Beta-1,3-Glucan Adhesive Composition for High-Temperature Holding Power
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Solution Overview
Problem
Existing adhesive compositions fail to meet the requirements of high adhesive strength and holding power, especially under high temperature conditions, as described in Patent Document 1.
Innovation Solution
An adhesive composition incorporating a β-1,3-glucan derivative with a degree of acyl group substitution of 2.6 or more and less than 3.0, combined with an isocyanate-based crosslinking agent, such as an adduct-type, isocyanurate-type, or allophanate-type, to enhance adhesive strength and holding power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a β-1,3-glucan derivative with degree of substitution of 2.5 is used (Patent Document 1), then the adhesive composition can be formulated, but the adhesive strength is insufficient
Solution Approach 1:
The patent changes the degree of substitution parameter from 2.5 (prior art) to a specific range of 2.6 or more and less than 3.0. This parameter optimization enables both high adhesive strength and high holding power under high temperature conditions, resolving the technical contradiction between adhesive strength and thermal stability.
2Reliability
If the holding power under high temperature is increased, then the displacement distance of adherend is reduced, but the adhesive strength requirement becomes more difficult to satisfy
Solution Approach 1:
By optimizing the degree of substitution to 2.6 or more and less than 3.0, the patent achieves a balance where both high holding power under high temperature (short displacement distance) and high adhesive strength are simultaneously attained, resolving the contradiction between these two performance requirements.
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 adhesive composition achieves high adhesive strength and holding power under high temperature conditions, reducing adhesive residue and improving the durability of the pressure-sensitive adhesive tape.
Implementation Method 1
an isocyanate-based crosslinking agent
Data Source
AI summary
An adhesive composition contains a β-1,3-glucan derivative having a degree of substitution of the acyl group of 2.6 or more and less than 3.0, and an isocyanate-based crosslinking agent. A pressure-sensitive adhesive tape includes a pressure-sensitive adhesive layer formed from the adhesive composition.