LEATHER-LIKE SHEET

A leather-like sheet (1) is provided having at least a substrate layer (11) and a surface skin layer (12) in which surface skin layer (12) is composed of a cross-linked product of a polyurethane hot-melt composition containing 100 parts by mass of a urethane prepolymer (A), 5 parts by mass to 40 par...

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Main Authors TAKAHASHI, MINORU, KANAGAWA, YOSHINORI, NIWA, TOSHIO, TAMAKI, TOSHIFUMI
Format Patent
LanguageEnglish
French
German
Published 05.09.2012
Subjects
FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
LAUNDERING
TEXTILES
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
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Summary:A leather-like sheet (1) is provided having at least a substrate layer (11) and a surface skin layer (12) in which surface skin layer (12) is composed of a cross-linked product of a polyurethane hot-melt composition containing 100 parts by mass of a urethane prepolymer (A), 5 parts by mass to 40 parts by mass of a coloring agent (B) containing a polyol as a vehicle, 5 parts by mass to 50 parts by mass of multi-functional (meth)acrylate (C), and 0.5 parts by mass to 5 parts by mass of a photopolymerization initiator (D), wherein the urethane prepolymer (A) 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 (a1) containing 40% by mass or more of polytetramethylene glycol and a polyisocyanate (a2) with a (meth)acrylate containing a hydroxyl group. Leather-like sheet (1) has an excellent surface grade while maintaining excellent suppleness and bending resistance.
Bibliography:Application Number: EP20070832086