Patents by Inventor Chihiro Hayakawa
Chihiro Hayakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11912828Abstract: Described herein is a crosslinked organosilicone resin that has a crosslinked structure formed by reacting a silicone or hydrocarbon having an alkenyl group at both ends thereof with a hydrosilyl group-containing organosilicone resin, is soluble with a liquid oil at room temperature, and forms a film by volatilization of the oil. Also described herein is a method for preparing a crosslinked organosilicone resin and cosmetics containing a crosslinked organosilicone resin.Type: GrantFiled: July 9, 2019Date of Patent: February 27, 2024Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Takuya Abe, Masayuki Konishi, Chihiro Hayakawa
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Patent number: 11639885Abstract: The present invention addresses the problem of evaluating the hydrophobicity of a powder. According to the present invention, a powder is charged into a mixed solvent composed of a lipophilic solvent and a hydrophilic solvent, the voltage rate R of the mixed solvent is measured at predetermined time intervals while adding a lipophilic solvent to the mixed solvent charged with the powder, a parameter x correlating with the concentration of powder is defined for an arbitrary voltage rate R, a continuous function HP(x) of the ratio of a lipophilic solvent corresponding to x is defined, and HP(x) for required x is set as a representative value of a lipophilic solvent ratio distribution and used as an index of hydrophobicity.Type: GrantFiled: May 23, 2018Date of Patent: May 2, 2023Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Tetsuya Inukai, Mitsugu Saito, Tomoki Okawa, Masanao Kamei, Hiroyuki Moriya, Chihiro Hayakawa, Hiroko Kikuchi, Ryuichi Inaba
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Patent number: 11419796Abstract: A stick-shaped cosmetic product including (a) 0.1 to 4 mass % of at least one selected from a partially cross-linked polyether modified silicone and a partially cross-linked polyglycerin modified silicone, (b) 1 to 10 mass % of wax, and (c) 30 mass % or more of an aqueous component.Type: GrantFiled: March 7, 2017Date of Patent: August 23, 2022Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki Konishi, Chihiro Hayakawa
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Publication number: 20220175652Abstract: Provided is a cosmetic wherein agglomeration during dispersion of a coloring pigment is suppressed, pigment irregularity in the bulk cosmetic and a coating film of the cosmetic is suppressed, and superior coloring pigment uniformity is demonstrated. An oily mixture composition including: (a) a silicone surfactant with an HLB of 6 or less; (b) an acrylic-silicone graft copolymer; (c) an oil that is liquid at 25° C.; and (d) a coloring pigment.Type: ApplicationFiled: March 19, 2020Publication date: June 9, 2022Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Seiji WATAE, Chihiro HAYAKAWA
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Publication number: 20220023157Abstract: A dispersible powder including an organopolysiloxane elastomer powder treated with a surface treatment agent. The surface treatment agent is an organopolysiloxane having a polyoxyalkylene group, a weight-average molecular weight of 300 to 300,000, and an HLB of 8 to 18. Thus, an organopolysiloxane elastomer powder has excellent dispersibility and high over-time dispersion stability in an aqueous medium; and a cosmetic can be blended with the powder.Type: ApplicationFiled: December 4, 2019Publication date: January 27, 2022Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Hiroyuki MORIYA, Chihiro HAYAKAWA, Ryuichi INABA
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Patent number: 11214652Abstract: This organic group-modified organosilicon resin is represented by the average composition formula (1). (R13SiO1/2)a(R23SiO1/2)b(R33SiO1/2)c(R12SiO2/2)d(R1SiO3/2)e(SiO4/2)f??(1) [a, b, c, d, e and f are numbers that satisfy 0?a?400, 0<b?200, 0?c?400, 0?d?320, 0?e?320, 0<f?1,000, and 0.5?(a+b+c)/f?1.5.] Because this organic group-modified organosilicon resin can form films softer than those formed with trimethylene siloxysilicate, the cosmetic obtained by blending with said silicon resin feels good when used, has good cosmetic holding properties, spreads easily and has an excellent finish, easy removal, and superior scratch resistance.Type: GrantFiled: November 29, 2018Date of Patent: January 4, 2022Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takuya Abe, Masayuki Konishi, Chihiro Hayakawa, Masanao Kamei
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Publication number: 20210277187Abstract: An object is to provide a crosslinked organosilicone resin which has a crosslinked structure formed by reacting a silicone or hydrocarbon having an alkenyl group at both ends thereof with a hydrosilyl group-containing organosilicone resin, is soluble with a liquid oil at room temperature, and forms a film by volatilization of the oil, and to provide a method for preparing the same and cosmetics containing the crosslinked organosilicone resin.Type: ApplicationFiled: July 9, 2019Publication date: September 9, 2021Inventors: Takuya Abe, Masayuki Konishi, Chihiro Hayakawa
