WO2013161500A1 - オルガノポリシロキサンエマルション組成物 - Google Patents
オルガノポリシロキサンエマルション組成物 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/06—Polysiloxanes containing silicon bound to oxygen-containing groups
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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
- 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
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
- A61K8/89—Polysiloxanes
- A61K8/891—Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
-
- 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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- 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
- A61Q5/12—Preparations containing hair conditioners
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions 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; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
-
- 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
- A61K2800/10—General cosmetic use
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
- C08G2650/58—Ethylene oxide or propylene oxide copolymers, e.g. pluronics
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
Definitions
- the present invention relates to a stable organopolysiloxane emulsion composition obtained by emulsion polymerization of an organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group.
- an organopolysiloxane having a molecular chain terminal at a silanol group and having condensation reactivity and having a content of non-condensation reactive organosiloxane oligomer having 20 or less silicon atoms of 5,000 ppm or less is 40 ° C.
- Patent Document 3 Japanese Patent No. 3145394.
- the viscosity is several.
- One million mm 2 / s is the limit, and in order to achieve a degree of polymerization higher than that, the emulsion polymerization time had to be further extended.
- the present invention has been made in view of the above-described problems of the prior art, and a conventional nonionic interface is used in emulsion polymerization of an organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group. It is an object of the present invention to provide an organopolysiloxane emulsion composition that can easily obtain the desired degree of polymerization without inhibiting the polymerization as in the case of an activator and is further excellent in stability.
- the present inventor obtained a nonionic group having a hydroxyl group at the terminal of a conventional type as an organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group.
- organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group.
- a nonionic surfactant in which the hydroxyl group at the end is blocked with an organic group such as an alkyl group or an acyl group instead of a surfactant, polymerization is not hindered.
- the inventors have found that the reaction proceeds to the desired degree of polymerization in a short time, and that a very stable organopolysiloxane emulsion composition can be obtained, thereby completing the invention.
- the present invention provides the organopolysiloxane emulsion composition shown below.
- (A) Organopolysiloxane having a silanol group or an organooxy group: 100 parts by mass
- (B) Nonionic surfactant represented by the following general formula (2): 1 to 100 parts by mass, R 2 O (EO) a (PO) b R 3 (2) (Wherein R 2 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 4 (CO) —, and R 4 is a linear group having 1 to 30 carbon atoms.
- R 3 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 5 (CO) —, and R 5 is an alkyl group having 1 to 30 carbon atoms.
- EO represents an ethylene oxide group
- PO represents an alkylene oxide group having 3 or more carbon atoms
- a and b are numbers from 0 to 100, and a + b> 0.
- (C) Surfactant other than component (B): 1 to 100 parts by mass, An organopolysiloxane emulsion composition obtained by emulsion polymerization of an emulsion containing (D) a polymerization catalyst: 0 to 100 parts by mass and (E) water: 1 to 100,000 parts by mass.
- R 0 O (R 1 2 SiO) n R 0
- R 0 is independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms
- R 1 is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms
- n is a number corresponding to the viscosity of the organopolysiloxane at 25 ° C. of 20 to 100,000 mm 2 / s.
- the conventional nonionic surfactant having a hydroxyl group at the terminal end inhibits polymerization.
- a nonionic surfactant blocked with an organic group such as an alkyl group or an acyl group it is possible to obtain a very stable organopolysiloxane emulsion composition without inhibiting polymerization. Furthermore, it becomes possible to suppress the amount of octamethylcyclotetrasiloxane generated in the course of emulsion polymerization.
- the organopolysiloxane emulsion composition of the present invention is (A) an organopolysiloxane having a silanol group or an organooxy group, (B) a nonionic surfactant represented by the following general formula (2), R 2 O (EO) a (PO) b R 3 (2) (Wherein R 2 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 4 (CO) —, and R 4 is a linear group having 1 to 30 carbon atoms.
- R 3 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 5 (CO) —, and R 5 is an alkyl group having 1 to 30 carbon atoms.
- EO represents an ethylene oxide group
- PO represents an alkylene oxide group having 3 or more carbon atoms
- a and b are numbers from 0 to 100, and a + b> 0.
- EO, PO array format may be random or block.
- C Surfactant other than component (B), It can be obtained by emulsion polymerization of an emulsion containing (D) a polymerization catalyst (provided that the component (C) has a catalytic action) and (E) water.
