Suede-like napped sheet excellent in sweat resistance

Details Suede-like napped sheet excellent in sweat resistance Suede-like napped sheet excellent in sweat resistance

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) C08G 18/40 (2006.01) C08G 18/44 (2006.01) C08L 77/00 (2006.01) D06N 3/00 (2006.01) D06N 3/14 (2006.01) D06P 3/82 (2006.01)

Patent

CA 2052383

Abstract of the Disclosure This invention provides in a suede-like napped sheet comprising a polyamide ultrafine fiber and a poly- urethane elastic polymer, the improvement that the poly- urethane elastic polymer has, in a state of a film 90 to 110µ m thick dyed with a green series cobalt-containing dye, a strength retention ratio of 60 % or more after 6 weeks at 110°C, a strength retention ratio of 60 % or more after 6 weeks at 70°C and 95 % RH and an area swel- ling ratio of 10 % or less after 2 hours immersed in oleic acid of 25°C. The sheet of this invention is soft and excellent in hydrolysis resistance, oxidative de- composition resistance and sweat resistance, particularly among them in durability against a higher fatty acid, one of sweat components, and further has dyeability.

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