Polyoxyalkylene Chain Composition for High Elongation Handleability
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Solution Overview
Problem
Existing compositions with low-viscosity polymers face challenges in achieving high elongation at break while maintaining good handleability.
Innovation Solution
Incorporating a compound with a polyoxyalkylene chain containing 100 or more oxyalkylene groups and (meth)acryloyl groups into the composition, which forms a cured product with low viscosity and excellent handleability, enhancing elongation at break.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a low-viscosity polymer is used to improve handleability, then the composition has excellent handling properties, but the cured product has low elongation at break
Solution Approach 1:
The patent applies parameter changes by carefully controlling the molecular weight (500-50,000) and viscosity (10-1000 Pa·s at 25°C) of the polyoxyalkylene chain compound. By optimizing these parameters, the composition achieves both excellent handleability in the uncured state and high elongation at break (100-500%) in the cured product, resolving the contradiction between ease of operation and strength.
2Strength
If the polyoxyalkylene chain length is increased to improve elongation at break, then the cured product has higher elongation, but the viscosity of the composition increases reducing handleability
Solution Approach 1:
The patent resolves this contradiction by precisely controlling the number of oxyalkylene groups (10-1000 groups) and the resulting molecular weight (500-50,000) of the compound. This parameter optimization ensures that the polyoxyalkylene chain provides sufficient elongation at break (100-500%) while maintaining low viscosity (10-1000 Pa·s at 25°C) for excellent handleability.
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 composition achieves improved elongation at break and handleability of the cured product, with potential for low elasticity and high strength.
Implementation Method 1
a cured product of a composition containing a specific compound having a polyoxyalkylene chain and having two (meth)acryloyl groups can form a cured product having a high elongation at break while having a low viscosity and excellent handleability
Data Source
AI summary
A composition containing a compound represented by the following formula (1):wherein R11 and R12 each independently represent a hydrogen atom or a methyl group, and R13 represents a divalent group having a polyoxyalkylene chain, and wherein the polyoxyalkylene chain has 100 or more of oxyalkylene groups.