Porous Resin Composition Sets for Maintaining Contact-Zone Porosity
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Solution Overview
Problem
The challenge of forming a porous resin when a liquid composition for forming a porous resin comes into contact with another liquid composition, leading to suppression of porosity in the contact region, particularly when applied to a porous substrate.
Innovation Solution
A method involving a liquid composition X containing a polymerizable compound with a (meth)acryloyl or vinyl group and a solvent X that is compatible with the polymerizable compound but incompatible with the resin, and a liquid composition Y that is substantially free of polymerizable compounds, ensuring a light transmittance of 30% or more at 550 nm and a haze increasing rate of 1.0% or more, applied in a manner that allows curing of composition X in contact regions to form a porous resin.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If liquid composition X for forming porous resin comes into contact with liquid composition Y, then the resin formation process can proceed with good handleability and applicability, but the porosity of the resultant resin is suppressed in the contact region
Solution Approach 1:
The patent applies parameter changes by carefully controlling the optical properties (light transmittance at 550 nm ≥30% and haze increasing rate ≥1.0%) of liquid composition Y, and selecting appropriate polymerizable compounds with specific functional groups ((meth)acryloyl or vinyl groups) in liquid composition X. These parameter adjustments enable the system to maintain porosity even in contact regions by ensuring proper light curing while managing interfacial interactions between the two liquid compositions.
2Use of energy by moving object
If liquid composition Y with high light transmittance and specific haze properties is selected to maintain curing efficiency, then the curing process can proceed effectively, but the interaction with liquid composition X may suppress porosity formation
Solution Approach 1:
The patent resolves this contradiction by optimizing specific parameters of liquid composition Y: light transmittance at 550 nm is maintained at 30% or more to ensure adequate light penetration for curing, while the haze increasing rate is controlled to be 1.0% or more. These parameter specifications balance curing efficiency with porosity maintenance, allowing the polymerizable compound in liquid composition X to cure properly while preserving the porous structure even in contact regions.
Solution Approach 2:
The invention applies local quality by differentiating the properties required in different regions. Liquid composition Y is designed with specific optical properties that allow it to function as a compatible medium in contact regions while maintaining the porosity characteristics. The polymerizable compound X is selected to have specific functional groups that enable local curing while preserving the porous network structure in the contact zone between compositions.
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 method ensures the formation of a resin with excellent porosity even in contact regions where different compositions meet, maintaining the permeability and functionality of the composite porous body.
Implementation Method 1
a polymerizable compound X having a (meth)acryloyl group or a vinyl group
Data Source
Figure 1~2
AI summary
The present disclosure provides a liquid composition set comprising: a liquid composition X comprising a polymerizable compound X and a solvent X; and a liquid composition Y comprising a solvent Y. The liquid composition X is to form a porous resin. A liquid composition Z comprising 10.0% by mass of the liquid composition X and 90.0% by mass of the liquid composition Y has a light transmittance of 30% or more at a wavelength of 550 nm, where the light transmittance is measured while the liquid composition Z is being stirred. A haze measuring element produced from the liquid composition Z has a haze increasing rate of 1.0% or more.