One-step process for the preparation of alkenyl succinic...

Details One-step process for the preparation of alkenyl succinic... One-step process for the preparation of alkenyl succinic...

C - Chemistry, Metallurgy

08

F

C08F 255/00 (2006.01) C08F 255/02 (2006.01) C08F 255/10 (2006.01)

Patent

CA 2119010

2119010 9402523 PCTABS00030 A process for the preparation of an alkenyl-substituted succinic anhydride wherein the alkenyl substituent has a number average molecular weight of from about 500 to 5000 and the average number of succinic groups per alkenyl group is greater than 1.2 which comprises reacting a polyolefin having an alkylvinylidene isomer content of less than about 10 percent and a number average molecular weight of about 500 to 5000 with maleic anhydride in the presence of a free radical initiator at a temperature in the range of about 80 ·C to 200 ·C for a period of less than 20 hours, wherein the molar ratio of maleic anhydride to polyolefin is about 1.0:1 to 9:1, and wherein the half-life of the decomposition of the free radical initiator is about 5 minutes to 10 hours at the reaction temperature.

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