发明名称 |
SCALE INHIBITORS |
摘要 |
The invention relates to the inhibition of (poly)phosphate scale in aqueous syst ems involving the use of at least one copolymer comprising the following monomers in polymerized s form: (I) 50-08% by weight of one or more weak acids; (II) 2-50% by weight of one or more strong acids; (III) 0-30% by weight of one or more monoethylenically unsaturated C4-C8 dicarbo xylic acids; and (IV) 0-30% by weight of one or more monoethylenically unsaturated monomers polymerizable with (I), (II) and (III); wherein the total of monomers (I), (II), (III) and (IV) equals 100% by weight of copolymer. The invention is particularly suited to the inhibition of (poly)phosphate scale which occurs as a result of using low phosphate (STPP) containing detergent formulatio ns.
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申请公布号 |
CA2236605(A1) |
申请公布日期 |
1998.11.09 |
申请号 |
CA19982236605 |
申请日期 |
1998.04.30 |
申请人 |
ROHM AND HAAS COMPANY;ROHM AND HAAS COMPANY |
发明人 |
GAUTHIER, FRANCOIS;WEINSTEIN, BARRY;KEENAN, ANDREA;SHULMAN, JAN;DUCCINI, YVES |
分类号 |
C02F5/00;C02F5/10;C11D3/37;(IPC1-7):C11D3/37 |
主分类号 |
C02F5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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