Exxon Chemical Patents, Inc.

Richard S Auda

Donald A White

William M Davis

David Y Chung

Brenton G Jones

Hans G Woudboer

Lawrence W Flatley

Lawrence William Flatley, Jr

David T Ferrughelli

Multiple sequential chemical reactions on a polymeric feedstock are carried out in an extruder with multiple reaction zones. Each reaction zone has means for introduction of reagents, for mixing of reagents with polymer and for removal of by/co-products or unreacted reagents.

Multiple reaction process in melt processing equipment

Process for producing a functionalized thermoplastic polymer

Preparation of halothio-sulfonamide-modified terpolymers having a low degree of unsaturation is accomplished by preferably reacting N-chlorothio-sulfonamide with an ethylene-(alpha-olefin)-diene monomer terpolymer comprising, for example, 1,4- hexadiene and/or dicyclopentadiene, in the presence of a catalyst of the formula MAn, where A is an anion or mixture of anions of a weak acid, and M is a metal selected from copper, antimony, bismuth and tin and n is a number which corresponds to the oxidation state of M divided by the valence of said weak acid anion. The reaction is preferably carried out in a melt phase process. Additionally, metals such as zinc and iron can be used at low concentrations in a melt phase process or at short reaction times in a solution process. Mixtures of such modified terpolymers with highly unsaturated rubbery polymers and vulcanizates of such mixtures are particularly useful in pneumatic tire sidewalls.

Selective catalytic process for controlled modification of

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Westfield, NJ, United States of America

Richard S Auda