Aminated polymeric additives for fuels and lubricants

Details Aminated polymeric additives for fuels and lubricants Aminated polymeric additives for fuels and lubricants

C - Chemistry, Metallurgy

08

F

253/100, 44/19,

C08F 8/32 (2006.01) C10L 1/22 (2006.01) C10M 143/02 (2006.01) C10M 143/18 (2006.01)

Patent

CA 1072246

ABSTRACT OF THE DISCLOSURE Copolymers having a degree of crystallinity of 3 to 25 weight percent, comprising about 68 to 80 mole % ethylene and one or more C3 to C8 alpha-olefins, are mechanically degraded at elevated temperatures, in the presence of air or oxygen-containing gas, to form an oxygenated-degraded polymer, which is reacted with an amine compound. Preferably, the polymer is only partially reacted with an amine compound. Preferably, the polymers are useful as aludge dispersants for fuels and lubricants. When the aminated polymers have high molecular weight, they are also useful as viscosity-index improvers.

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