particularly preferably on average 1.95 to 2.05.
- Non-exhaustive examples of the polyorganosiloxanes (A) used in the emulsions according to the invention are aminopropyldimethylsiloxy, aminoethylaminopropyldimethylsiloxy, WA12245-S/We 11 Polydiorganosiloxanes terminated by vinyldimethylsiloxy, trimethylsiloxy, dimethylalkoxysiloxy groups or dimethylhydroxy groups, in particular polydimethylsiloxanes which contain pendant aminopropyl, aminoethylaminopropyl or carboxyalkyl groups.
- Preferred polyorganosiloxanes (A) are those of the formula R 2 3-c (R 1 O) c SiO(R 2 SiO) p Si(OR 1 ) c R 2 3-c (III), where R 1 and R 2 have the meaning given above, c is 0, 1 or 2, preferably 0 or 1, and p is 1 to 100,000, preferably 5 to 10,000.
- Non-exhaustive examples of the preferred polyorganosiloxanes (A) used in the process according to the invention are: (CH3)3Si-O-[Si(CH3)2-O-]n-Si(CH3)3 HO(CH3)2Si-O-[Si(CH3)2-O-]n-Si(CH3)2OH (CH 3 ) 3 Si-O-[Si(CH 3 ) 2 -O-] n -[Si(CH 3 )RO-] m -Si(CH 3 ) 3 HO(CH3)2Si-O-[Si(CH3)2-O-]n-[Si(CH3)RO-]m -Si(CH3)2OH CH3O(CH3)2Si-O-[Si(CH3)2-O-]n-[Si(CH3)RO-]m -Si(CH3)2OCH3 C 2 H 5 O(CH 3 ) 2 Si-O-[Si(CH 3 ) 2 -O-]
- a reactive polyorganosiloxane for example with vinyl or OH end groups, is preferably used as the polyorganosiloxane (A), then, for example, a WA12245-S/We 12 chain extension, polycondensation or, in the presence of suitable reaction partners, crosslinking.
- Such reactions are known to the person skilled in the art and result in the emulsions produced according to the invention containing polyorganosiloxanes with viscosities greater than 1,000,000 mPa ⁇ s (determined at 25°C according to DIN 53019) or crosslinked polyorganosiloxane elastomers.
- the polyorganosiloxanes (A) used in the emulsions according to the invention are preferably produced using processes known from the literature.
- Alkyl polyglycosides (B) are compounds of the general formula (II), where A has the meaning given above, G is a hexose or pentose unit or mixtures thereof and m has the meaning given above.
- A has the meaning given above
- G is a hexose or pentose unit or mixtures thereof
- m has the meaning given above.
- the alkyl polyglycosides (B) can be characterized by 1 H-NMR spectroscopy, for example on a Bruker Avance 500 MHz NMR spectrometer, where the average chain length of the alkyl radical A or the average degree of glycosidation m can be determined by integrating the areas under the 1 H-NMR signals, as is known to the person skilled in the art and as described, for example, in the textbook H. Fribolin, Ein- und bathdimensionale NMR-Spektroskopie, 5. Auflage, 2013, p. 35, Wiley-VHC-Verlag WA12245-S/We 13 and how it is processed, for example, according to the operating instructions for the NMR data analysis software Bruker Topspin 3.2.
- alkyl polyglycosides (B) with a saturated alkyl radical with an average of 8-14 carbon atoms and an average degree of glycosidation of 1.1 to 3.0.
- alkyl polyglycosides (B) based on fatty alcohols with 8-10 carbon atoms and an average degree of glycosidation of 1.4 to 2.0.
- Non-exhaustive examples of alkyl polyglycosides (B) are D-glucopyranose, oligomers, decyloctyl glycosides available under the trade name Disponil ® APG 215 from BASF SE or under the trade name TRITON ® CG 110 from Stockmeier GmbH, D-glucopyranose, oligomers, C10-16 alkyl glycosides available under the trade name Glucopon ® 650 EC and Glucopon ® GD 70 from BASF SE.
- Water (C) All types of water that have previously been used to produce polyorganosiloxane emulsions can be used as water (C).
- Water (C) used according to the invention preferably has a conductivity of less than 50 ⁇ S/cm, particularly WA12245-S/We 14 preferably less than 10 ⁇ S/cm, in particular less than 1.3 ⁇ S/cm, in each case at 25°C and 1,010 hPa.
