The Dow Chemical Company

Dow Global Technolgoies LLC

Che-l Kao

Thoi H Ho

Michael J Mullins

H Craig Silvis

Clark H Cummins

Michael E Rowland

Wendy D Hoenig

Coupled polymers are prepared by a process comprising heating an admixture containing (1) at least one polyolefin comprising ethylene and optionally at least one comonomer and (2) a coupling amount at least one poly(sulfonyl azide) to at least the decomposition temperature of the poly(sulfonyl azide) for a period sufficient for decomposition of at least 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer; particularly where the polyolefin is the product of polymerization of ethylene and optionally at least one other alpha-olefin in the presence of a single site catalyst.

Rheology modification of polymers prepared using metallocenes

High molecular weight polycarbonates are prepared by reacting a sterically hindered, substituted aromatic bischloroformate with an alkali metal hydroxide in the presence of a substituted pyridine.

Process for preparing aromatic polycarbonates

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Lake Jackson, TX, United States of America

Che-l Kao