公开(公告)号：AT540062T

公开(公告)日：2012-01-15

申请号：AT08717068

申请日：2008-02-25

Applicant: BASF SE

Inventor： KOU HUIGUANG ,  LIU YANFEI

IPC: C08F290/06 ,  C08F8/00 ,  C09B67/00 ,  C09D17/00 ,  C09K23/00 ,  C09K23/52

Abstract: The invention relates to a liquid dispersant based on polyamine-graft-polyacrylate blend, its preparation and its use in solvent borne systems, especially to a polyamine-g-polyacrylate grafted copolymer blend of the general formula (1) or a mixture of formula (1) and YT-(A1,A2)-Y1 wherein T is a polyamine or polyimine, A1 is a bridging bond which is selected from amide or amide, A2 is a —N—C— bridging bond, Y is an acrylate residue of the general formula (2), wherein, R1 and R2 are, independently, hydrogen or C1-20alkyl, aryl, heteroaryl, substituted aryl. n is a number of 1-1000, wherein the polyamine-g-polyacrylate grafted copolymer blend has an average molecular weight of 50 000 g/mol to 150 000 g/mol and a polydispersity Mw/Mn is greater than 3.

公开(公告)号：AT547452T

公开(公告)日：2012-03-15

申请号：AT07727030

申请日：2007-03-19

Applicant: BASF SE

Inventor： LIU YANFEI ,  PIRRUNG FRANK OLIVER HEINRICH ,  YU HAIYANG ,  KOU HUIGUANG

IPC: C08G73/02 ,  C09K23/00

Abstract: This invention refers to a novel process for the synthesis of polyethylene imine (PEI)-based pigment dispersants characterized by a “grafting from” approach, allowing the manufacture of solvent based dispersant systems. The polyethylene imine (PEI)-based pigment dispersant can be presented by the formula (I) X-(T)m-P-(T)n-H wherein P is a polyethyleneimine (PEI) back-bone; T is a residue —CO-A-O— wherein A is C2-C12 alkylene optionally substituted with C1-C6 alkyl with the proviso that each linkage between P and T is an amide bond and each linkage between X and T is an ester bond, X is a modifier or terminator residue R—CO— wherein R is a linear or branched, saturated or unsaturated alkanecarboxylic acids having from 1 to 22 carbon atoms or an unsaturated fatty acid residue or a hydroxycarboxylic residue or a polyester residue obtained from polycondensation of hydroxycarboxylic acids, or an acid terminated polyether; n, m independently are a number from 1 to 100.