Process for making polyalkenyl derivative of an unsaturated acid

Details Process for making polyalkenyl derivative of an unsaturated acid Process for making polyalkenyl derivative of an unsaturated acid

1998-09-16

2000-12-05

Killos, Paul J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

508118, 525181, 525183, 5253295, 560205, 562595, C08F 2200

Patent

active

061568503

ABSTRACT:
A polyalkenyl derivative of an unsaturated acidic reagent prepared by the process of reacting a polyalkene having a Mn of at least 300 with an unsaturated acidic reagent at elevated temperatures in the absence of a strong acid until at least 25% of the polyalkene is converted to a polyalkenyl derivative of an unsaturated acidic reagent, continuing the reaction of the polyalkene with an excess of the unsaturated acidic reagent at elevated temperatures in the presence of a strong acid to convert at least some of the unreacted polyalkene to additional polyalkenyl derivative of an unsaturated acidic reagent, and removing the unreacted unsaturated acidic reagent.

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