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Patent Searching and Data


Title:
LEATHER-LIKE SHEET
Document Type and Number:
WIPO Patent Application WO/2008/065920
Kind Code:
A1
Abstract:
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.

Inventors:
KANAGAWA YOSHINORI (JP)
NIWA TOSHIO (JP)
TAMAKI TOSHIFUMI (JP)
TAKAHASHI MINORU (JP)
Application Number:
PCT/JP2007/072356
Publication Date:
June 05, 2008
Filing Date:
November 19, 2007
Export Citation:
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Assignee:
DAINIPPON INK & CHEMICALS (JP)
KANAGAWA YOSHINORI (JP)
NIWA TOSHIO (JP)
TAMAKI TOSHIFUMI (JP)
TAKAHASHI MINORU (JP)
International Classes:
D06N3/14
Foreign References:
JPH05262808A1993-10-12
JP2005273131A2005-10-06
JP2005273131A2005-10-06
JP2005307133A2005-11-04
JP2006152142A2006-06-15
Other References:
See also references of EP 2083116A4
Attorney, Agent or Firm:
FUKAMI, Hisao et al. (Nakanoshima Central Tower 22nd Floor,2-7, Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka 05, JP)
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