Abstract: Provided is a water-soluble resin which gives a conditioning effect when it is used in a hair cosmetic material containing an anionic surfactant, or the like. A water-soluble resin having a structure corresponding to a copolymer of a monomer mixture containing a vinylic monomer (A) having a hydroxyl group and an amido bond, and a vinylic monomer (B) having a cationic group.

Abstract: Provided is a water-soluble resin which gives a conditioning effect when it is used in a hair cosmetic material containing an anionic surfactant, or the like. A water-soluble resin having a structure corresponding to a copolymer of a monomer mixture containing a vinylic monomer (A) having a hydroxyl group and an amido bond, and a vinylic monomer (B) having a cationic group.

Abstract: In order to provide a radiation-curable composition which exhibits corrosion proof while maintaining mechanical properties and preservation stability and an optical recording medium using the composition, the radiation-curable composition for an optical recording medium comprises a urethane (meth)acrylate compound (A) and a compound (C) containing one or more epoxy groups, and has an acid content of 1.0×10?4 eq/g or less.

Abstract: Provided is a water-soluble resin which gives a conditioning effect when it is used in a hair cosmetic material containing an anionic surfactant, or the like. A water-soluble resin having a structure corresponding to a copolymer of a monomer mixture containing a vinylic monomer (A) having a hydroxyl group and an amido bond, and a vinylic monomer (B) having a cationic group.

Abstract: The present invention discloses a cosmetic polymer composition containing a straight-chain block copolymer, where the copolymer having a unit derived from a compound having an ethylenic unsaturated bond, having a number-average molecular weight of 1.0×103 to 1.0×106, and having at least two or more glass transition points or melting points; a hair cosmetic polymer composition containing a copolymer a copolymer capable of forming a film having a Young's modulus of 50 MPa or larger and a fracture-point elongation of 100% or larger, and dispersible into water and/or alcohol; and a cosmetic material containing these compositions.

Abstract: A polymer having a weight-average molecular weight of 5.0×103 to 1.0×107 and comprising a repeating unit represented by formula (I) below: wherein R1 denotes a hydrogen atom or a hydrocarbon group, R2 denotes a hydrogen atom or a methyl group, X denotes a bivalent connecting group, m denotes 0 or 1, and the guanidino group may form an acid-addition salt is disclosed.

Abstract: The present invention discloses a cosmetic polymer composition containing a straight-chain block copolymer, where the copolymer having a unit derived from a compound having an ethylenic unsaturated bond, having a number-average molecular weight of 1.0×103 to 1.0×106, and having at least two or more glass transition points or melting points; a hair cosmetic polymer composition containing a copolymer a copolymer capable of forming a film having a Young's modulus of 50 MPa or larger and a fracture-point elongation of 100% or larger, and dispersible into water and/or alcohol; and a cosmetic material containing these compositions.

Abstract: The invention provides a nail-care polymer with great adhesion to nail, good surface smoothness and gloss and high coating durability for use in a nail-care product.

Abstract: A cosmetic-use polymer having a weight average molecular weight of 5.0·103-1.

Abstract: A hair cosmetic composition having an excellent hair setting property, and which imparts to hair good flexibility and a good finish feeling. The hair cosmetic composition comprises (a) a water-soluble amine-oxide-containing polymer having a weight-average molecular weight of 10,000 to 500,000 and (b) a water-soluble polymer selected from the group consisting of nonionic, cationic, anionic and amphoteric polymers. The weight ratio of component (a) to component (b) falls within a range of from 1:10 to 10:1. Components (a) and (b) are incorporated in a total amount of from 0.1 to 10 wt. % based on the hair cosmetic composition.

Abstract: A hair cosmetic composition comprising an amine-oxide-containing water-soluble resin having a weight-average molecular weight of 5,000 to 1,000,000. The hair cosmetic composition of the present invention has excellent setting force, conditioning effects and hair-washing property and being free from stickiness.

Abstract: A hair cosmetic composition containing a graft copolymer or an alternating block copolymer, each of which comprises a first unit containing a polysiloxane group and a second unit containing a polymer of unsaturated monomers is provided. The first and second units are linked by sulfide linkage. The hair cosmetic composition provides hair with softness, luster, combing smoothness, styling ease, enhanced volume, and has good hairstyle retainability and damage-restoring characteristics.