Abstract: A solid detergent composition comprising a cationic polymer (A) and an anionic surfactant (B), wherein the cationic polymer (A) and the anionic surfactant (B) satisfy the following requirement I and requirement II: Requirement I: a transmittance of a mixed liquid 1 obtained by mixing the cationic polymer (A), the anionic surfactant (B), and water at a weight ratio of 0.5:12:87.5 to light having a wavelength of 655 nm (optical path length: 1 cm, 25° C.) is 95% or more, and Requirement II: a transmittance of a diluted liquid obtained by mixing the mixed liquid 1 and water at a weight ratio of 1:4 to light having a wavelength of 655 nm (optical path length: 1 cm, 25° C.) is 90% 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: A detergent composition, which imparts smoothness in finger-combing in rinsing after washing and smoothness, silky texture and non-stiffness to hair after application and drying is provided. The detergent composition comprises a copolymer having no cross-linking units and comprising constituting units corresponding to a cationic vinyl monomer (A) and constituting units corresponding to a specific vinyl monomer (B) having a hydroxyl group or an amide group, wherein the proportion of the constituting units corresponding to the cationic vinyl monomer (A) is from 25 to 45 mol % based on the entire constituting units constituting the copolymer.

Abstract: A detergent composition, which imparts smoothness in finger-combing in rinsing after washing and smoothness, silky texture and non-stiffness to hair after application and drying is provided. The detergent composition comprises a copolymer having no cross-linking units and comprising constituting units corresponding to a cationic vinyl monomer (A) and constituting units corresponding to a specific vinyl monomer (B) having a hydroxyl group or an amide group, wherein the proportion of the constituting units corresponding to the cationic vinyl monomer (A) is from 25 to 45 mol % based on the entire constituting units constituting the copolymer.

Abstract: A detergent composition containing a copolymer and a surfactant is provided. The copolymer comprises a cationic vinyl monomer (A) a specific vinyl monomer (B) having a hydroxyl group or an amide group, or 2,3-dihydroxypropyl(meth)acrylate wherein the proportion of the cationic vinyl monomer (A) is from 25 to 45 mol % of the copolymer. A method for cleaning an object by washing the object with the detergent composition is also provided.

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: A copolymer capable of forming detergent compositions which are excellent in the smoothness in passing fingers through the hair in rinsing after washing and in the smoothness, nongreasiness, and nonstiffness of the hair after drying; and detergent compositions containing the copolymer. A copolymer comprising constituent units of a cationic vinyl monomer (A) and constituent units of a specific vinyl monomer (B) having a hydroxyl group or an amide linkage, wherein the content of the constituent units of the monomer (A) is 25 to 45% by mole based on the whole of the constituent units of the copolymer; and detergent compositions containing the copolymer.

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.