UV-Tunable Polymer Adhesive Composition for Adjustable Bond Strength
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Solution Overview
Problem
Existing adhesive compositions using acrylic or methacrylic polymers lack sufficient adhesiveness and effective methods to adjust adhesion force.
Innovation Solution
A polymer compound with specific repeating units and a method of producing it through esterification and polymerization, combined with UV irradiation to adjust adhesion strength, is developed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional acrylic or methacrylic polymer adhesive compositions are used, then the adhesive composition can be applied, but the adhesiveness is insufficient
Solution Approach 1:
The patent introduces a polymer compound with a specific repeating unit structure (Formula 1A) containing a hydroxy group and an aromatic ring, where the content of this repeating unit is controlled at 1-30 mol%. This parameter change in molecular structure and composition significantly enhances adhesiveness while maintaining adhesive performance reliability.
Solution Approach 2:
The adhesive composition is formulated as a composite system containing the specific polymer compound (with repeating units of Formula 1A), optionally combined with other polymers, and various additives. This composite approach combines the adhesive properties of different components to achieve superior overall adhesiveness and reliability.
2Adaptability or versatility
If the adhesive composition is applied, then bonding can occur, but there is no effective method to adjust adhesion force
Solution Approach 1:
The patent enables dynamic adjustment of adhesion force through UV irradiation treatment. The adhesion force can be increased by irradiating with UV light of 300-700 nm, and decreased by subsequent irradiation with UV light of 200-300 nm, allowing the adhesive composition to adapt to different bonding requirements without complex control mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The polymer compound enhances adhesiveness and allows reversible adjustment of adhesion strength through UV irradiation, resulting in improved adhesive compositions and cured products.
Implementation Method 1
an adhesive composition containing: a polymer compound having a repeating unit represented by Formula 1A below... a method for producing the adhesive composition... a cured product obtained by curing the adhesive composition
Implementation Method 2
The adhesion strength of the adhesive composition of the present invention can be adjusted by irradiation with ultraviolet rays
Data Source
AI summary
Provided is a polymer compound having a repeating unit represented by Formula 1A below:wherein in Formula 1A, Z1 represents a hydrogen atom or a monovalent group, R1 represents a group represented by Formula 1B, L1 represents a divalent group, n represents an integer of 1 or more, and in in Formula 1B, L2 represents a single bond or a divalent group, R2 represents a group selected from the group consisting of a hydroxy group and a group represented by *—OR3, R3 represents a hydrocarbon group which may have a hetero atom, a plurality of R3's may be bonded to each other to form a ring, * represents a bonding position, m represents an integer of 1 to 5, and a plurality of L1's and a plurality of R2's may be the same as or different from each other.