- Component (A) is an organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group, which has condensation reactivity under acidic conditions or basic conditions.
- organooxy group such as a condensation-reactive silanol group or alkoxy group, which has condensation reactivity under acidic conditions or basic conditions.
- condensation reactive alkoxy group include a methoxy group, an ethoxy group, an isopropoxy group, an n-propoxy group, a t-butoxy group, an s-butoxy group, and an n-butoxy group.
- organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group
- organopolysiloxane having an organooxy group such as a condensation-reactive silanol group or alkoxy group
- R 0 O (R 1 2 SiO) n R 0 (1)
- R 0 is independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms
- R 1 is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms.
- n is a number corresponding to the viscosity of the organopolysiloxane at 25 ° C. of 20 to 100,000 mm 2 / s.
- R 0 is a hydrogen atom
- the end of the organopolysiloxane of formula (1) is a hydroxyl group (silanol group)
- R 0 is a monovalent hydrocarbon group
- the end of the organopolysiloxane of formula (1) is organo It is an oxy group.
- R 0 is particularly preferably a monovalent hydrocarbon group of 1 to 10, particularly 1 to 4, particularly an alkyl group, and the above-mentioned organooxy group represented by —OR 0 is preferable.
- R 1 is independently an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, specifically, a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, Hexyl group, heptyl group, octyl group, nonyl group, decyl group, dodecyl group, tetradecyl group, alkyl group such as hexadecyl group, octadecyl group, cyclopentyl group, cyclohexyl group, aryl group such as phenyl group, tolyl group, naphthyl group, Alkenyl groups such as vinyl groups and allyl groups, aralkyl groups such as benzyl groups, phenylethyl groups, and phenylpropyl groups, and some or all of the hydrogen atoms of these groups are
- a monovalent hydrocarbon group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, a propyl group, a butyl group, and a phenyl group is preferable. More preferably, 80 mol% or more of the total R 1 is a methyl group.
- n is a value corresponding to the viscosity of the organopolysiloxane at 25 ° C. of 20 to 100,000 mm 2 / s. Preferably 50 ⁇ 50,000mm 2 / s, particularly preferably 50 ⁇ 10,000mm 2 / s. When the viscosity is in the range of 20 to 100,000 mm 2 / s, the stability of the emulsion is good. This viscosity can be measured with an Ostwald viscometer.
- the component (A) is preferably an organopolysiloxane whose molecular chain end is blocked with an organooxy group such as a silanol group or an alkoxy group, and the molecular structure is not only linear but also has a branched structure. But you can.
- the component (B) is a nonionic surfactant represented by the following general formula (2).
- R 2 O (EO) a (PO) b R 3 (2) (Wherein R 2 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 4 (CO) —, and R 4 is a linear group having 1 to 30 carbon atoms.
- R 3 is a linear or branched alkyl group having 1 to 30 carbon atoms, or an organic group represented by R 5 (CO) —, and R 5 is an alkyl group having 1 to 30 carbon atoms.
- EO represents an ethylene oxide group
- PO represents an alkylene oxide group such as a propylene oxide group or a butylene oxide group having 3 or more carbon atoms
- a and b are numbers from 0 to 100.
- a + b> 0, and the EO and PO arrangement may be random or block.
- R 2 is 6 to 30, a linear or branched alkyl group having a carbon number of R 3 is 1 to 5
- R 2 is preferably a linear or branched alkyl group having 10 to 14 carbon atoms
- R 3 is a linear or branched alkyl group having 1 to 3 carbon atoms.
- R 2 is R 4 (CO) - is an organic group represented by, R 4 is a linear or branched alkyl group having 6 to 30 carbon atoms, the carbon number of R 3 is 1-5 straight It is preferably a chain or branched alkyl group, particularly preferably R 4 is a linear or branched alkyl group having 10 to 14 carbon atoms and R 3 is a linear or branched alkyl group having 1 to 3 carbon atoms. It is a branched alkyl group.
- EO represents ethylene oxide
- PO represents alkylene oxide having 3 or more carbon atoms.
- alkylene oxide include 3 to 3 carbon atoms such as propylene oxide, butylene oxide, pentylene oxide, hexylene oxide, heptylene oxide, and octylene oxide.
- a and b are numbers from 0 to 50, and a + b> 0.
