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Title:
URETHANE ADHESIVE COMPOSITION
Document Type and Number:
Japanese Patent JP2021195514
Kind Code:
A
Abstract:
To provide an urethane adhesive composition in which a main agent has high isocyanate group content and which quickly develops excellent strength of adhesion even when using a dehydrator, and enables foam formation in the cured product of the urethane adhesive composition to be suppressed.SOLUTION: A two-pack urethane adhesive composition is provided including main agent and a hardening agent, wherein the main agent includes: a filler; and urethane prepolymer having an isocyanate group and formed of polyol 1 having polyisocyanate A and having 2-3 hydroxy groups per one molecule and having a number average molecular weight of 1,800 or more, wherein the isocyanate group content is 5 mass% or more of a total amount of the main agent, wherein the hardening agent includes: polyoxyalkylene polyol having 2-3 hydroxy groups per one molecule and a number average molecular weight of 1,800 or more; polyol 2 having two or more hydroxyl groups per one molecule, and a number average molecular weight of 200 or less; an urethanization reaction catalyst; a filler; and zeorite, wherein the urethanization reaction catalyst includes: an organic tin catalyst; and an amine catalyst represented by formula (1), or a blocked amine catalyst in which the amine catalyst is blocked with an acid.SELECTED DRAWING: None

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Inventors:
TSUSHIMA DAISUKE
ISHIKAWA KAZUNORI
Application Number:
JP2020105458A
Publication Date:
December 27, 2021
Filing Date:
June 18, 2020
Export Citation:
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Assignee:
YOKOHAMA RUBBER CO LTD
International Classes:
C09J175/04; C08G18/10; C08G18/18; C08G18/24; C08K3/013; C08L75/04; C09J11/04; C09J175/08; C09J179/02
Domestic Patent References:
JP2020504315A2020-02-06
JP2012207122A2012-10-25
JP6756393B12020-09-16
Foreign References:
WO2019173058A12019-09-12
WO2019173049A12019-09-12
WO2009057310A12009-05-07
WO2009047962A12009-04-16
Attorney, Agent or Firm:
Hideaki Ito
Fumio Mitsuhashi
Youichiro Machida
Muto Michiyo



 
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