发明授权
US4146492A Lubricant compositions which exhibit low degree of haze and methods of preparing same 失效
显示低雾度的润滑剂组合物及其制备方法

Lubricant compositions which exhibit low degree of haze and methods of
preparing same
摘要:
A pour depressant polyalkylacrylate comprising an interpolymer of (A) C.sub.1 -C.sub.15 alkylacrylate and (B) C.sub.16 -C.sub.22 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 comprising 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 hydrocarbon lubricating oil with a minor amount of the interpolymeric polyalkylacrylate and ethylene-propylene copolymer.
公开/授权文献
信息查询
0/0