METHOD FOR MANUFACTURING POLYURETHANE ADHESIVE SHEET AND THERMALLY DISSOCIATIVE BOND-CONTAINING POLYURETHANE

WIPO Patent Application WO/2014/188865

A1

The objective of the present invention is to provide a method for manufacturing a thermally processed adhesive with a new mechanism not based on reversible heating and melting of a cohesive domain, and to thereby provide an adhesive with excellent heat resistance, solvent resistance, etc. which have been issues in conventional thermal melting processed adhesives. In other words, the present invention relates to a method for manufacturing a polyurethane adhesive sheet by mixing a polyurethane (A) that includes one or more types of a thermally dissociative bond selected from an uretdione bond, biuret bond or allophanate bond and a compound (B) that includes a functional group that reacts with an isocyanate group, at a temperature equal to or higher than the temperature at which the thermally dissociative bond is able to dissociate so as to generate an isocyanate group, and forming the same into a sheet. The present invention also relates to the polyurethane (A) that includes one or more types of the thermally dissociative bond and adhesive manufacturing applications thereof.

ASADA KAZUTAKA (JP)
YAMASHITA KEIJI (JP)

PCT/JP2014/062142

November 27, 2014

May 02, 2014

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NICHIBAN KK (JP)

C09J7/00; C08G18/72; C08G18/80; C09J175/04; C09J175/06; C09J175/08

JPH08269428A	1996-10-15
JPH08291279A	1996-11-05
JPH06172735A	1994-06-21
JPH10182787A	1998-07-07
JP2008516027A	2008-05-15
JP2001081152A	2001-03-27
JP2008156488A	2008-07-10
JP2013136731A	2013-07-11
JPH10319203A	1998-12-04

TSUKUNI & ASSOCIATES et al. (JP)
Patent business corporation Tsukuni (JP)

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