The University of Akron

Lyondellbasell Advanced Polymers Inc.

Ying Shi

Robert A Weiss

Mitra Yoonesi

Disclosed herein are high performance semi-aromatic polyamide compounds having improved performance indicators for various applications, including alkaline battery end cap seal assembly applications. In one preferred embodiment, the disclosure relates to compounds comprising a semi-aromatic polyamide component comprising recurring terephthalamide and/or isophthalamide units, an impact modifier component comprising a modified polyolefin elastomer, one or more synergistic blends of sterically hindered phenolic stabilizers and phosphonates and one or more relatively high molecular weight organic phosphite stabilizers, and a fine talc nucleating agent.

High performance polyamide compounds and uses thereof

A shape memory composition includes a high temperature ionomer having a glass transition temperature or a melting temperature of 100&#xb0; C. or greater and a modulus at room temperature of 1&#xd7;10Pa or greater, the high temperature ionomer including a polymer with ionic units either within the backbone of the polymer or pendant to the backbone or both. The shape memory composition includes crystalline or glassy domains of a low molecular weight non-polymeric compound dispersed in the high temperature ionomer and interacting the ionic units of the high temperature ionomer to form a secondary network characterized by being a reversible network in that it is compromised by the heating of the low molecular weight non-polymeric compound to change out of its crystalline or glassy phase.

Growing community of inventors

Akron, OH, United States of America

Ying Shi