Patent ID: 8389615
Filing Date: 2013-03-05
Classification: C08L

Abstract:
1. A composition comprising: (i) at least one low molecular weight polyalphaolefin having an Mn of 300 to 15,000 g/mol, a viscosity index of at least 130 according to ASTM D2270, a pour point of −20° C. or less according to ASTM D97, a flash point of 200° C. or more according to ASTM D56, and a specific gravity (15.6° C.) of 0.855 or less; (ii) at least one block copolymer obtainable by selectively hydrogenating a block copolymer having terminal polymeric blocks of a vinyl aromatic monomer and a mid-block prepared originally with an olefin and subsequently hydrogenated; (iii) at least one polypropylene selected from propylene homopolymers and copolymers having a 1% secant flexural modulus of from 100 to 2300 MPa and propylene impact copolymers having a melting point of 145° C. or more; and (iv) at least one plastomer having a melt flow rate (MFR) at 190° C. (2.16 kg load) of 0.1 dg/min to 100 dg/min), wherein the plastomer is an ethylene based polymer having a density of 0.86 g/cc to about 0.910 g/cc or a propylene based polymer having a heat of fusion (Hf) of 70 J/g or less; and wherein said composition is characterized by a decrease in 100% Modulus of less than 15%, and at least one of the following, when measured after aging at 125° C. in air for 5 days: decrease in Tensile Strength of less than 55%; decrease in Elongation at Break of less than 25%; and decrease in Toughness of less than 60%; wherein the decrease is measured relative to the original sample prior to aging.