Invention Grant
- Patent Title: Process for producing sheet-shaped material and sheet-shaped material obtained by said process
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Application No.: US14427744Application Date: 2013-09-13
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Publication No.: US10301770B2Publication Date: 2019-05-28
- Inventor: Gen Koide , Shunichiro Nakai , Satoshi Yanagisawa , Makoto Nishimura , Takahiro Tsuchimoto
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: Ratnerprestia
- Priority: JP2012-203305 20120914; JP2012-203441 20120914; JP2012-203547 20120914; JP2012-203603 20120914
- International Application: PCT/JP2013/074833 WO 20130913
- International Announcement: WO2014/042241 WO 20140320
- Main IPC: D06N3/00
- IPC: D06N3/00 ; D06N3/14 ; D06M11/05 ; D06M15/333 ; D06M15/564

Abstract:
Provided is an environmentally friendly process for producing a sheet-shaped material having both an elegant, napped appearance and a soft texture, which qualities have not been achieved concurrently, and also exhibiting good abrasion resistance. The process of the present invention for producing a sheet-shaped material includes the successive steps of (a) adding a polyvinyl alcohol having a degree of saponification of 98% or more and a degree of polymerization of 800 to 3,500 to a fibrous substrate in an amount of 0.1 to 50% by mass relative to the total mass of fibers in the fibrous substrate; (b) adding a waterborne polyurethane to the fibrous substrate with the added polyvinyl alcohol; and (c) removing the polyvinyl alcohol from the fibrous substrate with the added waterborne polyurethane.
Public/Granted literature
- US20150233050A1 PROCESS FOR PRODUCING SHEET-SHAPED MATERIAL AND SHEET-SHAPED MATERIAL OBTAINED BY SAID PROCESS Public/Granted day:2015-08-20
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