- Water (C) is used in amounts of preferably 10 to 1,000 parts by weight, particularly preferably 40 to 500 parts by weight, based on 100 parts by weight of polyorganosiloxane (A).
- the polyorganosiloxane emulsions according to the invention can optionally contain further emulsifiers (D). All non-ionic, anionic or cationic emulsifiers known to the person skilled in the art can be used here. Emulsifiers based on renewable raw materials are preferred.
- the further emulsifiers (D) are preferably commercially available emulsifiers.
- Non-exhaustive examples of substance classes of further emulsifiers (D) are sorbitan esters, glycerol esters, polyglycerol esters, alkyl sulfates and alkyl phosphates.
- the further emulsifiers (D) used optionally according to the invention can preferably be used in pure form or as a solution of one or more emulsifiers in water or organic solvents.
- Thickeners (E) The emulsions according to the invention can optionally contain thickeners as component (E), these are preferably cellulose ethers and polysaccharides, such as xanthan gum, particularly preferably xanthan gum. WA12245-S/We 15 If thickeners (E) are used, the amounts are preferably 0.01 to 2 parts based on 100 parts of polyorganosiloxane (A).
- additives (F) In addition to components (A) to (E), other additives (F) that are usually added to silicone emulsions can optionally be used.
- other additives (F) are other siloxanes that are different from the polyorganosiloxanes (A), such as polyethersiloxanes or silanes, in particular alkoxysilanes, fillers, additives such as preservatives, disinfectants, wetting agents, corrosion inhibitors, dyes and fragrances, and mixtures thereof. If further siloxanes other than the polyorganosiloxanes (A) are used, they are preferably used in amounts of 0.1 to 1 part based on 100 parts of polyorganosiloxane (A).
- silanes are used, they are preferably used in amounts of 0.1 to 50 parts based on 100 parts of polyorganosiloxane (A).
- additives that can be used according to the invention are preservatives, dyes or fragrances known to those skilled in the art, in particular preservatives such as methylisothiazolinone, chloromethylisothiazolinone, benzylisothiazolinone, phenoxyethanol, methylparaben, ethylparaben, propylparaben, butylparaben, isobutylparaben, alkali benzoates, benzoic acid, alkali sorbates, sorbic acid, iodopropinyl butylcarbamate, benzyl alcohol and 2-bromo-2-nitropropane-1,3-diol.
- additives are used, they are preferably used in amounts of 0.0005 to 2 parts based on 100 parts.
- additives (F) in particular preservatives, are preferably used.
- the emulsions according to the invention have particle sizes (median value of the volume distribution) of 1 ⁇ m to 50 ⁇ m, in particular particle sizes of 3 ⁇ m to 20 ⁇ m, whereby these details refer to the D(50) value of the volume distribution measured according to the principle of Fraunhofer diffraction (according to ISO 13320).
- a spherical model is assumed as the parameter for the measurement with a refractive index of the continuous phase of 1.33, a refractive index of the disperse phase of 1.39 and an absorption of 0.01.
- the emulsions produced according to the invention preferably have a content of non-volatile components measured according to DIN EN ISO 3251 of preferably 1 to 80% by weight, particularly preferably 50 to 70% by weight.
- the pH of the emulsions produced according to the invention is preferably 3 to 10, particularly preferably 3 to 8.
- Storage-stable emulsions are those emulsions in which no visible separation into two phases occurs after 30 days of storage at 50°C, preferably in a drying cabinet.
- the polyorganosiloxane emulsions according to the invention can preferably be produced batchwise or continuously, e.g. according to US2018193808 (equivalent to EP3349888 B1).
- U the speed (in revolutions per second)
- dR the diameter of the dispersing tool
- peripheral speeds v are to be selected which are a maximum of 4.5 m/s, preferably a maximum of 3 m/s, particularly preferably a maximum of 2 m/s and very particularly preferably a maximum of 1 m/s.
- the process according to the invention is preferably carried out at a pressure of the surrounding atmosphere, i.e. at about 1,010 hPa.
- the process according to the invention is preferably carried out at temperatures of 0 to 80°C, preferably 2 to 50°C and particularly preferably 5 to 30°C.
- the process according to the invention is preferably carried out at room temperature, i.e. around 25°C or a temperature that is reached when the components are combined at room temperature without additional heating or cooling.
