Exxonmobil Chemical Patents Inc.

Sebastian Vasquez

Sudhin Datta

Andy Haishung Tsou

Hamidreza Khakdaman

Ron Walker

Krishnan Anantha Narayana Iyer

Antonios K Doufas

Rhutesh K Shah

Feng Li

Kimari T M Slaughter

This invention relates to a thermoplastic vulcanizate having excellent elongation comprising an isotactic polypropylene matrix phase in which a cross-linked ethylene-propylene-diene terpolymer (EPDM) is dispersed, the vulcanizate comprising the reaction product of:

Compatibilized thermoplastic vulcanizate compositions

Disclosed is the preparation of thermoplastic vulcanizates with reduced crosslinked rubber dispersion sizes and dispersity. The thermoplastic vulcanizates include a polypropylene matrix phase in which cross-linked rubber particles are dispersed. The thermoplastic vulcanizates include the reaction product of a mixture that includes at least 10 wt % of isotactic polypropylene at least 30 wt % of an amorphous propylene-ethylene-diene terpolymer containing at least 60 wt % propylene-derived units and less than or equal to 25 wt % of ethylene-derived units; at least 10 wt % of a diluent and at least 0.015 wt % of at least one curative. The mixture is preferably formed without adding an ethylene-propylene-diene terpolymer.

Thermoplastic vulcanizates and compositions therefrom

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Houston, TX, United States of America

Sebastian Vasquez