Novel VI improver, dispersant, and anti-oxidant additive and lub

Details Novel VI improver, dispersant, and anti-oxidant additive and lub Novel VI improver, dispersant, and anti-oxidant additive and lub

1988-03-24

1989-09-05

Dixon, Jr., William R.

Compositions

Electrolytes for electrical devices

252 515A, 585 18, 585379, 525232, C10M10556

Patent

active

048636231

ABSTRACT:
An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 -C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 -C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene having a average molecular weight ranging from about 5000 to 500,000 which has been reacted with at least one olefinic carboxylic acid acylating agent to form one or more acylating reaction intermediates characterized by having a carboxylic acid acylating function within their structure and reacting said reaction intermediate with an amino-aromatic polyamine compound from the group consisting of an N-arylphenylenediamine, an aminothiazole, an aminocarbazole, an aminoindole, an aminopyrrole, an amino-indazolinone, an aminomercaptotriazole, and an aminoperimidine to form said graft and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.

REFERENCES:
patent: 4320019 (1982-03-01), Hayashi
patent: 4517104 (1985-05-01), Bloch et al.
patent: 4632769 (1986-12-01), Gutierrez et al.
patent: 4659491 (1987-04-01), Valkovich et al.
patent: 4698169 (1987-10-01), Andress et al.
patent: 4735736 (1988-04-01), Chung
patent: 4738797 (1988-04-01), Halpern et al.

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