Patent ID: 9079998
Filing Date: 2015-07-14
Classification: C08B,C08F,C08L,C09D

Abstract:
1. An aqueous dispersion (X) having hydrophilic side chains and hydrophobic side-chains, wherein the aqueous dispersion (X) is obtained by radical polymerization reaction of a radical polymerizable unsaturated monomer mixture (b1) in the presence of starch and/or modified starch (a) to obtain a reaction product, radical polymerization reaction of a radical polymerizable unsaturated monomer mixture (b2) in the presence of the reaction product to obtain an acrylic modified starch (A), and then dispersing the acrylic modified starch (A) in an aqueous medium, and the radical polymerizable unsaturated monomer mixture (b1) forms the hydrophobic side chains and the radical polymerizable unsaturated monomer mixture (b2) forms the hydrophilic side chains, the carboxyl group-containing radical polymerizable unsaturated monomer is selected from the group consisting of acrylic acid, methacrylic acid, crotonic acid, itaconic acid, maleic acid, fumaric acid, 2-carboxyethyl(meth)acrylate, 2-carboxypropyl(meth)acrylate, and 5-carboxypentyl(meth)acrylate, or is a combination thereof, the hydroxyl group-containing radical polymerizable unsaturated monomer is selected from the group consisting of 2-hydroxyethyl(meth)acrylate, 3-hydroxypropyl(meth)acrylate, 4-hydroxybutyl(meth)acrylate, (poly)ethyleneglycol mono(meth)acrylate, polypropyleneglycol mono(meth)acrylate, polybutyleneglycol mono(meth)acrylate, and a lactone-modified form of hydroxyl group-containing radical polymerizable unsaturated monomers thereof, or is a combination thereof, and