| abstract |
(57) [Summary] [Purpose] Excellent in moisture permeability, waterproofness, stain resistance, abrasion resistance, surface activity and surface strength, and the touch of the surface does not have the slimy feel of natural leather. Provides a highly moisture-permeable waterproof material such as a moisture-permeable waterproof sheet or a moisture-permeable waterproof leather-like sheet material that has a dry texture and has a deep appearance and color depth similar to natural leather. . [Structure] Polyurethane elasticity obtained by reacting one surface of a fibrous substrate with polyurethane, a hydroxyl group-containing silicone oil having a branch by a siloxane bond, and an aliphatic or alicyclic polyisocyanate using a tin-based or iron-based catalyst. A highly moisture permeable and waterproof material having a polymer coating layer mainly composed of a polymer. |