摘要:
The present invention provides a cosmetic exhibiting superior feeling to the touch and a superior uniformity using a novel organopolysiloxane. The cosmetic contains a liquid organopolysiloxane having fluidity at 25° C. and having a crosslinked three-dimensional network structure. The aforementioned liquid organopolysiloxane has a loss factor, tan δ, at a shear frequency of 10 Hz, which is 1 or more.
摘要:
To provide a method of producing a polyoxyalkylene-modified polysiloxane composition that is free of acid-mediated carbon-oxygen bond and silicon-oxygen bond cleavage, that is substantially deodorized and also does not generate odor with elapsed time, and that is therefore well suited for use in cosmetic applications, e.g., for hair cosmetics, skin cosmetics, and so forth. A production method of this invention is characterized by removing the odor-causing substance from a polyoxyalkylene-modified polysiloxane composition that has been synthesized by a hydrosilylation reaction, by subjecting the polyoxyalkylene-modified polysiloxane composition to a hydrolysis treatment in the presence of an acidic inorganic salt that is a solid at 25° C. and gives a specific pH at 25° C. in aqueous solution; for example, potassium hydrogensulfate.
摘要:
The present invention has an objective to provide a surface treatment agent which is safe with no generation of hydrogen, can be suitably used in a surface treatment of powder(s), exhibits good compatibility with other raw materials of cosmetics, and therefore, can improve a dispersing property and stability of powder(s) contained in a cosmetic, as well as provide a powder which has been subjected to a surface treatment with the aforementioned powder treatment agent, and a cosmetic raw material and a cosmetic which are produced by blending them, exhibit superior storage stability, have a superior outer appearance, and exhibit a superior sensation during use. A sugar alcohol-modified organopolysiloxane having a specified structure is used in the powder treatment.
摘要:
An excellent oil-thickening or -gelling agent is provided. The agent is compatible with various oils and can freely control the form or viscosity of oily raw materials or cosmetics by changing the quantity thereof added. The agent contains a novel co-modified organopolysiloxane that contains both a group having a siloxane dendron structure and a hydrophilic group and that preferably has a degree of polymerization of 200 or more. A gel composition containing the co-modified organopolysiloxane is also provided. The gel composition is useful as a base that permits stable and easy preparation of cosmetics having various viscoelasticities and forms. An oil is kept in the form of a gel that has a viscoelasticity falling within the intermediate range between the viscoelasticity of liquid and that of solid. Cosmetics containing the thickening or gelling agent are also provided.
摘要:
(1) The invention provides a composition for hair that imparts to the hair such properties as moist feeling, the feel of smoothness, thick-film touch, and ease of combing. These properties are long lasting and do not disappear after repeated brushing. Furthermore, neither in a moist state during washing, nor in a dry state, the hair produces the feel of unpleasant touch. The hair treated with the composition of the invention does to become sticky after drying. (2) The shampoo compositions of the invention demonstrate superb foamability and washability. The feel of smoothness and ease of combing are not lost even after the repeated hair wash. The composition of the invention comprises a specific block copolymer of polyorganosiloxane and polyoxyalkylene used in the amount of 0.01 to 10 mass %.
摘要:
This inventive thickener or gellant for oil materials is characterized by comprising (A) an high molecular weight organopolysiloxane that has a polyglycerol structure-containing hydrophilic group Q and that is represented by the following structural formula (1): R3-q(R11)qSi—O—(SiR112—O)n1—(SiR11Q-O)n2—(SiR11L-O)n3—Si(R)11)qR3-q wherein R11 is a monovalent hydrocarbyl group or a hydrogen atom; L is a chain organosiloxane group, n1, n2, and n3 are numbers in the ranges 200≦n1≦1000, 0≦n2≦20, and 0≦n3≦50; R is a group selected from L and Q; q is an integer in the range from 0 to 3; wherein when n2=0, q is an integer in the range from 1 to 3 and at least one R is Q. The thickener or gellant exhibits an excellent compatibility with a variety of oil systems.
摘要:
To provide a method of producing a polyoxyalkylene-modified polysiloxane composition that is free of acid-mediated carbon-oxygen bond and silicon-oxygen bond cleavage, that is substantially deodorized and also does not generate odor with elapsed time, and that is therefore well suited for use in cosmetic applications, e.g., for hair cosmetics, skin cosmetics, and so forth. A production method of this invention is characterized by removing the odor-causing substance from a polyoxyalkylene-modified polysiloxane composition that has been synthesized by a hydrosilylation reaction, by subjecting the polyoxyalkylene-modified polysiloxane composition to a hydrolysis treatment in the presence of an acidic inorganic salt that is a solid at 25° C. and gives a specific pH at 25° C. in aqueous solution; for example, potassium hydrogensulfate.
摘要:
The deodorized, polyether-modified polysiloxane composition not producing a substance giving off a foul odor, while being produced or stored, which results from hydrolysis, oxidation or the like of a by-product or unreacted material and temporarily stable, a method for producing the same, and a cosmetic containing the same, wherein a polyether-modified polysiloxane composition, synthesized by hydrosilylation in which a polyoxyalkylene having the carbon-carbon double bond at the terminal is reacted with an organohydrogen polysiloxane, is refined by treatment in the presence of a solid acid.
摘要:
The present invention provides a novel organopolysiloxane in which a rich hydrophilic property is exhibited, not only superior miscibility with a hydrophilic component and but also a hydrophobic property are exhibited, and superior miscibility with both a silicone oil and a non-silicone oil such as a hydrocarbon oil, an ester oil or the like, and provide various usages of the aforementioned novel organopolysiloxane by developing the superior characteristics thereof such as good surface activity power, a distinctive sensation during use, increased stability and the like. A co-modified organopolysiloxane having a specified chemical structure in which a sugar alcohol-modified group and a long-chain hydrocarbon group are present in one molecule is produced. The co-modified organopolysiloxane is blended, as a surfactant, a powder treatment agent, a gelling agent or the like, or as a cosmetic raw material appropriately together with powder(s), oil agent(s) or the like, in a preparation for external use, and in particular, a cosmetic.
摘要:
An excellent oil-thickening or -gelling agent is provided. The agent is compatible with various oils and can freely control the form or viscosity of oily raw materials or cosmetics by changing the quantity thereof added. The agent contains a novel co-modified organopolysiloxane that contains both a group having a siloxane dendron structure and a hydrophilic group and that preferably has a degree of polymerization of 200 or more. A gel composition containing the co-modified organopolysiloxane is also provided. The gel composition is useful as a base that permits stable and easy preparation of cosmetics having various viscoelasticities and forms. An oil is kept in the form of a gel that has a viscoelasticity falling within the intermediate range between the viscoelasticity of liquid and that of solid. Cosmetics containing the thickening or gelling agent are also provided.