Patent ID: 6953541
Filing Date: 2005-10-11
Classification: C08J,Y02W

Abstract:
1. A method for preparing high scrap recycle content flexible polyolefin compositions comprising: creating a melt blend comprised of 15% to 50% by weight thermoplastic scrap material, up to 15% by weight poly(ethylene-co-vinyl acetate) and the remainder of the melt blend comprised of a blending composition; wherein the melt blend is formed by feeding said components to a melt compounding extruder operating at sufficient temperature, residence time and screw configuration to produce a homogenous melt blend; solidifying said melt blend; wherein the blending composition is comprised of from 40% to 60% by weight polypropylene, at least 40% by weight impact modifier and up to 15% by weight plasticizer; wherein the polypropylene is an impact polypropylene polymer with 5 to 7 percent by weight attached ethylene chains; wherein the impact modifier is an olefin copolymer of ethylene; wherein the plasticizer is selected from the group of compositions consisting of, tri-2-ethylhexyl trimellitate, butylbenzene sulfonamide, epoxidized soybean oil, octyl tallate, butyl tallate, octyl tallate and alkyl tallate; wherein the thermoplastic scrap material comprises granulated blends comprised of between 12 and 35% by weight polyamide; wherein the thermoplastic scrap material comprises up to 3% by weight polyester; wherein the thermoplastic scrap material comprises up to 5% by weight polypropylene; wherein the thermoplastic scrap material comprises up to 15% by weight poly(ethylene-co-vinyl acetate); and wherein the thermoplastic scrap material comprises up to 75% by weight poly(ethylene-co-vinyl acetate) filled with inorganic compositions wherein said inorganic compositions are further comprised of BaSO wherein the flexible polyolefin composition so produced comprises at least 16 percent by weight of the polypropylene.