Title:
カルボキシル基含有水溶性共重合体、その製造方法およびスケール抑制剤としてのその使用
Document Type and Number:
Japanese Patent JP3571343
Kind Code:
B2
Abstract:
PCT No. PCT/EP94/02721 Sec. 371 Date Feb. 20, 1996 Sec. 102(e) Date Feb. 20, 1996 PCT Filed Aug. 16, 1994 PCT Pub. No. WO95/06074 PCT Pub. Date Mar. 2, 1995Water-soluble copolymerizates are disclosed containing carboxyl groups, and also containing the following components incorporated by polymerization: (a) 30 to 80 mol % monoethylenically unsaturated C3-C8 carboxylic acids, anhydrides thereof and/or water-soluble salts thereof; (b) 10 to 50 mol % C2-C8 olefines, styrene, alkyl styrene, C1-C10 alkyl vinyl ethers and/or vinyl esters of saturated C1-C10 monocarboxylic acids; and (c) 0.01 to 20 mol % vinyl ethers and/or allyl ethers of alkoxylated C1-C30 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.
Inventors:
Denzinger, Walter
Hartmann, Heinrich
Pothof-Karl, Birgit
Buchner, Karl-Heinz
Marc, Haider
Laubenheimer, Hans-Jurgen
Hartmann, Heinrich
Pothof-Karl, Birgit
Buchner, Karl-Heinz
Marc, Haider
Laubenheimer, Hans-Jurgen
Application Number:
JP50732495A
Publication Date:
September 29, 2004
Filing Date:
August 16, 1994
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
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; (IPC1-7): C08F220/04; C02F5/10; C08F210/00; C08F212/00; C08F216/14; C08F218/06; C08F220/08
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Reinhard Einsel