Leather-like sheet

Disclosed is a leather-like sheet (1) having at least a base layer (11) and a skin layer (12). The skin layer (12) is composed of a crosslinked product of a polyurethane hot melt composition which contains 100 parts by mass of a urethane prepolymer (A), 5-40 parts by mass of a coloring agent (B) con...

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Bibliographic Details
Main Authors KANAGAWA YOSHINORI, NIWA TOSHIO, TAMAKI TOSHIFUMI, TAKAHASHI MINORU
Format Patent
LanguageChinese
English
Published 27.05.2009
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:Disclosed is a leather-like sheet (1) having at least a base layer (11) and a skin layer (12). The skin layer (12) is composed of a crosslinked product of a polyurethane hot melt composition which contains 100 parts by mass of a urethane prepolymer (A), 5-40 parts by mass of a coloring agent (B) containing a polyol as a vehicle, 5-50 parts by mass of a polyfunctional (meth)acrylate (C), and 0.5-5 parts by mass of a photopolymerization initiator (D). The urethane prepolymer (A) is obtained by reaction 5-50% of the total number of isocyanate groups contained in an isocyanate group-containing urethane prepolymer, which is obtained by reacting apolyol (a1) containing not less than 40% by mass of a polytetramethylene glycol and a polyisocyanate (a2), with a hydroxy group-containing (meth)acrylate. The leather-like sheet (1) has excellent surface quality, while securing excellent flexibility and bending resistance.
Bibliography:Application Number: CN200780017608