公开(公告)号：DE4337481A1

公开(公告)日：1995-05-04

申请号：DE4337481

申请日：1993-11-03

Applicant: BASF AG

Inventor： KEMPTER FRITZ ERDMANN DR ,  REICH WOLFGANG DR ,  JAEGER ULRICH DR ,  ECKHARD KORONA DIPL ING

IPC: C08J3/24 ,  C08F2/02 ,  C08F2/06 ,  C08F8/00 ,  C08F20/10 ,  C08F220/18 ,  C08L101/00 ,  C09D5/03 ,  C09D5/46 ,  C09D133/04 ,  C08F220/00 ,  C08J3/28 ,  C09D133/00 ,  B05D1/06 ,  B05D3/06

Abstract: Free-radical-crosslinkable copolymers having a number average molecular weight of from 1500 to 6000 and a molecular weight distribution corresponding to a polydispersity of from 1 to 4.0, obtainable by polymer-analogous reaction of A) a copolymer (A) comprising a1) from 50 to 85 mol % of a monomer (a1) containing the methacrylic acid structural unit and a2) from 15 to 50 mol % of another free-radical-polymerising monomer (a2), where a3) from 5 to 50 mol % of the total amount of the monomers (a1) and (a2) are monomers (a3) carrying functional groups which are capable of a condensation or addition reaction, obtainable by a free-radical bulk or solution polymerisation at from 140 to 210 DEG C and a mean residence time of from 2 to 90 min, with B) an olefinically unsaturated monomer (B) carrying a functional group which is complementary to that of the monomers (a3). The free-radical-crosslinkable copolymers are used as binders for powder coatings (paints).