Title:
TWO-PACK URETHANE-BASED ADHESIVE
Document Type and Number:
WIPO Patent Application WO/2022/153761
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a two-pack urethane-based adhesive that includes a second-pack liquid in which liquid ingredients are inhibited from bleeding out and which can be inhibited from decreasing in thixotropic property, and that gives cured objects having, after aging, excellent adhesiveness. This two-pack urethane-based adhesive comprises a first-pack liquid, which comprises a urethane prepolymer having an isocyanate group, and a second-pack liquid, which comprises water, an active-hydrogen compound (which is not water) having an active-hydrogen group capable of reacting with the isocyanate group, and cellulose nanofibers, wherein the first-pack liquid and the second-pack liquid each independently contain carbon black and/or an inorganic filler, the content of the cellulose nanofibers being 0.1-1.5 mass% with respect to the content of the water.
Inventors:
MATSUKI YUICHI (JP)
ABE MEGUMI (JP)
MIURA KAZUKI (JP)
ABE MEGUMI (JP)
MIURA KAZUKI (JP)
Application Number:
PCT/JP2021/045916
Publication Date:
July 21, 2022
Filing Date:
December 14, 2021
Export Citation:
Assignee:
SIKA HAMATITE CO LTD (JP)
International Classes:
C09J11/06; C09J11/04; C09J11/08; C09J175/04; C09J175/08
Domestic Patent References:
| WO2015186555A1 | 2015-12-10 |
Foreign References:
| JP2013199526A | 2013-10-03 | |||
| JP2018115298A | 2018-07-26 | |||
| JP2003336028A | 2003-11-28 | |||
| JP2002363525A | 2002-12-18 | |||
| JP2019214681A | 2019-12-19 | |||
| JP2007031483A | 2007-02-08 | |||
| JP2007031483A | 2007-02-08 |
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
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