Patent ID: 8110262
Filing Date: 2012-02-07
Classification: C08K,C08L,Y10T

Abstract:
1. A polyolefin composition comprising: (i) a polyolefin having a weight-average molecular weight (Mw) from about 175,000 to about 500,000 and a polydispersity index (Mw/Mn) from about 5 to about 40; (ii) about 200 to about 1500 ppm of a polymer processing aid (PPA); and (iii) about 500 to about 3000 ppm of an oligomeric hindered amine light stabilizer (HALS) having the following structure: wherein n is an integer such that the oligomeric HALS has a number-average molecular weight (Mn) in a range from about 3000 to about 4000.