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公开(公告)号：US20230193094A1
公开(公告)日：2023-06-22
申请号：US17950535
申请日：2022-09-22
Applicant: Sika Hamatite Co.,Ltd.
Inventor： Yuichi Matsuki , Megumi Abe , Kazuki Miura
IPC: C09J183/04 , C09J4/00 , C09J11/06
CPC classification number: C09J183/04 , C09J4/00 , C09J11/06 , C09J2301/408
Abstract: There is provided a two-part urethane adhesive composition including: a main agent containing a polyisocyanate component (A); and a curing agent containing water and an active hydrogen-containing compound (B). The (B) contains a compound represented by Formula (4); the (A) contains a urethane prepolymer (A-3); an average active hydrogen concentration of the (B) is 0.50 to 3.50 mol/kg; an average active hydrogen concentration of the (B) and the water is 2.00 to 8.00 mol/kg. The main agent and the curing agent are mixed in such amounts as to satisfy conditions that: a ratio of the number of isocyanate groups of the (A) to the number of active hydrogens of the (B) is 1 to 5; and a ratio of the number of isocyanate groups of the (A) to the total number of active hydrogens of the (B) and the water is 0.5 to 2.5.
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公开(公告)号：US20230055820A1
公开(公告)日：2023-02-23
申请号：US17882093
申请日：2022-08-05
Applicant: Sika Hamatite Co., Ltd
Inventor： Yuichi Matsuki , Kazuki Miura , Megumi Abe
Abstract: The present technology provides a bonded article, comprising: a first member containing plastic and including a portion that has been flame-treated under a condition A1 shown below; a second member; and an adhesive that bonds the first member and the second member to each other, wherein the first member adheres with the adhesive at the flame-treated portion, and a primer is not interposed between the first member and the adhesive: (Condition A1) a volume ratio RA1 of air and combustion gas used for generation of flame in the flame treatment, and a volume ratio RP of air and combustion gas when the combustion gas is completely combusted satisfy the following formula (1): 0.8≤volume ratio RA1/volume ratio RP≤1 (1).
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