- Another subject of the present invention is the use of the polyorganosiloxane emulsions produced by the process according to the invention in cosmetic compositions such as, for example, body or hair care products.
- the emulsions produced according to the invention can in principle be used for all other purposes for which emulsions with polyorganosiloxanes have previously been used, such as, for example, as release agents, lubricants, hydrophobic agents.
- WA12245-S/We 18 and for textile impregnation in the processing of rubber and plastics or in metal processing and as a hydrophobic agent for glass and mineral building materials.
- the process according to the invention has the advantage that, despite very low proportions of emulsifier and the effect of low shear forces, very storage-stable and high-performance emulsions with average particle sizes of 1 ⁇ m to 50 ⁇ m, in particular 3 ⁇ m to 20 ⁇ m (D(50) value of the volume distribution) can be obtained.
- the process according to the invention is energetically favorable and thus economically and ecologically advantageous.
- the large particle sizes of the polyorganosiloxane emulsions according to the invention accessible via the process according to the invention also offer particular application advantages in cosmetic hair care products.
- the use of alkyl polyglycosides (B) as emulsifiers based on renewable raw materials is resource-saving.
- polysaccharide-based emulsifiers in cosmetic applications can minimize potential skin irritations and intolerances caused by conventional emulsifiers based on polyethylene glycol ethers and esters.
- the polyorganosiloxane emulsions according to the invention also have excellent application properties, such as, for example, a good conditioning effect in hair care products, ie a significant reduction in wet and dry combing force, as well as a good effect as a release agent and lubricant, and good wetting ability on different substrates. Examples
- the subject matter of the present invention is to be explained by the following examples, without, however, restricting these to the contents disclosed therein.
- WA12245-S/We 19 In the following examples, all parts and percentages are by weight unless otherwise stated. Unless otherwise stated, the following examples are carried out at a pressure of the ambient atmosphere, i.e. at about 1,010 hPa, and at room temperature, i.e. about 25°C or a temperature that occurs when the components are combined at room temperature without additional heating or cooling. All viscosity data given in the examples refer to a temperature of 25°C.
- the particle size measurement of the polyorganosiloxane emulsions according to the invention is carried out using a Malvern Mastersizer 2000 (Malvern Instruments GmbH D-Herrenberg; measuring principle: Fraunhofer diffraction in accordance with ISO 13320).
- a spherical model is assumed as the parameter for the measurement with a refractive index of the continuous phase of 1.33, a refractive index of the disperse phase of 1.39 and an absorption of 0.01.
- the measured value is D(50), the median value of the volume distribution.
- 20 g of polyorganosiloxane emulsion are mixed with 30 g of acetone, which causes the emulsion to separate.
- the acetone-water phase is separated and the process is repeated once more.
- the polymer is then washed three times with water and dried at 110°C with stirring until no more water droplets are visible, and then post-treated for a further 8 hours at 110°C in a drying cabinet.
- the viscosities of the polyorganosiloxane emulsions and the separated oil for determining the oil viscosity are determined according to DIN 53019 using a MCR 302 rheometer from Anton Paar GmbH Graz at 25°C.
- the cone plate system CP-50-2 is used and a flow curve with shear rates in the range of 0.1 to 100/s is measured. In the examples, the viscosity is given at 10/s.
- WA12245-S/We 20 To determine the content of octamethylcyclotetrasiloxane (D4), 0.5 g of the sample is mixed with 10 ml of the purest acetone containing 120 ppm n-dodecane as an internal standard.
- the emulsions are centrifuged for 8 hours at 4,000 rpm (corresponds to approx. 2,300xg) using a LUMiFuge ® 110.2-69 (LUM GmbH Berlin) and cuvettes with layer thicknesses of 2 mm.
- the stability is characterized by the instability index output by the device's software.
- the wet combing force is determined along the measuring section on untreated hair tresses.
- the hair tresses are then treated with a cosmetic composition according to the invention and the force absorbed during the combing process is determined.
- the measured value is the reduction in combing force along the measuring distance (work) that results between the treated and untreated hair weft.
- WA12245-S/We 21 the average value is calculated from five hair tresses.
- the combing force reduction is given in percent.
