公开(公告)号：ZA9003604B

公开(公告)日：1992-01-29

申请号：ZA9003604

申请日：1990-05-11

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  WALTER DENZINGER ,  HARTMANN HEINRICH ,  HEINRICH HARTMANN ,  GOUSETIS CHARALAMPOS ,  CHARALAMPOS GOUSETIS ,  GOECKEL ULRICH ,  ULRICH GOECKEL ,  RULAND ALFRED ,  ALFRED RULAND

IPC: C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F20/02 ,  C08F26/06 ,  C08F220/04 ,  C08F220/06 ,  C08F222/02 ,  C08F226/06 ,  C02F ,  C08F

CPC classification number: C02F5/12

公开(公告)号：ZA903604B

公开(公告)日：1992-01-29

申请号：ZA903604

申请日：1990-05-11

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  WALTER DENZINGER ,  HARTMANN HEINRICH ,  HEINRICH HARTMANN ,  GOUSETIS CHARALAMPOS ,  CHARALAMPOS GOUSETIS ,  GOECKEL ULRICH ,  ULRICH GOECKEL ,  RULAND ALFRED ,  ALFRED RULAND

IPC: C02F1/00 ,  C02F5/00 ,  C02F5/08 ,  C02F5/10 ,  C02F5/12 ,  C02F5/14 ,  C08F20/02 ,  C08F26/06 ,  C08F220/04 ,  C08F220/06 ,  C08F222/02 ,  C08F226/06 ,  C02F ,  C08F

Abstract: PCT No. PCT/EP90/00752 Sec. 371 Date Nov. 1, 1991 Sec. 102(e) Date Nov. 1, 1991 PCT Filed May 10, 1990 PCT Pub. No. WO90/14314 PCT Pub. Date Nov. 29, 1990.Water-soluble copolymers which contain, polymerized in, as characteristic monomers (a) 99 to 50% by weight of monoethylenically unsaturated carboxylic acids with 3 to 8 carbon atoms or their salts and (b) 1 to 50% by weight of N-vinylimidazole or substituted N-vinylimidazoles, their salts or products of quaternization and which have K values of from 10 to 50 are used for water treatment to reduce deposits of scale and sludge in water-conveying systems.