Patent ID: 6867171

Claim:
A low molecular weight branched alkenyl succinic acid derivative having the formula: wherein X and X′ are independently selected from the group consisting of: —OH; —OR 1 , wherein R 1 is alkyl of 1 to 8 carbon atoms; —NH 2 ; —Cl; —Br; and —OM+, wherein M+ is the equivalent of at least one of a metal, ammonium or alkyl ammonium cation, wherein the alkyl group has 1 to 8 carbon atoms; and X and X′ when taken together are —O— or —NH——; R is a polyisobutenyl group or a mixture of low molecular weight polyisobutenyl groups having from about 8 to about 32 carbon atoms, derived from a polyisobutene having at least 50% of the methylvinylidene isomer plus tri-substituted isomer.