합성 피혁

• Main Authors: KANAGAWA YOSHINORI, KOMATSUZAKI KUNIHIKO
• Format: Patent
• Language: Korean
• Published: 28.05.2021
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR; LAUNDERING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF TEXTILES OR THE LIKE; WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL

본 발명은, 폴리올(A), 및, 폴리이소시아네이트(B)의 반응물이고, 이소시아네이트기를 갖는 우레탄 프리폴리머(i)를 함유하는 습기 경화형 폴리우레탄 핫멜트 수지 조성물의 경화물층을 갖는 합성 피혁으로서, 상기 폴리올(A)이, 헥산디올을 원료로 하는 결정성 폴리에스테르폴리올(a1)을 함유하고, 방향족 폴리에스테르폴리올(a'1)을 함유하지 않는 것임을 특징으로 하는 합성 피혁을 제공하는 것이다. 상기 폴리올(A)은, 폴리에테르폴리올(a2) 및 그 외 폴리에스테르폴리올(a3)을 더 함유하는 것이 바람직하다. 상기 폴리에테르폴리올(a2)은, 폴리프로필렌글리콜, 및/또는, 폴리테트라메틸렌글리콜인 것이 바람직하다. The present invention provides a synthetic leather having a cured layer of a moisture-curable polyurethane hot melt resin composition that is a reaction product of a polyol (A) and a polyisocyanate (B) and contains a urethane polymer (i) having an isocyanate group. The synthetic leather is characterized by the polyol (A): containing a crystalline polyester polyol (a1) having a hexane diol as a raw material therefor; and not containing an aromatic polyester polyol (a'1). The polyol (A) ideally also contains a polyether polyol (a2) and another polyester polyol (a3). The polyether polyol (a2) is ideally polypropylene glycol and/or polytetramethylene glycol.