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Patent number: 11020327Abstract: A gel paste composition including (A) a crosslinking organopolysiloxane and (B) a liquid oil, the crosslinking organopolysiloxane (A) being obtained by reacting an organohydrogenpolysiloxane shown by the following general formula (I) with a polyoxyalkylene compound shown by the following general formula (II) in the presence of a catalyst for hydrosilylation reaction, the component (A) containing polyoxyethylene units in an amount of 20 wt % or more. As a result, the gel paste composition that contains a crosslinking organopolysiloxane having improved compatibility with ethylhexyl methoxycinnamate and water, and thus exhibits excellent dispersibility when blended to a cosmetic thereby providing good feeling and cosmetic sustainability. R1aHbSiO(4-a-b)/2??(I) CcH2c-1O(C2H4O)d(C3H6O)eCcH2c-1??(II).Type: GrantFiled: February 9, 2016Date of Patent: June 1, 2021Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Emi Akabane, Chihiro Hayakawa
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Publication number: 20210045990Abstract: A dispersible powder includes a powder treated with a surface treatment agent, and the surface treatment agent contains a (meth)acrylic polymer having a repeating unit with a phosphorylcholine group. Thus, provided are: a dispersible powder having excellent dispersibility in an aqueous medium and high dispersion stability; and a cosmetic blended with this powder, the cosmetic being capable of forming a uniform cosmetic film and having favorable spreadability upon application, stretchability, adhesiveness, and feeling on use as well as high stability.Type: ApplicationFiled: July 10, 2020Publication date: February 18, 2021Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Hiroyuki MORIYA, Chihiro HAYAKAWA, Mitsuru TANAKA
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Patent number: 10869828Abstract: A cosmetic containing an organosiloxane graft polyvinyl alcohol polymer having a structural unit shown by the general formula (1) and a structural unit shown by the general formula (3). The organosiloxane graft polyvinyl alcohol polymer has a number average molecular weight (Mn) of 5,000 to 500,000 as measured by GPC. There can be provided a cosmetic which has favorable feeling on use and oil resistance, and which is excellent in cosmetic durability improvement. where M1 and M2 each represent a hydrogen atom, an acetyl group, or a siloxane group shown by the general formula (2), provided that at least one of M1 and M2 is a siloxane group shown by the general formula (2); and A represents a single bond or a linking group, where M3 represents a hydrogen atom, an acetyl group, or a siloxane group shown by the formula (2).Type: GrantFiled: April 26, 2017Date of Patent: December 22, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki Konishi, Chihiro Hayakawa
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Publication number: 20200332065Abstract: This organic group-modified organosilicon resin is represented by the average composition formula (1). (R13SiO1/2)a(R23SiO1/2)b(R33SiO1/2)c(R1SiO2/2)d(R1SiO3/2)e(SiO4/2)f ??(1) [a, b, c, d, e and f are numbers that satisfy 0?a?400, 0<b?200, 0?c?400, 0?d?320, 0?e?320, 0<f?1,000, and 0.5?(a+b+c)/f?1.5.] Because this organic group-modified organosilicon resin can form films softer than those formed with trimethylene siloxysilicate, the cosmetic obtained by blending with said silicon resin feels good when used, has good cosmetic holding properties, spreads easily and has an excellent finish, easy removal, and superior scratch resistance.Type: ApplicationFiled: November 29, 2018Publication date: October 22, 2020Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takuya ABE, Masayuki KONISHI, Chihiro HAYAKAWA, Masanao KAMEI
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Publication number: 20200132579Abstract: The present invention addresses the problem of evaluating the hydrophobicity of a powder. According to the present invention, a powder is charged into a mixed solvent composed of a lipophilic solvent and a hydrophilic solvent, the voltage rate R of the mixed solvent is measured at predetermined time intervals while adding a lipophilic solvent to the mixed solvent charged with the powder, a parameter x correlating with the concentration of powder is defined for an arbitrary voltage rate R, a continuous function HP(x) of the ratio of a lipophilic solvent corresponding to x is defined, and HP(x) for required x is set as a representative value of a lipophilic solvent ratio distribution and used as an index of hydrophobicity.Type: ApplicationFiled: May 23, 2018Publication date: April 30, 2020Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Tetsuya INUKAI, Mitsugu SAITO, Tomoki OKAWA, Masanao KAMEI, Hiroyuki MORIYA, Chihiro HAYAKAWA, Hiroko KIKUCHI, Ryuichi INABA
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Patent number: 10626222Abstract: An organic group-modified organosilicon resin having the average compositional formula (1), which is solid or liquid at 25° C., is suited for use in cosmetics. The resin is able to form an emulsion having a pleasant feel on use, a high internal water phase, and stability over time. In formula (1), a, b, c, d, e, and f are numbers: 0?a?400, 0<b?200, 0?c?400, 0?d?320, 0?e?320, 0<f?1,000, and 0.5?(a+b+c)/f?1.5.Type: GrantFiled: March 16, 2018Date of Patent: April 21, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takuya Abe, Masayuki Konishi, Chihiro Hayakawa, Masanao Kamei
