Novel polyphosphate/azole compositions and the use thereof as co

Details Novel polyphosphate/azole compositions and the use thereof as co Novel polyphosphate/azole compositions and the use thereof as co

1990-10-15

1992-08-25

Kyle, Deborah L.

Compositions

Preservative agents

Anti-corrosion

25238961, 25238962, 252394, 252395, 422 15, 422 16, C23F 1114, C23F 1116

Patent

active

051416751

ABSTRACT:
A polyphosphate in combination with an azole such as in alkyl or alkoxy benzotriazole, mercaptobenzothiazole, tolyltriazole, benzotriazole, a substituted benzotriazole and/or 1-phenyl-5-mercaptotetrazole, is used to inhibit the corrosion of metallic surfaces, particularly copper surfaces, in contact with an aqueous system. Systems and compositions are also claimed.

REFERENCES:
patent: 3413227 (1968-11-01), Howard et al.
patent: 3502587 (1970-03-01), Stanford et al.
patent: 3751372 (1973-08-01), Zecher
patent: 3791855 (1974-02-01), Korpics
patent: 3803049 (1974-04-01), Korpics
patent: 3852213 (1974-12-01), Cooney
patent: 3985503 (1976-10-01), O'Neal, Jr.
patent: 4172032 (1979-10-01), Farley
patent: 4338209 (1982-07-01), Manabe et al.
patent: 4406811 (1988-05-01), Christensen et al.
patent: 4675158 (1987-06-01), Klindera
patent: 4744950 (1988-05-01), Hollander
patent: 4873139 (1989-10-01), Kinosky
Chemical Abstract 47253(m) vol. 95.
Ser. Nos. 348532 and 348521.

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