Adhesive composition, adhesive, curing agent for carboxy group-containing resin, and laminate
The adhesive composition with a carboxyl group-containing resin and a specific curing agent enhances pot life and productivity, addressing the limitations of existing compositions by using a secondary isocyanate group-containing polyisocyanate and polyol reaction product.
WO2026141073A1PCT designated stage Publication Date: 2026-07-02MITSUI CHEMICALS INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MITSUI CHEMICALS INC
- Filing Date
- 2025-12-17
- Publication Date
- 2026-07-02
AI Technical Summary
Technical Problem
Existing adhesive compositions with carboxyl group-containing resins have a relatively short pot life and require improvements in productivity.
Method used
An adhesive composition comprising a carboxyl group-containing resin with an acid value of 15 mg KOH/g or more and a curing agent containing a reaction product of a secondary isocyanate group-containing polyisocyanate and a polyol with an average number of hydroxyl groups less than 3.0, which includes a secondary isocyanate group-free polyisocyanate.
Benefits of technology
The composition achieves improved pot life and productivity, resulting in better workability and adhesive performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
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Abstract
This adhesive composition contains a main agent and a curing agent. The main agent contains a carboxy group-containing resin. The acid value of the carboxy group-containing resin is 15 mgKOH / g or more. The curing agent includes a reaction product of a polyisocyanate and a polyol. The polyisocyanate includes a secondary isocyanate group-containing polyisocyanate. The average number of hydroxyl groups of the polyol is less than 3.0.
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