Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1980-01-16
1983-09-27
Barr, Josephine
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
252389A, 252390, 252391, 252392, 422 15, 422 16, 422 17, 106 1412, 106 1413, 106 1415, 210749, C02F 510
Patent
active
044068115
ABSTRACT:
A composition and method for controlling corrosion in aqueous systems with multiple metallurgies such as industrial cooling equipment is disclosed. The composition generally includes: (1) a triazole chosen from the group consisting of tolyltriazole and benzotriazole, (2) an aliphatic mono- or di-carboxylic acid having from 8-38 carbon atoms that is capable of controlling corrosion of mild steel, and (3) a nonionic wetting agent. In an alternate embodiment, the composition also includes a scale inhibitor chosen from the group consisting of polyol esters, 1-hydroxyethylidene-1,1-diphosphonic acid, amino tri(methylene phosphonic acid), and 2-phosphono-butane-tricarboxylic acid-1,2,4. The method of the invention entails the use of the above compositions in aqueous systems at dosage levels of at least 10 ppm.
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patent: 4101441 (1978-07-01), Hwa et al.
patent: 4138353 (1979-02-01), Lipinski
patent: 4149969 (1979-04-01), Robitaille et al.
patent: 4176059 (1979-11-01), Suzuki
patent: 4219433 (1980-08-01), Manabe et al.
"The Wonderful World of Pluronics Polyols".
Christensen Ronald
Gelazis Audrone
Barr Josephine
Nalco Chemical Company
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