Exxonmobil Chemical Patents Inc.

Danica L Nguyen

Jo Ann M Canich

Peijun Jiang

Francis Charles Rix

Narayanaswami R Dharmarajan

George Rodriguez

Charles J Harlan

Rhutesh K Shah

Michael F McDonald, Jr

Florin Barsan

Aaron Sattler

Aakriti Jain

Compositions are provided which include blends of (A) branched and/or bimodal ethylene copolymers and (B) linear ethylene copolymers. The branched and/or bimodal ethylene copolymers may be produced using a dual metallocene catalyst system comprising two different metallocene catalysts: one capable of producing high Mooney-viscosity polymers and one suitable for producing polymers having at least a portion of vinyl terminations. The linear ethylene copolymers may be produced using a metallocene catalyst capable of producing high Mooney-viscosity polymers, which may be the same as such catalyst of the dual metallocene catalyst system. Processes for making such blends, including parallel and/or series polymerization processes, are also provided. The blends may have excellent cure properties suitable in curable rubber compound applications.

Ethylene copolymer blends for cross-linking applications

A method for making a polymer, having the steps of (a) polymerizing one or more monomers in the presence of a solvent and a catalyst to form a reaction product; (b) removing an effluent from the reaction product, where the effluent comprises an active catalyst and one or more unreacted monomers; (c) combining a quench, comprising carbon dioxide, with the effluent to form a quenched polymer stream, having a carboxyl metal complex; and (d) recovering a polymer from the quenched polymer stream.

Carbon dioxide as a catalyst quench agent in solution polymerization, and products made therefrom

Growing community of inventors

Houston, TX, United States of America

Danica L Nguyen