Title:
GRAIN FINISH LEATHER-LIKE SHEET AND EVALUATION METHOD FOR GRAIN FINISH LEATHER-LIKE SHEET
Document Type and Number:
WIPO Patent Application WO/2020/195850
Kind Code:
A1
Abstract:
This grain finish leather-like sheet includes a fiber substrate and a polyurethane surface coating membrane laminated on a surface of the fiber substrate directly or with another polyurethane layer sandwiched therebetween, wherein: the polyurethane surface coating membrane includes a diketopyrrolopyrrole red pigment and/or an α-type phthalocyanine blue pigment, and further includes a clear polyurethane film layer that coats the polyurethane surface coating membrane; and the color difference series evaluation performed on the grain finish leather-like sheet using a gray scale is at least grade 4 to 5, the evaluation being carried out by dropping 0.03 g of oleic acid on a surface of the clear polyurethane film layer and then, using a crockmeter, reciprocating a white cotton cloth 100 times.
Inventors:
ASHIDA TETSUYA (JP)
HARA KANSAI (JP)
HARA KANSAI (JP)
Application Number:
PCT/JP2020/010610
Publication Date:
October 01, 2020
Filing Date:
March 11, 2020
Export Citation:
Assignee:
KURARAY CO (JP)
International Classes:
D06N3/14; B32B27/12; B32B27/20; B32B27/40
Domestic Patent References:
| WO2004015194A1 | 2004-02-19 | |||
| WO2009107246A1 | 2009-09-03 | |||
| WO2011058937A1 | 2011-05-19 |
Foreign References:
| JP2015168907A | 2015-09-28 | |||
| JP2006037254A | 2006-02-09 | |||
| JP2013231268A | 2013-11-14 | |||
| CN101736604A | 2010-06-16 | |||
| JP2011052336A | 2011-03-17 | |||
| JPS542301A | 1979-01-09 |
Attorney, Agent or Firm:
EGAWA Masaru et al. (JP)
Download PDF: