发明授权
US5747619A Water-soluble, carboxyl-containing copolymers, the preparation thereof
and the use thereof as scale inhibitor
失效
水溶性,含羧基的共聚物,其制备方法及其作为防垢剂的用途
- 专利标题: Water-soluble, carboxyl-containing copolymers, the preparation thereof and the use thereof as scale inhibitor
- 专利标题(中): 水溶性,含羧基的共聚物,其制备方法及其作为防垢剂的用途
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申请号: US596141申请日: 1996-02-20
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公开(公告)号: US5747619A公开(公告)日: 1998-05-05
- 发明人: Walter Denzinger , Heinrich Hartmann , Birgit Potthoff-Karl , Karl-Heinz Buechner , Marc Heider , Hans-Juergen Raubenheimer
- 申请人: Walter Denzinger , Heinrich Hartmann , Birgit Potthoff-Karl , Karl-Heinz Buechner , Marc Heider , Hans-Juergen Raubenheimer
- 申请人地址: DEX Ludwigshafen
- 专利权人: BASF Aktiengesellschaft
- 当前专利权人: BASF Aktiengesellschaft
- 当前专利权人地址: DEX Ludwigshafen
- 优先权: DEX4328817.0 19930827
- 主分类号: C02F1/04
- IPC分类号: C02F1/04 ; C02F5/10 ; C08F8/00 ; C08F16/16 ; C08F210/00 ; C08F212/00 ; C08F216/14 ; C08F218/02 ; C08F218/06 ; C08F220/00 ; C08F220/04 ; C08F220/08 ; C08F222/06 ; C09K8/528 ; C08F220/02 ; C08F220/06 ; C08F216/12 ; C08F218/04 ; C08F212/06
摘要:
Water-soluble copolymerizates are disclosed containing carboxyl groups, and also containing the following components incorporated by polymerization: (a) 30 to 80 mol % monoethylenically unsaturated C.sub.3 -C.sub.8 carboxylic acids, anhydrides thereof and/or water-soluble salts thereof; (b) 10 to 50 mol % C.sub.2 -C.sub.8 olefines, styrene, alkyl styrene, C.sub.1 -C.sub.10 alkyl vinyl ethers and/or vinyl esters of saturated C.sub.1 -C.sub.10 monocarboxylic acids; and (c) 0.01 to 20 mol % vinyl ethers and/or allyl ethers of alkoxylated C.sub.1 -C.sub.30 alcohols. The copolymerizates in question have a K-value of at least 8 (determined after H. Fikentscher). Also disclosed are methods of producing the water-soluble copolymerizates by copolymerization of the monomers in the presence of radical-forming polymerization initiators, and the use of the polymerizates as scale inhibitors.
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