Invention Grant
- Patent Title: Leather-like sheet
- Patent Title (中): 皮革样片材
-
Application No.: US12447704Application Date: 2007-11-19
-
Publication No.: US07767293B2Publication Date: 2010-08-03
- Inventor: Yoshinori Kanagawa , Toshio Niwa , Toshifumi Tamaki , Minoru Takahashi
- Applicant: Yoshinori Kanagawa , Toshio Niwa , Toshifumi Tamaki , Minoru Takahashi
- Applicant Address: JP Tokyo
- Assignee: DIC Corporation
- Current Assignee: DIC Corporation
- Current Assignee Address: JP Tokyo
- Agency: Edwards Angell Palmer & Dodge LLP
- Priority: JP2006-325684 20061201
- International Application: PCT/JP2007/072356 WO 20071119
- International Announcement: WO2008/065920 WO 20080605
- Main IPC: B32B5/18
- IPC: B32B5/18 ; B32B27/40 ; C08L75/00 ; C08L63/00

Abstract:
A leather-like sheet is provided having a substrate layer and a surface skin layer in which the surface skin layer is composed of a cross-linked product of a polyurethane hot-melt composition containing 100 parts by mass of a urethane prepolymer, 5 parts by mass to 40 parts by mass of a coloring agent containing a polyol, 5 parts by mass to 50 parts by mass of multi-functional (meth)acrylate, and 0.5 parts by mass to 5 parts by mass of a photopolymerization initiator, wherein the urethane prepolymer can be obtained by reacting 5% to 50% of the number of isocyanate groups in a urethane prepolymer containing isocyanate groups that is obtained by reacting a polyol containing 40% by mass or more of polytetramethylene glycol and a polyisocyanate with a (meth)acrylate containing a hydroxyl group. This leather-like sheet has an excellent surface grade while maintaining excellent suppleness and bending resistance.
Public/Granted literature
- US20100068499A1 LEATHER-LIKE SHEET Public/Granted day:2010-03-18
Information query