- the values of a and b are preferably such that the HLB is 4 to 18, and particularly preferably the values of a and b such that the HLB is 7 to 17.
- a is preferably 2 to 40, more preferably 2 to 30, and b is preferably 0 to 30, more preferably 0 to 20.
- the EO and PO arrangement format may be block or random.
- nonionic surfactant represented by the formula (2) examples include those shown below. C 12 H 25 O (C 2 H 4 O) 4 CH 3 (HLB: 10.2) C 12 H 25 O (C 2 H 4 O) 22.5 CH 3 (HLB: 16.9)
- Component (B) is used in an amount of 1 to 100 parts by weight, preferably 2 to 25 parts by weight, particularly preferably 3 to 10 parts by weight per 100 parts by weight of component (A). If the amount of component (B) is too small, it will be difficult to form an O / W emulsion, or the stability of the emulsion will tend to decrease. If it is too large, silicone used as a base oil when the emulsion is used May be hindered by emulsifiers. Component (B) may be used alone or in combination of two or more.
- Component (C) is a surfactant other than component (B), and is an anionic surfactant, a cationic surfactant, or a nonionic surfactant represented by formula (2).
- Nonionic surfactants are exemplified.
- the anionic surfactant a general formula: R 6 OSO 3 M or R 6 —Ph—OSO 3 M (R 6 is a linear or branched alkyl group having 6 to 30 carbon atoms) , Ph is a phenyl group, and M is a hydrogen atom, a metal element, or an ammonium ion or a quaternary ammonium ion.
- the linear or branched alkyl group having 6 to 30 carbon atoms includes n-hexyl group, n-octyl group, 2-ethylhexyl group, n-nonyl group, n-decyl group, n-undecyl group.
- the metal element include alkali metals such as lithium, sodium, potassium, rubidium and cesium, alkaline earth metals such as calcium, strontium, barium and radium, ammonium ions such as aluminum salts and triethanolamine salts, or quaternary. An ammonium ion etc. are mentioned.
- R 6 is a linear or branched alkyl group having 6 to 12 carbon atoms
- M is a hydrogen atom, or an alkali metal element or alkaline earth metal element.
- examples include hexyl benzene sulfonic acid, octyl benzene sulfonic acid, decyl benzene sulfonic acid, dodecyl benzene sulfonic acid, cetyl benzene sulfonic acid, myristyl benzene sulfonic acid and salts thereof.
- Cationic surfactants include octyltrimethylammonium hydroxide, dodecyltrimethylammonium hydroxide, hexadecyltrimethylammonium hydroxide, octyldimethylbenzylammonium hydroxide, decyldimethylbenzylammonium hydroxide, didodecyldimethylammonium hydroxide, dioctadecyl Examples include quaternary ammonium hydroxides such as dimethylammonium hydroxide and their salts.
- Nonionic surfactants other than the surfactant of formula (2) include polyoxyalkylene alkyl ether, polyoxyalkylene alkylphenol ether, polyoxyalkylene alkyl ester, polyoxyalkylene sorbitan alkyl ester, polyethylene glycol, polypropylene glycol, diethylene glycol. Etc. are exemplified.
- the general formula R 6 O (EO) e (PO) f H (R 6 is the same as above, e and f are 0 to 100, where e + f> 0, EO is ethylene oxide, and PO is propylene oxide.
- R 6 is a linear or branched alkyl group having 6 to 12 carbon atoms, and e and f are 0 to 25.
- a nonionic surfactant when used, the condensation is inhibited, so that the amount is added to such an extent that the target polymer is not impaired.
- any of the above-described surfactants may be used, but it is particularly preferable to use an anionic surfactant. Moreover, you may use 1 type, or 2 or more types of (C) component.
- Component (C) is used in an amount of 1 to 100 parts by weight, preferably 2 to 25 parts by weight, particularly preferably 3 to 10 parts by weight per 100 parts by weight of component (A). is there. If the amount of component (C) is too small, it will be difficult to form an O / W type emulsion, or the stability of the emulsion will tend to be reduced. If the amount is too large, it will be used as a base oil when the emulsion is used. May be hindered by emulsifiers.
- (D) As a polymerization catalyst of a component, there exist an acidic catalyst and a basic catalyst.
- the acidic catalyst include hydrochloric acid, sulfuric acid, cation exchange resin, and the like.
- the basic catalyst include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, anion exchange resins, and the like.