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Patent number: 10588849Abstract: Provided is a cosmetic composition formed from a silicone-branched polyglycerol-modified silicone, of which the weight-average molecular weight, in terms of polystyrene, does not exceed 10,000 according to gel permeation chromatography.Type: GrantFiled: April 25, 2016Date of Patent: March 17, 2020Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki Konishi, Chihiro Hayakawa, Akiko Mizuno
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Publication number: 20190201317Abstract: A cosmetic containing an organosiloxane graft polyvinyl alcohol polymer having a structural unit shown by the general formula (1) and a structural unit shown by the general formula (3). The organosiloxane graft polyvinyl alcohol polymer has a number average molecular weight (Mn) of 5,000 to 500,000 as measured by GPC. There can be provided a cosmetic which has favorable feeling on use and oil resistance, and which is excellent in cosmetic durability improvement. where M1 and M2 each represent a hydrogen atom, an acetyl group, or a siloxane group shown by the general formula (2), provided that at least one of M1 and M2 is a siloxane group shown by the general formula (2); and A represents a single bond or a linking group, where M3 represents a hydrogen atom, an acetyl group, or a siloxane group shown by the formula (2).Type: ApplicationFiled: April 26, 2017Publication date: July 4, 2019Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki KONISHI, Chihiro HAYAKAWA
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Publication number: 20190099333Abstract: A stick-shaped cosmetic product including (a) 0.1 to 4 mass % of at least one selected from a partially cross-linked polyether modified silicone and a partially cross-linked polyglycerin modified silicone, (b) 1 to 10 mass% of wax, and (c) 30 mass % or more of an aqueous component.Type: ApplicationFiled: March 7, 2017Publication date: April 4, 2019Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki KONISHI, Chihiro HAYAKAWA
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Publication number: 20180265642Abstract: An organic group-modified organosilicon resin having the average compositional formula (1), which is solid or liquid at 25° C., is suited for use in cosmetics. The resin is able to form an emulsion having a pleasant feel on use, a high internal water phase, and stability over time. In formula (1), a, b, c, d, e, and fare numbers: 0?a?400, 0<b?200, 0?c?400, 0?d?320, 0?e?320, 0<f?1,000, and 0.5?(a+b+c)/f?1.5.Type: ApplicationFiled: March 16, 2018Publication date: September 20, 2018Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Takuya ABE, Masayuki KONISHI, Chihiro HAYAKAWA, Masanao KAMEI
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Publication number: 20180133141Abstract: Provided is a cosmetic composition formed from a silicone-branched polyglycerol-modified silicone, of which the weight-average molecular weight, in terms of polystyrene, does not exceed 10,000 according to gel permeation chromatography.Type: ApplicationFiled: April 25, 2016Publication date: May 17, 2018Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki KONISHI, Chihiro HAYAKAWA, Akiko MIZUNO
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Publication number: 20180133144Abstract: One of the purposes of the present invention is to provide a cosmetic composition having an excellent adhesion. Specifically, the purpose of the present invention is to provide a cosmetic composition which provides an effect of making eyelashes longer and provides natural gloss on eyelashes without blending fibers. The present invention provides a cosmetic composition comprising a silicone-modified polysaccharide and an acryl-silicone graft copolymer. Further, the present invention provides a hair cosmetic composition, in particular a eyelash cosmetic composition.Type: ApplicationFiled: June 1, 2016Publication date: May 17, 2018Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki KONISHI, Chihiro HAYAKAWA
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Patent number: 9956159Abstract: Provided is an oil-based cosmetic comprising a siliconized polysaccharide compound, silicone emulsifier, organic modified clay mineral, carbonic acid ester, and wax. According to the present invention, a spinnable oil-based composition having exceedingly excellent adherability can be obtained by using a specific siliconized polysaccharide compound, silicone emulsifier, organic modified clay mineral, carbon dioxide ester, and wax, and if this composition is used in an eyelash cosmetic material, it is possible to obtain an eyelash cosmetic material that has excellent adherability, has an excellent long-lash effect without adding fibers, and is capable of imparting a natural finished look.Type: GrantFiled: May 1, 2014Date of Patent: May 1, 2018Assignee: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Masayuki Konishi, Chihiro Hayakawa