Reference

Leather substitutes with stereopattern

Leather substitutes with stereopattern. Nishimura, Takeo; Akamata, Kazuhito (Kuraray Co., Ltd., Japan). Japan. Kokai JP 52124978 20 Oct 1977 Showa, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: D04H001-42. APPLICATION: JP 76-40715 8 Apr 1976. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Fabrication and Uses) Leather substitutes, with a regular pattern, were prepd. by embossing a synthetic fabric coated with a urethane rubber by using a roll with tooth height 3100 m. Thus, nylon nonwoven fabric was impregnated with a mixt. contg. 20% elastomeric adipic acid-4,4'-diphenylmethane diisocyanate-ethylene glycol copolymer [25931-01-5] and 4% carbon black, immersed in a coagulating bath, dried, buffed, and embossed at 170° and 35 kg/cm2 to give a leather substitute useful for bags and interior decoration.

Abrasion-resistant leather substitutes

Abrasion-resistant leather substitutes. Nishimura, Takeo; Kuramoto, Osamu (Kuraray Co., Ltd., Japan). Japan. Kokai JP 53024005 6 Mar 1978 Showa, 5 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: D06N003-04. APPLICATION: JP 76-99180 17 Aug 1976. DOCUMENT TYPE: Patent CA Section: 37 (Plastics Fabrication and Uses) A nonwoven nylon fabric was impregnated with a soln. of 4,4'-diphenylmethane diisocyanate-ethylene glycol-poly(ethylene adipate) copolymer [25931-01-5] elastomer 20, brown pigment 5, and DMF 75% and gelled in aq. DMF to give a porous sheet which was coated with a soln. of 4,4'-diphenylmethane diisocyanate-ethylene glycol-polyethylene glycol copolymer (I) [39385-58-5] elastomer 8, Lanyl Brown 3R 6, DMF 15, THF 36, and cyclohexanone 35% and enbossed to give a leather substitute. The leather substitute was coated with a soln. of I 8, cetyl alc. [36653-82-4] 1, toluene 32, MeOH 14, THF 30, and DMF 15% for improved abrasion resistance.