Patent ID: 6512022
Filing Date: 2003-01-28
Classification: C08F,C08J,C09J,Y10S

Abstract:
A structured polyacrylate comprising one or more polyacrylate copolymers comprising at least one crosslinked region and at least one adjacent region which is ether a) crosslinked to a lesser extent than said at least one crosslinked region or b) not crosslinked, wherein the polyacrylate copolymers are copolymers of the following monomers:a1) acrylic acid and/or acrylic esters of the formula: CH2=CH(R1)(COOR2) wherein R1=H or CH3 and R2 is an alkyl chain having 1 to 20 carbon atoms; a2) olefinically unsaturated monomers containing one or more functional group; and a3) tert-butyl acrylate; wherein said copolymers are based on 70-99% by weight of monomer a1), 0-15% by weight of monomer a2), and 1-15% by weight of monomer a3), and all percents by weight are based on total weights of said copolymers.