- R 4 NOH ammonium hydroxide
- Component (D) is used in an amount of 0 to 100 parts by weight, preferably 0 to 20 parts by weight, based on 100 parts by weight of component (A). More than part by mass. If the amount of the component (D) is too small, the polymerization may not proceed sufficiently. If the amount is too large, it is necessary to add a large amount of neutralizing agent, which may impair the stability of the emulsion.
- Water is 1 to 100,000 parts by weight, preferably 1 to 1,000 parts by weight, and particularly preferably 2 to 200 parts by weight with respect to 100 parts by weight of component (A). . If the amount of water is too small, it may be difficult to form an O / W type emulsion. If the amount is too large, the concentration of the catalyst may decrease, and polymerization may not proceed sufficiently.
- component organopolysiloxane As a method for emulsion polymerization, (A) component organopolysiloxane, (B) component nonionic surfactant, (C) component surfactant, and (E) component water are mixed with a homogenizer, high-pressure homogenizer, homogenizer. Emulsification is performed using an emulsifier such as a disper, homomixer, colloid mill, line mixer, universal mixer, ultramixer, planetary mixer, or combimix.
- a disper, homomixer, colloid mill such as a disper, homomixer, colloid mill, line mixer, universal mixer, ultramixer, planetary mixer, or combimix.
- the polymerization catalyst as the component (D) can be emulsified together with the components (A), (B), (C), and (E), or (A), (B), (C),
- the component (E) may be added after emulsification, but may be added if the component (C) has a catalytic action. Further, when the component (C) has a catalytic action or when the component (D) is added during the emulsification step, the condensation also proceeds at the same time. Therefore, it is preferable to emulsify at a temperature below 40 ° C. When emulsification is performed at a temperature of 40 ° C. or higher, there is a possibility that the production of octamethylcyclotetrasiloxane increases. Therefore, emulsification is preferably performed at a temperature of less than 15 ° C., particularly preferably less than 5 ° C.
- the polymerization step is preferably performed at a temperature of less than 40 ° C., preferably less than 15 ° C., particularly preferably less than 5 ° C., within 48 hours, particularly within 20 hours. If polymerization is carried out at a temperature of 40 ° C. or higher, there is a risk that the production of octamethylcyclotetrasiloxane will increase.
- the organopolysiloxane produced by the emulsion polymerization reaches 1 million mPa ⁇ s or more, preferably 3 million mPa ⁇ s or more, particularly preferably 8 million mPa ⁇ s or more within 20 hours.
- the content of octamethylcyclotetrasiloxane in the organopolysiloxane produced by the emulsion polymerization can be 4,000 ppm or less.
- the content of octamethylcyclotetrasiloxane can be measured by gas chromatography analysis.
- an acid catalyst can be added for the purpose of shortening the polymerization step, and an emulsifier can be added for the purpose of improving the stability of the emulsion.
- the polymerization is stopped.
- neutralization may be performed with an alkaline substance such as sodium carbonate, sodium hydroxide, triethanolamine or ammonia, or an acidic substance such as acetic acid, formic acid, phosphoric acid or hydrochloric acid. Should be in the range. Further, at this time, water can be added to adjust the silicone concentration, and an antiseptic agent, antifungal agent and the like can be added to preserve the emulsion.
- an organopolysiloxane such as R 7 3 SiO (R 7 2 SiO) g SiR 7 3
- the emulsion polymerization step, or the neutralized emulsion Can be obtained by obtaining an organopolysiloxane blocked with a triorganosilyl group, or an organo such as R 7 3 Si (OR 8 ) 1 , R 7 2 Si (OR 8 ) 2 , R 7 1 Si (OR 8 ) 3
- oxysilane it is possible to introduce a branch unit into the siloxane chain or introduce various functional groups.
- R 7 is independently a hydrogen atom or an unsubstituted or substituted monovalent hydrocarbon group having 1 to 20 carbon atoms, and the unsubstituted or substituted monovalent hydrocarbon group is the same as R 1 described above. Can be exemplified.
- R 7 is preferably a monovalent hydrocarbon group having 1 to 6 carbon atoms, such as a methyl group, an ethyl group, a propyl group, a butyl group, or a phenyl group.
- g is 0-100.
- R 8 is independently a hydrogen atom or an alkyl group having 1 to 20 carbon atoms.