- Raw materials used Polyorganosiloxane A1 A polydimethylsiloxane terminated with trimethylsiloxy groups with a viscosity of 60,000 mPa ⁇ s
- Polyorganosiloxane A2 Mixture of polydimethylsiloxanes terminated with trimethylsiloxy groups with a viscosity of 300,000 mPa ⁇ s and 1,000 mPa ⁇ s, the mixture has a viscosity of 60,000 mPa ⁇ s.
- Polyorganosiloxane A3 A polydimethylsiloxane terminated with hydroxyl groups and having a viscosity of 80,000 mPa ⁇ s
- Polyorganosiloxane A4 A polydimethylsiloxane terminated with trimethylsiloxy groups and having a viscosity of 20,000 mPa ⁇ s
- Polyorganosiloxane A5 A polydimethylsiloxane terminated with trimethylsiloxy groups and having a viscosity of 330,000 mPa ⁇ s
- Alkylpolyglycoside B1 A 63% aqueous solution of a caprylyl/decyl glycoside with a surface tension (1g/l) of 29 mN/m and a pour point of less than 0°C, available under the name DISPONIL ® APG 215 from BASF SE
- Alkylpolyglycoside B2 A 53% aqueous solution of an alkylpolygly
- Amount based on 100% active content corresponds to 0.2 parts (D) per 100 parts (A)
- inventive examples 1 to 9 in Table 2 below show only very slight signs of incipient separation (instability indices less than 0.1) for the measurement of the instability index after 8 hours at 2,300xg, while the non-inventive examples V1 to V3 with higher emulsifier contents have a similar viscosity but clear signs WA12245-S/We 24 show a separation with instability indices greater than 0.3 or even greater than 0.5.
- Example 10 Emulsion polymerization with a polyorganosiloxane emulsion according to the invention 82.5 g of deionized water (C) are initially introduced and 60 g of B1 (corresponds to 37.8 g of active content) and 5.25 g of E are added and mixed for 10 minutes at a stirrer speed of 75/min (corresponds to a peripheral speed of 0.63 m/s).
- component A3 895.65 g of component A3 are added over the course of 60 minutes and mixed for a further 60 minutes at 75/min. This means that 4.22 parts (B) are used per 100 parts (A). The remaining water is added over the course of 60 minutes and stirred in at 75/min. Then 1.79 g of component D2 are added and stirred in for 30 minutes. The emulsion is stored for 48 hours at 4°C and neutralized with 31.5 g of triethanolamine. 13.5 g of phenoxyethanol are then added as component (F) (preservative F2).
- Emulsion polymerization with a non-inventive polyorganosiloxane emulsion 82.5 g of deionized water (C) are initially introduced and 375 g of B1 (corresponds to 236.2 g of active content) are added and mixed for 10 minutes at a stirrer speed of 75/min (corresponds to a peripheral speed of 0.63 m/s). 895.65 g of component A3 are added over the course of 60 minutes and mixed for a further 60 minutes at 75/min. This means that 26.37 parts (B) are used per 100 parts (A). The remaining water is added over the course of 60 minutes and stirred in at 75/min.
- component D2 35 g of component D2 are added and stirred in for 30 minutes.
- the emulsion is stored for 48 hours at 4°C and neutralized with 31.5 g of triethanolamine. 13.5 g of phenoxyethanol are then added as component (F) (preservative F2).
- Example 10 Testing of the emulsion properties of Example 10 and Comparative Example V4
- Example D(50) Viscosity Viscosity Instability D 4 in % by weight in ⁇ m of the emulsion oil phase total weight in mPa ⁇ s in mPa ⁇ s of the emulsion 10 5.53 2,680 2,165,000 0.019 0.018 V4 1.76 2,880 110,372 0.158 not determined
- Table 3 shows, the inventive polyorganosiloxane emulsion from Example 10 enables the formation of a very highly viscous oil without impairing the stability of the emulsion and without forming significant amounts of octamethylcyclotetrasiloxane (D4).
