Abstract: A copolymer without homopolymer has been prepared form methyl mcthacrylate, butylacrylate, acrylie acid and β-hydroxyethyl metacrylate. The molecular weight and the molecular weight distribution of the copolymer were determined by GPC.The water-solubilized acrylics was obtained by neutralizing 60% of the carboxyl groups of the copolymer, and its rheological behavior, dependence of apparent viscosity on the shear rate as well as on the solid content have been studied. The paint obtained by mixing the water-solubilized acrylics with solidifying agent hexamethoxymethyl melamine (20%) and acidic catalyst PTSA (0.5%) has a well-qualified property.

Key words: acrylics, copolymer, water-solubilized acrylics, rheological property, paint