- alkyl group having 1 to 20 carbon atoms examples include methyl group, ethyl group, propyl group, butyl group, pentyl group, hexyl group, heptyl group, octyl group, nonyl group, decyl group, dodecyl group, tetradecyl group, hexadecyl group, An octadecyl group, a cyclopentyl group, a cyclohexyl group, etc. can be illustrated.
- R 8 is preferably a methyl group, an ethyl group, or an isopropyl group.
- the particle diameter is a volume-based median diameter value measured with a laser diffraction / scattering particle size distribution analyzer LA-920 (manufactured by Horiba, Ltd.).
- the median diameter is a particle diameter corresponding to 50% cumulative when the particle size distribution is expressed as a cumulative distribution.
- a relative refractive index of 1.05 dimethylpolysiloxane refractive index of 1.40, water refractive index of 1.33
- the siloxane viscosity is a viscosity at 25 ° C.
- Stability was evaluated according to the following criteria by observing the appearance when the prepared emulsion was put in a 100 g glass bottle and allowed to stand at 50 ° C. for 1 month. ⁇ : Separation into two layers is not confirmed ⁇ : Separation into two layers is confirmed
- Example 1 To 100 parts by mass of organopolysiloxane having a viscosity of 5,000 mm 2 / s and a molecular chain terminal of a silanol group, C 12 H 25 O (C 2 H 4 O) 4 CH 3 (HLB: 10.2) 2.0 Homo disperse of mass parts, 6.0 parts by mass of C 12 H 25 O (C 2 H 4 O) 22.5 CH 3 (HLB: 16.9), 4.0 parts by mass of dodecylbenzenesulfonic acid and 6.0 parts by mass of water After being emulsified, 79.6 parts by mass of water was added, diluted and dispersed with a homomixer, and emulsion polymerization was performed at 0 ° C. for 20 hours and 48 hours. Thereafter, 2.4 parts by mass of triethanolamine was added and neutralized to obtain an emulsion. The results are shown in Table 1.
- Viscosity organopolysiloxane 100 parts by weight of a molecular chain terminal silanol groups of 5,000mm 2 / s, C 12 H 25 O (C 2 H 4 O) 4 CH 3 (HLB: 10.2) 1.0 Homo disperse with 10 parts by mass of C 12 H 25 O (C 2 H 4 O) 22.5 CH 3 (HLB: 16.9), 3.0 parts by weight of dodecylbenzenesulfonic acid and 6.0 parts by weight of water Then, 84.4 parts by mass of water was added, diluted and dispersed with a homomixer, and subjected to emulsion polymerization at 0 ° C. for 20 hours and 48 hours. Thereafter, 2.4 parts by mass of triethanolamine was added and neutralized to obtain an emulsion. The results are shown in Table 1.
