High melt strength polymers and method of making same

USRE43004E1 · kind E1 · reissue

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Alexander W. Degroot · Lake Jackson, US
• James C. Stevens · Richmond, US
• Sylvie Desjardins · Lake Jackson, US
• Jeffrey D. Weinhold · Lake Jackson, US
• Edmund M. Carnahan · Fresno, US
• David T. Gillespie · Pearland, US
• Daniel D. VanderLende · Sugar Land, US

Key dates

• Filing date: Oct 23, 2009
• Grant date: Dec 6, 2011
• Expiry date: Oct 23, 2029

Classification

• Technology area (CPC —): General

Abstract

A polymer composition that has a backbone chain; and a plurality of long chain branches connected to the backbone is described. The polymer composition also has a value of 2g′LCB-1g′LCB g′2-g′1that is less than about 0.22, where 1g′LCB g′2is the long chain branching index for a fraction of the composition having a Mw of 100,000 and 2g′LCB g′1is the long chain branching index for a fraction of the composition having a Mw of 500,000.