Patent ID: 6552129
Filing Date: 2003-04-22
Classification: C08G,C08K,C08L,Y10T

Abstract:
A composition comprising a rheology modified polymer which is obtainable from a process of reacting a coupling agent comprising a poly(sulfonyl azide) with a polymer to form a rheology modified polymer, the process comprising to steps;(a) forming a first admixture, hereinafter referred to as a concentrate, of a poly(sulfonyl azide), a first admixture amount of a first polymer or a liquid which does not require removal from the polymer, hereinafter diluent; (b) then forming a second admixture of the first admixture with a second amount of at least one second polymer, hereinafter second polymer composition, wherein to second polymer is a polyolefin; and (c) heating the second admixture at least to the decomposition temperature of the coupling agent for a time sufficient to result in coupling of polymer chains, wherein either the first admixture or to second admixture further comprises multiple polymer chains of at least one third polymer having a composition different from that of to first or second polymer such that different polymer chains are connected by coupling linkages, wherein the rheology modified polymer has less tan about 10 percent gel as measured by ASTM D2765-procedure A.