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Title:
TWO-PART CURABLE ADHESIVE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2020/067529
Kind Code:
A1
Abstract:
This two-part curable adhesive composition comprises: a main agent (A) containing a urethane prepolymer (a1) and a residual polyisocyanate (a2); and a curing agent (B) comprising an amorphous polyol compound (b1) and a polyamine compound (b2). The equivalent ratio of isocyanate groups within a raw material polyisocyanate to hydroxyl groups within a crystalline polyol compound constituting the urethane prepolymer (a1) is 2.05−12. The ratio of NCO groups/total active hydrogen groups is 0.5−4. The ratio of isocyanate groups/hydroxyl groups is 2−12.

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Inventors:
KIMURA KAZUSHI (JP)
KAGEYAMA HIROKAZU (JP)
YAMAMOTO YUTARO (JP)
Application Number:
PCT/JP2019/038398
Publication Date:
April 02, 2020
Filing Date:
September 27, 2019
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C09J175/04; C09J11/04; C09J11/06; C09J175/06; C09J175/08
Foreign References:
JPS62191076A1987-08-21
JP2014522426A2014-09-04
CN102272184A2011-12-07
JP2017218539A2017-12-14
Other References:
See also references of EP 3858936A4
Attorney, Agent or Firm:
GLOBAL IP TOKYO (JP)
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