Patent ID: 6211302
Filing Date: 2001-04-03
Classification: C08G,C08K,C08L,Y10T

Abstract:
A process of preparing a coupled polymer comprising heating an admixture containing (1) at least one interpolymer of an alpha olefin and vinyl aromatic monomer and (2) a coupling amount of 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 about 80 weight percent of the poly(sulfonyl azide) and sufficient to result in a coupled polymer, such that the coupled polymer has a low shear viscosity at 0.1 rad/sec as measured by DMS at least about 5 percent higher compared with the starting material polymer and has less than about 2 weight percent gel as measured by ASTM D 2765-Procedure A.