Ethylene-hydrocarbon copolymeric viscosity improvers...

Details Ethylene-hydrocarbon copolymeric viscosity improvers... Ethylene-hydrocarbon copolymeric viscosity improvers...

C - Chemistry, Metallurgy

10

M

253/106, 31/73

C10M 163/00 (2006.01)

Patent

CA 1087158

ETHYLENE-HYDROCARBON COPOLYMERIC VISCOSITY IMPROVERS CONTAINING COLOR AND STABILITY IMPROVERS (D#74,661-F) ABSTRACT The color and viscosity stability of copolymeric ?-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)?-?-diaminoethane wherein the alkyl group is a C4 to C30 alkyl group and the basic metal salts thereof. I

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