Ethylene-hydrocarbon copolymeric viscosity improvers containing

Details Ethylene-hydrocarbon copolymeric viscosity improvers containing Ethylene-hydrocarbon copolymeric viscosity improvers containing

1977-03-30

1978-08-29

Sneed, Helen M. S.

Compositions

Electrolytes for electrical devices

252 427, 252 59, C10M 132, C10M 326, C10M 520, C10M 730

Patent

active

041102355

ABSTRACT:
The color and viscosity stability of copolymeric .alpha.-olefin viscosity index improvers and of oils containing same are improved by the incorporation therein of minor amounts of N,N'-bis(2-hydroxy-5-alkylbenzyl).alpha.-.OMEGA.-diaminoethane wherein the alkyl group is a C.sub.4 to C.sub.30 alkyl group and the basic metal salts thereof.

REFERENCES:
patent: 2725358 (1955-11-01), Kluge et al.
patent: 3368972 (1968-02-01), Otto
patent: 3429812 (1969-02-01), Kivelevich et al.
patent: 3472773 (1969-10-01), Holst et al.
patent: 3522180 (1970-07-01), Sweeney et al.
patent: 3539633 (1970-10-01), Piasek et al.
patent: 3551336 (1970-12-01), Jacobsson et al.
patent: 3598738 (1971-08-01), Biswell et al.
patent: 3634247 (1972-01-01), Dupus et al.

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