- D4 octamethylcyclotetrasiloxane
- Example 11 Application example as a hair care product A shampoo is formulated from the components shown in Table 4: Table 4: Formulation components Shampoo Ingredients (INCI * name) Quantity in % by weight Citric Acid 1) 0.05 Cocamidopropyl Betaine 2) 5.00 Sodium Laureth Sulfate 3) 29.90 Guar Hydroxypropyltrimonium Chloride 4) 0.20 Sodium Lauryl Sulfate 5) 6.06 Aqua (DI Water) 33.65 Carbomer 6) 0.60 Lactic Acid 7) 0.06 Aqua (DI Water) 20.00 Phenoxyethanol, Ethylhexylglycerin 8) 0.95 C12-13 Alkyl Lactate 9) 0.30 Polyorganosiloxane emulsion from example 2 or V2 2.17 Sodium Hydroxide 10) 0.40 Sodium Chloride 11) 0.66 International Nomenclature of Cosmetic Ingredients The raw materials listed in Table 4 are available under the following trade names: 1) Citric Acid, Sigma 2) Genagen ® CAB 81830%, Clariant WA
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Silicon Polymers (AREA)
- Cosmetics (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2025521547A JP2025533304A (ja) | 2023-03-03 | 2023-03-03 | 粒径が大きなポリオルガノシロキサンエマルジョン及びその調製方法 |
| PCT/EP2023/055442 WO2024183870A1 (de) | 2023-03-03 | 2023-03-03 | Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung |
| EP23709193.9A EP4677007A1 (de) | 2023-03-03 | 2023-03-03 | Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung |
| KR1020257010621A KR20250054825A (ko) | 2023-03-03 | 2023-03-03 | 입자 크기가 큰 폴리오르가노실록산 에멀전 및 이의 제조 방법 |
| CN202380059232.1A CN119698443A (zh) | 2023-03-03 | 2023-03-03 | 具有大粒度的聚有机硅氧烷乳液及其制备方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2023/055442 WO2024183870A1 (de) | 2023-03-03 | 2023-03-03 | Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024183870A1 true WO2024183870A1 (de) | 2024-09-12 |
Family
ID=85477864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/055442 Ceased WO2024183870A1 (de) | 2023-03-03 | 2023-03-03 | Polyorganosiloxan-emulsionen mit grosser partikelgrösse und verfahren zu deren herstellung |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP4677007A1 (de) |
| JP (1) | JP2025533304A (de) |
| KR (1) | KR20250054825A (de) |
| CN (1) | CN119698443A (de) |
| WO (1) | WO2024183870A1 (de) |
Citations (12)
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|---|---|---|---|---|
| EP0200916B1 (de) | 1985-04-02 | 1991-01-23 | Dow Corning Corporation | Verfahren zur Herstellung von Emulsionen und die so erhaltenen Emulsionen |
| EP0418479A1 (de) | 1989-08-04 | 1991-03-27 | Hüls Aktiengesellschaft | Emulgatoren zur Herstellung von lagerstabilen, wässrigen Polysiloxan-bzw. Polysiloxan-Paraffinöl-Emulsionen |
| EP0463431A2 (de) | 1990-06-07 | 1992-01-02 | Dow Corning Corporation | Verfahren zur Herstellung von Polysiloxanemulsionen |
| US5268126A (en) * | 1989-08-04 | 1993-12-07 | Huels Aktiengesellschaft | Emulsifiers for the preparation of aqueous polysiloxane emulsions and aqueous polysiloxane-paraffin oil emulsions with long shelf lives |
| EP0769548A1 (de) | 1995-10-18 | 1997-04-23 | Hüls Aktiengesellschaft | Entschäumerdispersionen für wässrige Tensidsysteme |
| EP0774503A1 (de) | 1995-11-14 | 1997-05-21 | Hüls Aktiengesellschaft | Antischaumdispersion für wässrige Tensidsysteme |
| WO2003092639A1 (en) | 2002-05-03 | 2003-11-13 | Unilever Plc | Hair conditioning compositions containing silicone blend |
| DE19620405B4 (de) | 1996-05-21 | 2005-07-14 | Wacker-Chemie Gmbh | Verfahren zur Herstellung wäßriger Siliconemulsionen |
| DE102006011226A1 (de) * | 2006-03-10 | 2006-07-06 | Wacker Chemie Ag | Verfahren zur Herstellung von Siliconemulsionen |
| EP1813251A2 (de) | 2006-01-30 | 2007-08-01 | Goldschmidt GmbH | Kaltherstellbare, niedrigviskose und langzeitstabile kosmetische Emulsionen |
