Liquid purification or separation – Processes – Preventing – decreasing – or delaying precipitation,...
Patent
1989-01-12
1990-04-03
Hruskoci, Peter
Liquid purification or separation
Processes
Preventing, decreasing, or delaying precipitation,...
210701, 252181, 2523892, 25238952, 252396, 422 15, 422 17, C02F 514
Patent
active
049138227
ABSTRACT:
A method for inhibiting scale deposition and the corrosion of metal surfaces in a cooling water system.
It comprises a water soluble copolymer consisting of moities of acrylic acid and monohydroxylated alkyl allyl ether, a phosphonate compound, a water soluble zinc salt and, optionally, an azole compound, and/or a water soluble molybdate salt.
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patent: 4500693 (1985-02-01), Takehara et al.
patent: 4560481 (1985-12-01), Hollander
patent: 4659482 (1987-04-01), Chen
patent: 4717499 (1988-01-01), Chen
Chemical Abstract, 99:58708x, 1983.
Brown J. Michael
Chen Fu
Betz Laboratories Inc.
Hruskoci Peter
Ricci Alexander D.
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