Cosmetic polymer composition and cosmetic
AssigneeMitsubishi Chemical Corporation
InventorsTomoaki HIWATASHI, Minako SHIBATA, Osamu NISHIZAWA, Masato ONOE, Yasuo KITANI
Life of this patent
Estimating the term…
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.
Claims32
A cosmetic polymer composition comprising a straight-chain block 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 two or more glass transition points or melting points,
- wherein the block copolymer comprises at least one block composed of a unit having a hydrophilic group which is at least any one selected from groups consisting of an anionic group consisting of carboxylic acid group, sulfonic acid group, phosphonic acid group and salts of these groups;
- a cationic group consisting of amino group (including a quaternary ammonium salt group), pyridyl group and salts of these groups, an amphoteric ionic group consisting of carboxybetaine group;
- and a semipolar group consisting of amine oxide group.
2-3. (canceled)
A hair cosmetic polymer composition comprising a copolymer capable of forming a film having a Young's modulus (measured according to JIS K7161 under a tensile speed of 20 mm/min) of 50 MPa or larger and a fracture-point elongation of 100% or larger, and dispersible into water and/or alcohol.
Dependencies are inferred from the claim text.