Patent ID: 7514393
Filing Date: 2009-04-07
Classification: C07C,C08F,C10M,C10N,Y02P

Abstract:
1. A method of making a graft polyalkene dispersant which is a graft reaction product of an ethylenically unsaturated, oxygen- and nitrogen-containing, aliphatic or aromatic reaction product grafted on a polyalkene backbone, the method comprising the steps of (1) reacting an amine and an acylating agent having at least one point of ethylenic unsaturation to form a reaction product, wherein the amine is selected from the group consisting of primary amines and secondary amines, and (2) grafting at least a portion of the reaction product onto a polyalkene backbone having a number average molecular weight of from about 300 to about 10,000 to form a grafted polyalkene, wherein the molar proportion of the grafted portion of the reaction product to the polyalkene backbone is at least about 0.5:1.