Exxonmobil Chemical Patents Inc.

Mark K Davis

Ching-Tai Lue

Wesley R Mariott

Yong Yang

Alan Anthony Galuska

Phuong Anh Cao

Mosha H Zhao

Carlos R Lopez-Barron

Daniel P Zilker

A method for increasing the melt strength of a polyolefin polymer composition is provided. The method includes mixing a first polyolefin composition derived from at least one olefin polymerization catalyst (a) and at least one olefin polymerization catalyst (b) with a second polyolefin composition derived from the at least one olefin polymerization catalyst (b) or from at least one olefin polymerization catalyst (c), and obtaining the polyolefin polymer composition.

Methods for making polyolefin polymer compositions

Disclosed is an article comprising polymers and copolymers selected from the group consisting of poly(vinylbiphenyl), poly(vinylcyclohexylstyrene), substituted versions thereof, and blends thereof, the polymer or copolymer having a weight average molecular weight (Mw) of at least 100 kg/mole and a glass transition temperature (Tg) of at least 100&#xb0; C. The polymers are desirably processed in the melted state at a temperature of at least 150&#xb0; C. to impart orientation and extensional strain hardening.

Poly(vinylbiphenyl) and poly(vinylcyclohexylstyrene) polymers and articles therefrom

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Humble, TX, United States of America

Mark K Davis