Abstract: An object of the present invention is to provide an aqueous dispersion for use in a cosmetic, which has both the flexibility and hair styling properties (hair set retention properties), and which allows for easily re-styling hair when the hair style once set has been disturbed; and a cosmetic including the same. In the above mentioned aqueous dispersion and the cosmetic, a polyurethane is used, which is obtainable from a polyol component including at least one type of a polyether polyol and a polyester polyol, and a polyvalent isocyanate component, wherein the polyol component includes: a polyether polyol containing as a major component a structural unit derived from a polyalkylene glycol having from 2 to 4 carbon atoms, and having a number average molecular weight of 400 or more and 4,000 or less; or a polyester polyol containing a structural unit derived from at least one type of dicarboxylic acid selected from the group consisting of phthalic acid, isophthalic acid and terephthalic acid.
Type:
Grant
Filed:
April 6, 2018
Date of Patent:
February 23, 2021
Assignee:
JAPAN COATING RESIN CORPORATION
Inventors:
Shinya Miyata, Eri Hatakeyama, Ryosuke Kawasaki, Aiko Takeda
Abstract: An object of the present invention is to provide an aqueous dispersion for use in a cosmetic, which has both the flexibility and hair styling properties (hair set retention properties), and which allows for easily re-styling hair when the hair style once set has been disturbed; and a cosmetic including the same. In the above mentioned aqueous dispersion and the cosmetic, a polyurethane is used, which is obtainable from a polyol component including at least one type of a polyether polyol and a polyester polyol, and a polyvalent isocyanate component, wherein the polyol component includes: a polyether polyol containing as a major component a structural unit derived from a polyalkylene glycol having from 2 to 4 carbon atoms, and having a number average molecular weight of 400 or more and 4,000 or less; or a polyester polyol containing a structural unit derived from at least one type of dicarboxylic acid selected from the group consisting of phthalic acid, isophthalic acid and terephthalic acid.
Type:
Application
Filed:
April 6, 2018
Publication date:
August 9, 2018
Applicant:
JAPAN COATING RESIN CORPORATION
Inventors:
Shinya MIYATA, Eri HATAKEYAMA, Ryosuke KAWASAKI, Aiko TAKEDA
Abstract: An object of the present invention is to provide an aqueous dispersion for use in a cosmetic, which has both the flexibility and hair styling properties (hair set retention properties), and which allows for easily re-styling hair when the hair style once set has been disturbed; and a cosmetic including the same. In the above mentioned aqueous dispersion and the cosmetic, a polyurethane is used, which is obtainable from a polyol component including at least one type of a polyether polyol and a polyester polyol, and a polyvalent isocyanate component, wherein the polyol component includes: a polyether polyol containing as a major component a structural unit derived from a polyalkylene glycol having from 2 to 4 carbon atoms, and having a number average molecular weight of 400 or more and 4,000 or less; or a polyester polyol containing a structural unit derived from at least one type of dicarboxylic acid selected from the group consisting of phthalic acid, isophthalic acid and terephthalic acid.
Type:
Grant
Filed:
August 5, 2014
Date of Patent:
May 22, 2018
Assignee:
JAPAN COATING RESIN CORPORATION
Inventors:
Shinya Miyata, Eri Hatakeyama, Ryosuke Kawasaki, Aiko Takeda
Abstract: The present invention relates to: a polymer particle in which a urethane resin (A1) and an acrylic polymer (B1) are included in a single particle, said polymer particle having a gel fraction of 10% or more as measured using N,N-dimethylformamide (DMF) as a solvent; a polymer particle in which a urethane resin (A2) having a sulfonic acid group and an acrylic polymer (B2) are included in a single particle, said polymer particle having a surface acid value of 0.1 to 19 mgKOH/g as measured by a potentiometric titration method; and a method for producing a polymer dispersion. According to the present invention, it becomes possible to provide: a polymer dispersion which has excellent polymerization stability and can have an excellent coating viscosity property and excellent storage stability when used in a coating material; a method for producing the polymer dispersion; and a polymer particle contained in the polymer dispersion.
Type:
Grant
Filed:
February 14, 2014
Date of Patent:
May 15, 2018
Assignees:
Mitsubishi Chemical Corporation, Japan Coating Resin Corporation
Abstract: A method for producing a polymer dispersion, by polymerizing a mixture X containing a urethane resin (A3), a monomer (b5) having two or more radically polymerizable groups, and a radically polymerizable monomer (b6) other than the monomer (b5), to obtain a dispersion containing a polymer P; and adding a pre-emulsion prepared by emulsifying and dispersing a radically polymerizable monomer mixture Y dropwise to the dispersion containing the polymer P and conducting polymerization, to obtain a dispersion containing a polymer Z, where a content of the urethane resin (A3) in the mixture X at the time of starting the reaction in the step (1) is from 25 to 95% by mass with respect to a total mass of the mixture X.
Type:
Application
Filed:
December 18, 2017
Publication date:
April 19, 2018
Applicants:
Mitsubishi Chemical Corporation, Japan Coating Resin Corporation
Abstract: An object of the present invention is to provide an aqueous dispersion for use in a cosmetic, which has both the flexibility and hair styling properties (hair set retention properties), and which allows for easily re-styling hair when the hair style once set has been disturbed; and a cosmetic including the same. In the above mentioned aqueous dispersion and the cosmetic, a polyurethane is used, which is obtainable from a polyol component including at least one type of a polyether polyol and a polyester polyol, and a polyvalent isocyanate component, wherein the polyol component includes: a polyether polyol containing as a major component a structural unit derived from a polyalkylene glycol having from 2 to 4 carbon atoms, and having a number average molecular weight of 400 or more and 4,000 or less; or a polyester polyol containing a structural unit derived from at least one type of dicarboxylic acid selected from the group consisting of phthalic acid, isophthalic acid and terephthalic acid.
Type:
Application
Filed:
August 5, 2014
Publication date:
June 23, 2016
Applicant:
JAPAN COATING RESIN CORPORATION
Inventors:
Shinya MIYATA, Eri HATAKEYAMA, Ryosuke KAWASAKI, Aiko TAKEDA
Abstract: The present invention relates to: a polymer particle in which a urethane resin (A1) and an acrylic polymer (B1) are included in a single particle, said polymer particle having a gel fraction of 10% or more as measured using N,N-dimethylformamide (DMF) as a solvent; a polymer particle in which a urethane resin (A2) having a sulfonic acid group and an acrylic polymer (B2) are included in a single particle, said polymer particle having a surface acid value of 0.1 to 19 mgKOH/g as measured by a potentiometric titration method; and a method for producing a polymer dispersion. According to the present invention, it becomes possible to provide: a polymer dispersion which has excellent polymerization stability and can have an excellent coating viscosity property and excellent storage stability when used in a coating material; a method for producing the polymer dispersion; and a polymer particle contained in the polymer dispersion.
Type:
Application
Filed:
February 14, 2014
Publication date:
December 31, 2015
Applicants:
Mitsubishi Rayon Co., Ltd., Japan Coating Resin Corporation