CPC C08L 23/0853 (2013.01) [C08J 9/0061 (2013.01); C08J 9/0066 (2013.01); C08J 9/103 (2013.01); C08K 3/22 (2013.01); C08K 3/26 (2013.01); C08K 5/103 (2013.01); C08K 5/14 (2013.01); C08K 5/23 (2013.01); C08L 23/0815 (2013.01); C08J 2207/00 (2013.01); C08J 2323/08 (2013.01); C08J 2483/04 (2013.01); C08K 2003/2296 (2013.01); C08K 2003/265 (2013.01); C08L 83/04 (2013.01)] | 18 Claims |
1. An expanded polymer composition for footwear, the expanded polymer composition being prepared from a polymer composition, the polymer composition comprising:
an elastomeric ethylene-vinyl acetate (EVA) composition;
a blowing agent; and
optionally one or more selected from a group consisting of a base polymer, filler, peroxide agent, and blowing accelerator,
wherein the elastomeric EVA composition has a melt flow index (MFI) at 190° C. and 2.16 kg as determined according to ASTM D1238 in the range of 6.1 g/10 min and 45 g/10 min,
wherein the elastomeric EVA composition comprises:
(A) an EVA copolymer at a percent by weight in the range of 20 wt % to 90 wt %;
(B) an ethylene alpha-olefin copolymer at a percent by weight in the range of 5% to 60%;
(C) a polyorganosiloxane at a percent by weight in the range of 0.1 wt % to 10 wt %; and
(D) a plasticizer at a percent by weight in the range of 0.5 wt % to 20 wt %; and
(E) a rubber at a percent by weight in the range of 0.5 wt % to 40 wt %,
wherein the expanded polymer composition exhibits a density as determined by ASTM D-792 within a range of 0.25 g/cm3 to 1.0 g/cm3.
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