Pour depressant polyalkylacrylate

Details Pour depressant polyalkylacrylate Pour depressant polyalkylacrylate

C - Chemistry, Metallurgy

08

F

253/115

C08F 220/12 (2006.01) C10M 145/14 (2006.01)

Patent

CA 1105443

ABSTRACT OF THE DISCLOSURE A pour depressant polyalkylacrylate comprising an interpolymer of (A) C1-C15 alkylacrylate and (B) C16-C22 alkylacrylate, said interpolymer having an average molecular weight of between about 1000 and 25,000, an A:B weight ratio of between about 90:10 and 50:50, an average alkyl side chain length between about 11 and 16 carbons, and prepared under neat conditions; a lubricating oil composition thereof com- prising a major amount of lubricating oil and between about 0.005 and 10 wt. % of the interpolymeric pour depressant and between about 0.5 and 30 wt. % of a viscosity index improving ethylene-propylene copolymer of a molecular weight between about 10,000 and 150,000, a propylene content of 20 to 70 mole % and polydispersity index of less than 5; and a method of improving component compatibility, pour depression, and viscosity index comprising admixing a major amount of hydro- carbon lubricating oil with a minor amount of the interpoly- meric polyalkylacrylate and ethylene-propylene copolymer. - I -

273796

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