- composition of the present invention is particularly useful as a cosmetic or house-holding product because it is excellent in stability and usability, and can be used for hair care products such as shampoos and rinses. It can also be used as a protective material for furniture and sundries, mold release agents used when processing rubber and plastic products, and fiber treatment agents for the purpose of imparting water repellency and flexibility to fibers. It is.
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Abstract
Description
〔1〕
(A)シラノール基又はオルガノオキシ基を有するオルガノポリシロキサン:100質量部、
(B)下記一般式(2)で表されるノニオン性界面活性剤:1~100質量部、
R2O(EO)a(PO)bR3 (2)
(式中、R2は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR4(CO)-で示される有機基であり、R4は炭素数1~30の直鎖状又は分岐状のアルキル基である。R3は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR5(CO)-で示される有機基であり、R5は炭素数1~30の直鎖状又は分岐状のアルキル基である。EOはエチレンオキシド基、POは炭素数3以上のアルキレンオキシド基を表し、a,bは0~100の数で、a+b>0である。また、EO,POの配列の形式は、ランダムでもブロックでもよい。)
(C)(B)成分以外の界面活性剤:1~100質量部、
(D)重合用触媒:0~100質量部、及び
(E)水:1~100,000質量部
を含有するエマルションを乳化重合することで得られるオルガノポリシロキサンエマルション組成物。
〔2〕
(A)シラノール基又はオルガノオキシ基を有するオルガノポリシロキサンが、下記一般式(1)で表されるオルガノポリシロキサンであることを特徴とする〔1〕に記載のオルガノポリシロキサンエマルション組成物。
R0O(R1 2SiO)nR0 (1)
(式中、R0は独立に水素原子又は非置換もしくは置換の炭素数1~20の1価炭化水素基、R1は独立に非置換もしくは置換の炭素数1~20の1価炭化水素基であり、nはこのオルガノポリシロキサンの25℃における粘度を20~100,000mm2/sにするのに相当する数である。)
〔3〕
(C)成分が、アニオン性界面活性剤であることを特徴とする〔1〕又は〔2〕に記載のオルガノポリシロキサンエマルション組成物。
〔4〕
エマルション組成物中のオルガノポリシロキサンに含まれるオクタメチルシクロテトラシロキサンの含有量が4,000ppm以下であることを特徴とする〔1〕~〔3〕のいずれかに記載のオルガノポリシロキサンエマルション組成物。
(A)シラノール基又はオルガノオキシ基を有するオルガノポリシロキサン、
(B)下記一般式(2)で表されるノニオン性界面活性剤、
R2O(EO)a(PO)bR3 (2)
(式中、R2は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR4(CO)-で示される有機基であり、R4は炭素数1~30の直鎖状又は分岐状のアルキル基である。R3は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR5(CO)-で示される有機基であり、R5は炭素数1~30の直鎖状又は分岐状のアルキル基である。EOはエチレンオキシド基、POは炭素数3以上のアルキレンオキシド基を表し、a,bは0~100の数で、a+b>0である。また、EO,POの配列の形式は、ランダムでもブロックでもよい。)
(C)(B)成分以外の界面活性剤、
(D)重合用触媒(但し、(C)成分に触媒作用があればいれなくてもよい)、及び
(E)水
を含有するエマルションを乳化重合することにより得られる。
縮合反応性のアルコキシ基としては、メトキシ基、エトキシ基、イソプロポキシ基、n-プロポキシ基、t-ブトキシ基、s-ブトキシ基、n-ブトキシ基等が例示できる。
R0O(R1 2SiO)nR0 (1)
(式中、R0は独立に水素原子又は非置換もしくは置換の炭素数1~20の1価炭化水素基、R1は独立に非置換もしくは置換の炭素数1~20の1価炭化水素基であり、nはこのオルガノポリシロキサンの25℃における粘度を20~100,000mm2/sにするのに相当する数である。)
R2O(EO)a(PO)bR3 (2)
(式中、R2は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR4(CO)-で示される有機基であり、R4は炭素数1~30の直鎖状又は分岐状のアルキル基である。R3は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR5(CO)-で示される有機基であり、R5は炭素数1~30の直鎖状又は分岐状のアルキル基である。EOはエチレンオキシド基、POは炭素数3以上のプロピレンオキシド基、ブチレンオキシド基等のアルキレンオキシド基を表し、a,bは0~100の数で、a+b>0である。また、EO,POの配列の形式は、ランダムでもブロックでもよい。)
