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Title:
FULL-GRAIN-LEATHER-LIKE SHEET
Document Type and Number:
WIPO Patent Application WO/2021/131590
Kind Code:
A1
Abstract:
A full-grain-leather-like sheet comprising a fiber substrate, a polyurethane surface layer bonded to one surface of the fiber substrate, and a polyurethane adhesive layer for bonding the fiber substrate and the polyurethane surface layer together, wherein the polyurethane adhesive layer principally contains a water-based polyurethane, and contains 0.01-0.45 mass% of a sulfate or an alkyl sulfate ester salt expressed in terms of sulfur atoms, the coloration produced by a bromocresol green (BCG) solution being equivalent to pH 4.8 or less.

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Inventors:
WARITA MASATO (JP)
Application Number:
PCT/JP2020/045140
Publication Date:
July 01, 2021
Filing Date:
December 03, 2020
Export Citation:
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Assignee:
KURARAY CO (JP)
International Classes:
D06N3/14; B32B27/12; C09J11/04; C09J11/06; C09J175/04
Domestic Patent References:
WO2014125797A12014-08-21
Foreign References:
JPS63264663A1988-11-01
JPH08504230A1996-05-07
JPS4942801A1974-04-22
JPS50154401A1975-12-12
JP2006124888A2006-05-18
JP2019019304A2019-02-07
CN101235195A2008-08-06
JPS63264663A1988-11-01
JPH08140711A1996-06-04
JP2000273136A2000-10-03
Other References:
See also references of EP 4083314A4
Attorney, Agent or Firm:
EGAWA Masaru et al. (JP)
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