公开(公告)号：DE4446383A1

公开(公告)日：1995-07-20

申请号：DE4446383

申请日：1994-12-23

Applicant: BASF MAGNETICS GMBH

Inventor： BRODT GREGOR DR ,  LEHNER AUGUST ,  LINDNER ALFRED DR ,  GRAF HERMANN DR ,  BOBRICH MICHAEL DR ,  KRESS RIA DR ,  SCHNEIDER NORBERT ,  KOHL ALBERT ,  LOCH WERNER DR

IPC: C08G18/65 ,  C08F2/38 ,  C08F8/30 ,  C08F8/32 ,  C08G18/10 ,  C08G18/62 ,  C08G18/78 ,  C09D5/23 ,  C09D7/45 ,  C09D17/00 ,  C09D175/04 ,  C09K23/00 ,  C09K23/52 ,  G11B5/70 ,  G11B5/702 ,  C08G18/30 ,  C08L75/00 ,  B01F17/52 ,  C09D175/00

Abstract: Novel polymer compsns. (I), for use as dispersant resins, are obtd. by reacting a hydroxylated polymer (II) with a polyfunctional isocyanate (III). The amt. of NCO gps. is 1.2-3.0 mol. per mol. of OH gps. of (II). Then the prod. (IV) is reacted with ammonia or a cpd. (V) having an isocyanate-reactive amino function. (II) is obtd. from 80-100 mol.% of a 1-25 C alkyl ester of an alpha , beta -unsatd. carboxylic acid, 0-20 mol.% of a comonomer, tetrahydrofuran hydroperoxide (THFHPO) as polymerisation initiator and opt. another polymerisation initiator and/or regulator, such that most of the chains of (II) are hydroxy-terminated. The process of prepn. of (I) is claimed, as well as (I) per se.