US 12,305,038 B2
Thermoplastic polyurethane compounds exhibiting enhanced stain resistance
Jiren Gu, Crystal Lake, IL (US)
Assigned to Avient Corporation, Avon Lake, OH (US)
Appl. No. 17/420,811
Filed by Avient Corporation, Avon Lake, OH (US)
PCT Filed Jan. 7, 2020, PCT No. PCT/US2020/012459
§ 371(c)(1), (2) Date Jul. 6, 2021,
PCT Pub. No. WO2020/146301, PCT Pub. Date Jul. 16, 2020.
Claims priority of provisional application 62/790,287, filed on Jan. 9, 2019.
Prior Publication US 2022/0089870 A1, Mar. 24, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C08L 75/06 (2006.01); B29C 45/00 (2006.01); C08G 18/42 (2006.01); H01B 3/30 (2006.01); B29K 75/00 (2006.01)
CPC C08L 75/06 (2013.01) [B29C 45/0001 (2013.01); B29C 45/006 (2013.01); C08G 18/4277 (2013.01); H01B 3/302 (2013.01); B29K 2075/00 (2013.01); C08L 2203/20 (2013.01)] 7 Claims
 
1. An accessory for an electronic device, the accessory comprising a molded thermoplastic article molded from a thermoplastic polyurethane compound, the thermoplastic polyurethane compound consisting of:
100 parts by weight of aromatic polycaprolactone thermoplastic polyurethane;
0.1 to 10 parts of an additive per 100 parts by weight of the aromatic polycaprolactone thermoplastic polyurethane, wherein the additive includes at least one mold release agent;
0 to 150 parts of a secondary polymer per 100 parts by weight of the aromatic polycaprolactone thermoplastic polyurethane, wherein the secondary polymer is selected from the group consisting of styrenic block copolymers, thermoplastic vulcanizates, polyolefin elastomers, copolyesters, and combinations thereof;
0 to 300 parts of a plasticizer per 100 parts by weight of the aromatic polycaprolactone thermoplastic polyurethane;
wherein the thermoplastic polyurethane compound is free of aliphatic polycaprolactone thermoplastic polyurethane; and
wherein the molded thermoplastic article achieves a rating of 1 according to Blue Jean Abrasion Test.