US 11,939,456 B2
Composition for preparing a foam, foam, and shoe employing the same
Hsi-Hsin Shih, Kaohsiung (TW); Hsuan-Tsung Lin, Kaohsiung (TW); Ying-Pin Tu, Kaohsiung (TW); and Han-Ming Tsai, Kaohsiung (TW)
Assigned to TSRC CORPORATION, Kaohsiung (TW)
Filed by TSRC CORPORATION, Kaohsiung (TW)
Filed on Jul. 20, 2018, as Appl. No. 16/041,188.
Claims priority of provisional application 62/535,680, filed on Jul. 21, 2017.
Prior Publication US 2019/0023884 A1, Jan. 24, 2019
Int. Cl. C08L 23/08 (2006.01); A43B 1/14 (2006.01); A43B 13/02 (2022.01); A43B 13/04 (2006.01); C08J 9/10 (2006.01); C08J 9/12 (2006.01); C08L 53/02 (2006.01)
CPC C08L 23/0853 (2013.01) [A43B 1/14 (2013.01); A43B 13/02 (2013.01); A43B 13/04 (2013.01); C08J 9/103 (2013.01); C08J 9/122 (2013.01); C08J 2203/04 (2013.01); C08J 2203/06 (2013.01); C08J 2323/08 (2013.01); C08J 2409/06 (2013.01); C08J 2423/06 (2013.01); C08J 2423/08 (2013.01); C08J 2423/20 (2013.01); C08J 2425/12 (2013.01); C08J 2445/00 (2013.01); C08J 2453/02 (2013.01); C08L 23/0823 (2013.01); C08L 53/025 (2013.01); C08L 2203/14 (2013.01); C08L 2205/025 (2013.01); C08L 2205/03 (2013.01); C08L 2205/035 (2013.01); C08L 2312/00 (2013.01)] 4 Claims
 
1. A composition for preparing a foam, comprising:
10-30 parts by weight of a copolymer of a norbornene-based monomer and an olefin-based monomer, wherein the norbornene-based monomer is norbornene, ethylidene norbornene, dicyclopentadiene, methano tetrahydrofluorene, tetracyclododecene, or a combination thereof;
about 39 to 50 parts by weight of an ethylene-vinyl acetate copolymer;
27-35 parts by weight of an ethylene-1-octene copolymer;
3-5 parts by weight of a conjugated diene-vinyl aromatic copolymer which is a styrene-butadiene-styrene (SBS) block copolymer, a styrene-isoprene-styrene (SIS) block copolymer, a styrene-(isoprene/butadiene)-styrene (S-(I/B)-S) block copolymer, a styrene-ethylene-butylene-styrene (SEBS) block copolymer, or a combination thereof, or a partially hydrogenated conjugated diene-vinyl aromatic copolymer which is a partially hydrogenated styrene-butadiene-styrene (SBS) block copolymer, a partially hydrogenated styrene-isoprene-styrene (SIS) block copolymer, a partially hydrogenated styrene-(isoprene/butadiene)-styrene (S-(I/B)-S) block copolymer, a partially hydrogenated styrene-ethylene-butylene-styrene (SEBS) block copolymer, or a combination thereof, wherein the partially hydrogenated conjugated diene-vinyl aromatic copolymer has a proportion of its non-aromatic double bonds converted into single bonds which is greater than or equal to 70%;
0.1-10 parts by weight of a cross-linking agent; and
0.1-25 parts by weight of a blowing agent;
wherein a ratio of a compression set to a specific gravity of a foam produced from the composition is between 449 and 180; and
wherein a ratio of a split tear strength to the specific gravity of the foam produced from the composition is between 13.8 and 18.