Synthetic resin leather

#1. Field of the Invention

#The present invention relates to a synthetic resin leather prepared by arranging a synthetic resin layer on the surface of a substrate such as knit or woven fabric or soft type foam sheet, especially relates to a synthetic resin leather having good touch.

#2. Description of the Prior Art

#The present invention will be understood more readily with reference to the Examples and the Comparative Examples, however, these are only intended to illustrate the invention and not be construed to limit the scope of the invention.

#Acrylic soft resin (SA1000P: Product of Kuraray Co., Ltd.), thermoplastic polyurethane (UHE-75, Shore hardness 75: Product of Mitsubishi Chemicals Co., Ltd.), copolymerized polyester resin (DC427: Product of Mitsubishi Rayon Co., Ltd. ), polyolefin resin [ethylene-methacrylate copolymer (ethylene 80 wt. %), WH-206: Product of Sumitomo Chemical Industries Co., Ltd.], partially bridged nitrile rubber (Nipol Dn214: product of Nihon Zeon Co., Ltd.), polyvinyl chloride (degree of polymerization, 1100), bridged polyalkyleneoxide resin (Aqua Calk FW: product of Sumitomo Seika Co., Ltd.), plasticizer tri2-ethylhexyl trimellitate, Ba—Zn complex stabilizer, partially esterficated phosphoric acid slipping agent, phosphoric acid ester slipping agent(AX-38: product of Asahi Denka Kogyo Co., Ltd.), calcium carbonate, diantimony trioxide and pigment are blended according to the component ratio shown in Example 1-7 and Comparative Example 1 of Table 1. This blended substance is formed to the sheet of 0.35 mm thickness by calendering method. Two liquid type polyurethane adhesive is coated over the surface of a grey sheeting made of polyester fiber. To the coated surface, above mentioned calender finished sheet is piled up, lightly heat-pressed and lightly adhered to prevent the shifting, then heat-pressed by a patterned roller heated to 180° C., and the grey sheeting and the synthetic resin sheet become one body. Thus, the synthetic resin leather of the present invention having a pattern of 0.22 mm height is obtained.

#The obtained synthetic resin leather is left in the atmosphere of 23° C. temperature and 65% relative humidity for 24 hours, and the touch of each specimen are evaluated. Evaluation is carried out by ⊚, ◯, Δ and X. ⊚ is a touch of baby's skin, ◯ is a touch of natural leather, Δ is a touch similar to natural leather and X is a touch of general synthetic resin leather. The obtained results are summarized in Table 1. 1 TABLE 1 Com- parative Example Example 1 2 3 4 5 6 7 1 acrylic soft 100 20 20 resin thermo plastic 80 polyurethane polyester resin 80 copolymer polyolefin 100 resin partially bridged 20 nitrile rubber polyvinyl chloride 100 100 100 100 resin bridged polyalkylene 10 10 10 10 10 3 30 oxide resin tri2-ethylhexyl 20 80 80 80 80 trimellitate calcium carbonate 18 18 18 18 diantimony trioxide 4 4 4 4 Ba-Zn complex 3 3 3 3 stabilizer partially ester- 1 1 1 ficated phosphoric acid slipping agent phosphoric acid 1 ester slipping agent pigment small small small small small small small small (touch estimation) ∘ ∘ ∘ ∘ ∘ Δ ∘ x