US 12,434,458 B2
Polypropylene-based outsole material, footwear sole structure including the same, and footwear article including the footwear sole structure
Hung-Chia Yen, Taichung (TW); and Pei-Neng Hsu, Changhua (TW)
Assigned to GUANG XIN POLYMER COMPOSITES CO., LTD., Nantou County (TW); Hung-Chia Yen, Taichung (TW); and Pei-Neng Hsu, Changhua County (TW)
Filed by Hung-Chia Yen, Taichung (TW); Pei-Neng Hsu, Changhua County (TW); and GUANG XIN POLYMER COMPOSITES CO., LTD., Nantou County (TW)
Filed on Dec. 22, 2023, as Appl. No. 18/394,456.
Claims priority of application No. 112133144 (TW), filed on Aug. 31, 2023.
Prior Publication US 2025/0074036 A1, Mar. 6, 2025
Int. Cl. B32B 27/00 (2006.01); A43B 13/12 (2006.01); B32B 27/32 (2006.01); C08L 23/12 (2006.01)
CPC B32B 27/00 (2013.01) [A43B 13/122 (2013.01); B32B 27/32 (2013.01); C08L 23/12 (2013.01)] 7 Claims
 
1. A polypropylene-based outsole material comprising, based on 100 wt % of the polypropylene-based outsole material:
a polypropylene homopolymer present in an amount ranging from 5 wt % to 25 wt %;
a thermoplastic polypropylene copolymer present in an amount ranging from 70 wt % to 87 wt %; and
a modifier present in an amount greater than 0 wt % and not greater than 10 wt %, the modifier being a maleic anhydride-grafted polyolefin elastomer.