C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
253/105, 253/113
C08K 5/34 (2006.01) C08F 8/32 (2006.01) C08L 23/08 (2006.01) C08L 47/00 (2006.01) C10L 1/234 (2006.01) C10M 133/12 (2006.01) C10M 143/02 (2006.01) C10M 143/08 (2006.01) C10M 147/04 (2006.01) C10M 149/06 (2006.01) C10M 149/10 (2006.01)
Patent
CA 2031261
MULTIFUNCTIONAL VISCOSITY INDEX IMPROVERS HAVING DISPERSANT AND ANTIOXIDANT PROPERTIES AND LUBRICATING OIL COMPOSITION CONTAINING SAME (D# 79,306 ABSTRACT OF THE DISCLOSURE An additive, a lubricating oil composition which incorporates the additive, and a concentrate for a lubricating oil are disclosed. The additive includes (a) a halogenated copolymer prepared from ethylene, a C3 to C18 alpha-olefin, preferably a C3 to C8, or mixtures thereof, and at least one halogen, and (b) an amino-aromatic polyamine compound. Most preferably, the copolymer is prepared from ethylene, propylene and at least one polyene. The lubricating oil composition comprises a major amount of an oil of lubricating viscosity and a minor amount, effective to impart viscosity index improvement, dispersancy and antioxidant properties to the oil, of the prescribed additive. The concentrate comprises a diluent oil of lubricating oil viscosity and from about 1 to about 50 weight percent of the prescribed additive based on the total weight of the concentrate. D#79,306
Herbstman Sheldon
Nalesnik Theodore Eugene
Ethyl Additives Corporation
Smart & Biggar
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