Compositions – Etching or brightening compositions
Patent
1981-05-19
1983-05-03
Willis, Jr., P. E.
Compositions
Etching or brightening compositions
252 493, 252 56R, 252 56D, 252 77, C09K 500
Patent
active
043820093
ABSTRACT:
A hydraulic fluid comprising an oil and at least one butadine derivative selected from the group consisting of .alpha.,.omega.-polybutadienedicarboxylic acid, maleinized polybutadiene, hydrogenated .alpha.,.omega.-polybutadienedicarboxylic acid, and hydrogenated and maleinized polybutadiene.
REFERENCES:
patent: 2422278 (1947-06-01), Young et al.
patent: 3231498 (1966-01-01), de Vries
patent: 3288714 (1966-11-01), Osuch
patent: 3329613 (1967-07-01), Fischer et al.
patent: 4077893 (1978-03-01), Kiovsky
patent: 4082817 (1978-04-01), Imaizumi et al.
patent: 4161452 (1979-07-01), Stambaugh et al.
patent: 4225447 (1980-09-01), Law et al.
Matsumura Oil Research Corporation
Willis, Jr. P. E.
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