Patent ID: 7652093
Filing Date: 2010-01-26
Classification: C08K,C08L,Y10T

Abstract:
1. A plasticized impact copolymer composition comprising: (I) 1 to 40 wt % (based upon the weight of the non-functionalized plasticizers and the impact copolymer) of one or more non-functionalized plasticizers (“NFP”) where the NFP comprises C (II) 40 to 99 wt % (based upon the weight of the non-functionalized plasticizers and the impact copolymer) of a propylene impact copolymer (“ICP”), said ICP comprising (A) 40 to 95 wt % propylene homopolymer or copolymer (based upon the total weight of the ICP) where said copolymer comprises 10 wt % or less of ethylene, butene, hexene or octene comonomer, and (B) from 5 to 60 wt % (based upon the total weight of the ICP) of a propylene copolymer consisting essentially of from 5 to 70 wt % of ethylene, butene, hexene and/or octene comonomer and 30 to 95 wt % propylene, and wherein polyethylene homopolymer and copolymer having a weight average molecular weight of from 500 to 10,000 is substantially absent from the composition, and wherein the 1% Secant flexural modulus of the ICP is from 300 to 2300 MPa and the Gardner impact strength of the ICP at −29° C. is from 20 to 1000 in-lb.