| abstract |
The present invention relates to a polymer composition comprising: (A) at least one styrene block copolymer selected from the group consisting of (styrene-isoprene-styrene) block copolymer, (styrene-butadiene-styrene) block copolymer, (styrene-ethylene-butylene-styrene) block copolymer, (styrene-ethylene-propylene-styrene) block copolymer, and mixtures thereof; (B) at least one rubber-like material containing double bonds selected from the group consisting of styrene-butadiene copolymer with high styrene content, styrene-butadiene copolymer with mean styrene content, polybutadiene rubber, polyisoprene rubber, natural rubber and mixtures thereof; (C) a softness enhancer polymer selected from ethylene-propylene copolymer, and ethylene- propylene-diene terpolymer, and mixtures thereof; and (D) optionally fillers and rubber auxiliary substances, wherein the components (A), (B), and (C) are in a proportion such that the (A):(B) ratio ranges from 1 :30 to 3:1 , and the (A):(C) ratio ranges from 1:15 to 15:1. Other embodiments of the invention include a microporous rubber-like foamed vulcanizate, and a microporous rubber-like foamed shoe sole manufactured from said polymer composition. |