Title:
ISOCYANATE-BASED ADHESIVE
Document Type and Number:
WIPO Patent Application WO/2021/006187
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an isocyanate-based adhesive that exhibits superior adhesiveness, water-resistant adhesiveness, and heat-resistant adhesiveness. The present invention provides an isocyanate-based adhesive to be used in a surface-treated crystalline thermoplastic resin base material. In the isocyanate-based adhesive, the value expressed by formula (A) is 2.0-70 after being cured by being left to stand for three days under conditions of 23ºC and 50%RH. In the crystalline thermoplastic resin base material, the value expressed by formula (B) is 2.0-30.0. Formula (A) = (JIS-A hardness)/(breaking strength [MPa])×(elongation at break(%))/100. Formula (B)= δd/δp + δp, where δp=γp-γp0, δd=|γd-γd0|, γp0 is a polarity term of surface free energy before surface treatment, γp is a polarity term of surface free energy after surface treatment, γd0 is a dispersion term of surface free energy before surface treatment, and γd is a dispersion term of surface free energy after surface treatment.
Inventors:
ABE MEGUMI (JP)
MATSUKI YUICHI (JP)
MATSUKI YUICHI (JP)
Application Number:
PCT/JP2020/026085
Publication Date:
January 14, 2021
Filing Date:
July 02, 2020
Export Citation:
Assignee:
YOKOHAMA RUBBER CO LTD (JP)
International Classes:
C09J11/04; C09J11/06; C09J175/04
Domestic Patent References:
| WO2017022666A1 | 2017-02-09 |
Foreign References:
| JP2017128683A | 2017-07-27 | |||
| JP2017082118A | 2017-05-18 | |||
| JP2010522789A | 2010-07-08 | |||
| JP2014025000A | 2014-02-06 | |||
| JP2017128052A | 2017-07-27 | |||
| JP2014025000A | 2014-02-06 |
Other References:
OWENSWENDT, J. APPL. POLYM. SCI., vol. 13, 1969, pages 1741 - 1747
See also references of EP 3995553A4
See also references of EP 3995553A4
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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