Adhesive composition and adhesive film containing an N-substituted (meth)acrylamide copolymer and an antistatic agent

A polymerizable composition with balanced hydrophobic and hydrophilic N-substituted (meth)acrylamide addresses water resistance and substrate compatibility issues, offering improved adhesion and durability across diverse applications.

JP2026086476APending Publication Date: 2026-05-26KJ CHEM
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
KJ CHEM
Filing Date
2026-01-23
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing N-substituted (meth)acrylamides used in adhesives and coatings suffer from insufficient water resistance, especially in long-life electronic and optical materials, and lack compatibility with substrates of varying polarities.

Method used

A polymerizable composition containing N-substituted (meth)acrylamide with specific hydrophobic and hydrophilic groups, allowing for improved adhesion, transparency, and water resistance, formulated to balance wettability across a wide range of substrate polarities.

Benefits of technology

The composition provides high transparency, adhesion, stain resistance, and durability, with enhanced water resistance and impact resistance, suitable for various substrates and applications including coatings, cosmetics, inks, and three-dimensional molding.

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Abstract

The objective is to provide an adhesive composition that has excellent heat resistance and stain resistance and contains an antistatic agent, and various molded articles using the adhesive composition, such as an adhesive film having high transparency. [Solution] An adhesive composition containing a copolymer of N-substituted (meth)acrylamide (A) represented by general formula [1] and a monofunctional (meth)acrylate, and an antistatic agent. JPEG2026086476000017.jpg3077 (in the formula, R 1 R represents a hydrogen atom or a methyl group. 2 and R 3 One of them represents a chain hydrocarbon group having 6 or more carbon atoms or a cyclic hydrocarbon group having 6 or more carbon atoms, and the other represents a hydrogen atom, a chain hydrocarbon group having 1 or more carbon atoms or a cyclic hydrocarbon group having 3 or more carbon atoms. Also, R 2 and R 3 This includes those that, together with the supporting nitrogen atoms, form a saturated ring with six or more members.
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