BLENDS OF AND METHODS OF BLENDING OLEFIN/ESTER COPOLYMERS HAVING IMPROVED ENVIRONMENTAL STRESS CRACKING OR ENVIRONMENTAL FATIGUE RESISTANCE, PRODUCTS MADE THEREFROM, METHODS OF MOLDING SAID PRODUCTS

摘要

A blend and flexible product made of two copolymers of an olefin and anethylenically unsaturated carboxylic ester monomer. The copolymers areselected such that each copolymer includes greater than 6 weight percentethylenically unsaturated carboxylic ester monomer, or selected to be morethan 10 weight percent of the blend. If the copolymers have similar estercontents, that is differing by less than 6 weight percent, the copolymers areselected such that their difference in their melt flows is greater than about8. If the copolymers have dissimilar ester contents, that is differing by morethan 6 weight percent, the copolymers are selected such that the ratio oftheir melt flows is about 2 or less.