| DE102014212725A1 (de) | 2014-07-01 | 2014-11-06 | Wacker Chemie Ag | Verfahren zur Herstellung von Polysiloxan-Emulsionen unter Verwendung von Alkylpolyglycosiden |
| US20180193808A1 (en) | 2015-09-14 | 2018-07-12 | Wacker Chemie Ag | Process for continuous production of stable silicone emulsions |
-
2023
- 2023-03-03 WO PCT/EP2023/055442 patent/WO2024183870A1/de not_active Ceased
- 2023-03-03 CN CN202380059232.1A patent/CN119698443A/zh active Pending
- 2023-03-03 KR KR1020257010621A patent/KR20250054825A/ko active Pending
- 2023-03-03 JP JP2025521547A patent/JP2025533304A/ja active Pending
- 2023-03-03 EP EP23709193.9A patent/EP4677007A1/de active Pending
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200916B1 (de) | 1985-04-02 | 1991-01-23 | Dow Corning Corporation | Verfahren zur Herstellung von Emulsionen und die so erhaltenen Emulsionen |
| EP0418479A1 (de) | 1989-08-04 | 1991-03-27 | Hüls Aktiengesellschaft | Emulgatoren zur Herstellung von lagerstabilen, wässrigen Polysiloxan-bzw. Polysiloxan-Paraffinöl-Emulsionen |
| US5133897A (en) | 1989-08-04 | 1992-07-28 | Huels Aktiengesellschaft | Emulsifiers for the preparation of aqueous polysiloxane emulsions and aqueous polysiloxane-paraffin oil emulsions with long shelf lives |
| US5268126A (en) * | 1989-08-04 | 1993-12-07 | Huels Aktiengesellschaft | Emulsifiers for the preparation of aqueous polysiloxane emulsions and aqueous polysiloxane-paraffin oil emulsions with long shelf lives |
| EP0463431A2 (de) | 1990-06-07 | 1992-01-02 | Dow Corning Corporation | Verfahren zur Herstellung von Polysiloxanemulsionen |
| EP0769548A1 (de) | 1995-10-18 | 1997-04-23 | Hüls Aktiengesellschaft | Entschäumerdispersionen für wässrige Tensidsysteme |
| EP0774503A1 (de) | 1995-11-14 | 1997-05-21 | Hüls Aktiengesellschaft | Antischaumdispersion für wässrige Tensidsysteme |
| DE19620405B4 (de) | 1996-05-21 | 2005-07-14 | Wacker-Chemie Gmbh | Verfahren zur Herstellung wäßriger Siliconemulsionen |
| WO2003092639A1 (en) | 2002-05-03 | 2003-11-13 | Unilever Plc | Hair conditioning compositions containing silicone blend |
| EP1813251A2 (de) | 2006-01-30 | 2007-08-01 | Goldschmidt GmbH | Kaltherstellbare, niedrigviskose und langzeitstabile kosmetische Emulsionen |
| US20070178144A1 (en) | 2006-01-30 | 2007-08-02 | Goldschmidt Gmbh | Cold-preparable, low-viscosity and prolonged-stability cosmetic emulsions |
| DE102006011226A1 (de) * | 2006-03-10 | 2006-07-06 | Wacker Chemie Ag | Verfahren zur Herstellung von Siliconemulsionen |
| DE102014212725A1 (de) | 2014-07-01 | 2014-11-06 | Wacker Chemie Ag | Verfahren zur Herstellung von Polysiloxan-Emulsionen unter Verwendung von Alkylpolyglycosiden |
| US20180193808A1 (en) | 2015-09-14 | 2018-07-12 | Wacker Chemie Ag | Process for continuous production of stable silicone emulsions |
| EP3349888B1 (de) | 2015-09-14 | 2019-06-19 | Wacker Chemie AG | Verfahren zur kontinuierlichen herstellung von stabilen siliconemulsionen |
Non-Patent Citations (4)
| Title |
|---|
| DISPERSION LETTERS TECHNICAL, vol. T4, 2013, pages 35 - 4 |
| H. SCHUBERT ET AL., CHEM. ING. TECHN., vol. 61, 1989, pages 701 - 711 |
| LEHRBUCH W. NOLL: "Chemistry and Technology of Silicones", 1968, VERLAG CHEMIE WEINHEIM, pages: 428 - 431 |
| Y. K. KAMATHHANS-DIETRICH WEIGMANN, J. SOC. COSMET. CHEM., vol. 37, 1986, pages 111 - 124 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20250054825A (ko) | 2025-04-23 |
| CN119698443A (zh) | 2025-03-25 |
| EP4677007A1 (de) | 2026-01-14 |
| JP2025533304A (ja) | 2025-10-03 |
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