Title:
POLYURETHANE FOAM SHEET, METHOD FOR PRODUCING SAME, AND METHOD FOR PRODUCING LAMINATE
Document Type and Number:
WIPO Patent Application WO/2018/003222
Kind Code:
A1
Abstract:
The problem the invention is intended to solve is to provide a polyurethane foam sheet having excellent foam retentivity after sheet formation, feel, and peel strength. The invention provides a polyurethane foam sheet formed from a polyurethane composition containing a main agent (i) including a urethane prepolymer (A) having isocyanate groups and a curing agent (ii) including a polyol (B), wherein the polyurethane foam sheet is characterized in that the urethane prepolymer (A) has polymerizable unsaturated groups introduced into 5-25 mol% of the remaining isocyanate groups relative to the urethane prepolymer (A-1) having an isocyanate group content of 2-20 mass%. The invention also provides a method for producing a polyurethane foam sheet characterized in that the above polyurethane composition is foamed by a gas loading method or a water foaming method.
Inventors:
HIGUCHI DAICHI (JP)
TAKENAKA MASAMI (JP)
TAKENAKA MASAMI (JP)
Application Number:
PCT/JP2017/014038
Publication Date:
January 04, 2018
Filing Date:
April 04, 2017
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08G18/00; B32B5/18; B32B27/40; C08F299/06; C08G18/10; C08G18/67; C08G101/00
Foreign References:
| JP2005506397A | 2005-03-03 | |||
| JP2014024880A | 2014-02-06 | |||
| JP2008156544A | 2008-07-10 | |||
| JP2008101149A | 2008-05-01 | |||
| JPS62119236A | 1987-05-30 | |||
| JPH07102038A | 1995-04-18 | |||
| JPS5036559A | 1975-04-05 | |||
| JP2014084394A | 2014-05-12 |
Attorney, Agent or Firm:
KONO Michihiro (JP)
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