C12H25O(C2H4O)4CH3(HLB:10.2)
C12H25O(C2H4O)22.5CH3(HLB:16.9)
(B)成分は、1種もしくは2種以上使用してもよい。
ここで、炭素数6~30の直鎖状又は分岐状のアルキル基としては、n-ヘキシル基、n-オクチル基、2-エチルヘキシル基、n-ノニル基、n-デシル基、n-ウンデシル基、n-ドデシル基、n-トリデシル基、n-テトラデシル基、n-ペンタデシル基、n-ヘキサデシル基、n-ヘプタデシル基、n-オクタデシル基、n-ノナデシル基、n-エイコシル基等が挙げられる。また、金属元素としては、リチウム、ナトリウム、カリウム、ルビジウム、セシウム等のアルカリ金属、カルシウム、ストロンチウム、バリウム、ラジウム等のアルカリ土類金属、アルミニウム塩、トリエタノールアミン塩等のアンモニウムイオン又は第4級アンモニウムイオンなどが挙げられる。
特に好ましくは、R6は炭素数6~12の直鎖状又は分岐状のアルキル基で、Mは水素原子、又はアルカリ金属元素もしくはアルカリ土類金属元素である。例えば、ヘキシルベンゼンスルホン酸、オクチルベンゼンスルホン酸、デシルベンゼンスルホン酸、ドデシルベンゼンスルホン酸、セチルベンゼンスルホン酸、ミリスチルベンゼンスルホン酸及びその塩等が例示される。
他には、ラウリン酸、ステアリン酸、オレイン酸、リノレン酸等の高級脂肪酸及びその塩や、一般式:R6O(EO)c(PO)dSO3M又はR6-Ph-O(EO)c(PO)dSO3M(R6,M,EO,POは上記と同じ、c,dは0~100である。)で表されるようなポリオキシエチレンモノアルキルエーテルの硫酸エステル、アルキルナフチルスルホン酸及びその塩等が挙げられる。
また、(C)成分は、1種もしくは2種以上使用してもよい。
なお、本発明において、上記乳化重合により生成したオルガノポリシロキサンは、20時間以内に100万mPa・s以上、好ましくは300万mPa・s以上、特に好ましくは800万mPa・s以上に達する。
また、R8は独立に水素原子又は炭素数1~20のアルキル基である。炭素数1~20のアルキル基としては、メチル基、エチル基、プロピル基、ブチル基、ペンチル基、ヘキシル基、ヘプチル基、オクチル基、ノニル基、デシル基、ドデシル基、テトラデシル基、ヘキサデシル基、オクタデシル基、シクロペンチル基、シクロヘキシル基などが例示できる。R8として、好ましくはメチル基、エチル基、イソプロピル基である。
シロキサン粘度は、調製したエマルション300gにイソプロピルアルコール300gを攪拌しながら添加し、析出したジメチルシロキサンのみを105℃で3時間乾燥したものを回転粘度計により測定した25℃における粘度である。
オクタメチルシクロテトラシロキサン(D4)含有量は、調製したエマルション0.1gにテトラデカンを内部標準として20ppm添加したアセトン10mlで抽出(3時間振とう)後、一晩放置した後にアセトン層をガスクロマトグラフィー分析にて定量した値である。
安定性は、100gガラス瓶に調製したエマルションを入れ、50℃で1ヶ月静置させたときの外観を観察し、下記基準により評価した。
○:二層への分離が確認されない
×:二層への分離が確認される
粘度が5,000mm2/sの分子鎖末端がシラノール基であるオルガノポリシロキサン100質量部に、C12H25O(C2H4O)4CH3(HLB:10.2)2.0質量部、C12H25O(C2H4O)22.5CH3(HLB:16.9)6.0質量部、ドデシルベンゼンスルホン酸4.0質量部及び水6.0質量部をホモディスパーにより乳化させた後、水79.6質量部を添加し、ホモミキサーにより希釈分散させ、0℃にて20時間及び48時間乳化重合を行った。その後、トリエタノールアミン2.4質量部を添加し、中和することでエマルションを得た。結果は表1の通りである。
粘度が5,000mm2/sの分子鎖末端がシラノール基であるオルガノポリシロキサン100質量部に、C12H25O(C2H4O)4CH3(HLB:10.2)1.0質量部、C12H25O(C2H4O)22.5CH3(HLB:16.9)3.0質量部、ドデシルベンゼンスルホン酸4.0質量部及び水6.0質量部をホモディスパーにより乳化させた後、水84.4質量部を添加し、ホモミキサーにより希釈分散させ、0℃にて20時間及び48時間乳化重合を行った。その後、トリエタノールアミン2.4質量部を添加し、中和することでエマルションを得た。結果は表1の通りである。
粘度が5,000mm2/sの分子鎖末端がシラノール基であるオルガノポリシロキサン100質量部に、ポリオキシエチレン(4モル)ラウリルエーテル2.0質量部、ポリオキシエチレン(23モル)ラウリルエーテル6.0質量部、ドデシルベンゼンスルホン酸4.0質量部及び水6.0質量部をホモディスパーにより乳化させた後、水79.6質量部を添加し、ホモミキサーにより希釈分散させ、0℃にて20時間及び48時間乳化重合を行った。その後、トリエタノールアミン2.4質量部を添加し、中和することでエマルションを得た。結果は表1の通りである。実施例1と比較して、エマルション中のオルガノポリシロキサンの粘度が低く縮合が阻害されていることがわかる。
粘度が5,000mm2/sの分子鎖末端がシラノール基であるオルガノポリシロキサン100質量部に、ポリオキシエチレン(4モル)ラウリルエーテル1.0質量部、ポリオキシエチレン(23モル)ラウリルエーテル3.0質量部、ドデシルベンゼンスルホン酸4.0質量部及び水6.0質量部をホモディスパーにより乳化させた後、水84.4質量部を添加し、ホモミキサーにより希釈分散させ、0℃にて20時間及び48時間乳化重合を行った。その後、トリエタノールアミン2.4質量部を添加し、中和することでエマルションを得た。結果は表1の通りである。実施例2と比較して、エマルション中のオルガノポリシロキサンの粘度が低く縮合が阻害されていることがわかる。
Claims (4)
- (A)シラノール基又はオルガノオキシ基を有するオルガノポリシロキサン:100質量部、
(B)下記一般式(2)で表されるノニオン性界面活性剤:1~100質量部、
R2O(EO)a(PO)bR3 (2)
(式中、R2は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR4(CO)-で示される有機基であり、R4は炭素数1~30の直鎖状又は分岐状のアルキル基である。R3は炭素数1~30の直鎖状又は分岐状のアルキル基、又はR5(CO)-で示される有機基であり、R5は炭素数1~30の直鎖状又は分岐状のアルキル基である。EOはエチレンオキシド基、POは炭素数3以上のアルキレンオキシド基を表し、a,bは0~100の数で、a+b>0である。また、EO,POの配列の形式は、ランダムでもブロックでもよい。)
(C)(B)成分以外の界面活性剤:1~100質量部、
(D)重合用触媒:0~100質量部、及び
(E)水:1~100,000質量部
を含有するエマルションを乳化重合することで得られるオルガノポリシロキサンエマルション組成物。 - (A)シラノール基又はオルガノオキシ基を有するオルガノポリシロキサンが、下記一般式(1)で表されるオルガノポリシロキサンであることを特徴とする請求項1に記載のオルガノポリシロキサンエマルション組成物。
R0O(R1 2SiO)nR0 (1)
(式中、R0は独立に水素原子又は非置換もしくは置換の炭素数1~20の1価炭化水素基、R1は独立に非置換もしくは置換の炭素数1~20の1価炭化水素基であり、nはこのオルガノポリシロキサンの25℃における粘度を20~100,000mm2/sにするのに相当する数である。) - (C)成分が、アニオン性界面活性剤であることを特徴とする請求項1又は2に記載のオルガノポリシロキサンエマルション組成物。
- エマルション組成物中のオルガノポリシロキサンに含まれるオクタメチルシクロテトラシロキサンの含有量が4,000ppm以下であることを特徴とする請求項1~3のいずれか1項に記載のオルガノポリシロキサンエマルション組成物。
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Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US20160257787A1 (en) * | 2015-03-05 | 2016-09-08 | Shin-Etsu Chemical Co., Ltd. | Method for preparing organopolysiloxane emulsion composition |
JP2016166324A (ja) * | 2015-03-05 | 2016-09-15 | 信越化学工業株式会社 | オルガノポリシロキサンエマルション組成物の製造方法及びエマルション組成物 |
US9765189B2 (en) * | 2015-03-05 | 2017-09-19 | Shin-Etsu Chemical Co., Ltd. | Method for preparing organopolysiloxane emulsion composition |
WO2017038938A1 (ja) * | 2015-09-04 | 2017-03-09 | 信越化学工業株式会社 | オルガノポリシロキサンエマルション組成物の製造方法 |
WO2017038936A1 (ja) * | 2015-09-04 | 2017-03-09 | 信越化学工業株式会社 | オルガノポリシロキサンエマルション組成物の製造方法 |
US10494482B2 (en) | 2015-09-04 | 2019-12-03 | Shin-Etsu Chemical Co., Ltd. | Production method for organopolysiloxane emulsion composition |
US10870734B2 (en) | 2015-09-04 | 2020-12-22 | Shin-Etsu Chemical Co., Ltd. | Production method for organopolysiloxane emulsion composition |
Also Published As
Publication number | Publication date |
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EP2843002A4 (en) | 2016-01-06 |
KR20150003154A (ko) | 2015-01-08 |
JPWO2013161500A1 (ja) | 2015-12-24 |
JP5807716B2 (ja) | 2015-11-10 |
US9540541B2 (en) | 2017-01-10 |
US20150037272A1 (en) | 2015-02-05 |
CN104379674B (zh) | 2016-11-02 |
KR102024128B1 (ko) | 2019-09-23 |
CN104379674A (zh) | 2015-02-25 |
EP2843002B1 (en) | 2022-04-06 |
EP2843002A1 (en) | 2015-03-04 |
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