Particle Dispersion Composition Using HSP Matching Against Aggregation

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Solution Overview

Problem

Particle dispersions in liquid media suffer from aggregation issues, leading to poor dispersibility during dispersion treatments.

Innovation Solution

A particle dispersion with a HSP distance of 5.50 MPa0.5 or less between particles and the liquid medium, using organic solvents like methyl isobutyl ketone and toluene, and incorporating inorganic particles such as silica with surface treatment agents, achieves excellent dispersibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If particles are dispersed in a liquid medium, then the particle dispersion can be used for various industrial applications, but the particles may aggregate together resulting in poor dispersibility

Engineering Contradiction:

Improveapplication rangeVSAvoiddispersibility

Core Design Contradiction:

Adaptability or versatilityVSStability of the object's composition

Solution Approach 1:

The patent applies parameter changes by controlling the HSP distance between particles and liquid medium to be within a specific range (0-5.50 MPa^0.5). This parameter control ensures that the liquid medium has appropriate solubility parameters to prevent particle aggregation while maintaining dispersion stability across various industrial applications.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses the liquid medium as an intermediary substance that mediates between particles. By selecting a liquid medium with specific HSP parameters within the defined range, the liquid medium acts as a stabilizing intermediary that prevents direct particle-particle aggregation while allowing the particles to maintain their functional properties for various applications.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Stability of the object's composition

If the HSP distance between particles and liquid medium is reduced to improve dispersibility, then particle aggregation is suppressed, but the selection of suitable liquid media becomes more constrained

Engineering Contradiction:

ImprovedispersibilityVSAvoidliquid medium selection flexibility

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The patent defines the HSP distance parameter within a specific range (0-5.50 MPa^0.5) that balances dispersibility improvement with liquid medium selection flexibility. This parameter range is wide enough to accommodate multiple liquid medium types (organic solvents, water, alcohol-based solvents) while being specific enough to ensure effective dispersion stability.

Inventive Principle:

Principle #35Parameter changes

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 dispersion exhibits enhanced dispersibility and stability, maintaining low aggregation even after prolonged storage, suitable for applications in laminated plates, circuit connecting members, and semiconductor production.

Implementation Method 1

a distance of a HSP value of the particles with respect to a HSP value of the liquid medium is 5.50 MPa0.5 or less

Methodology Applied

Scientific EffectHansen solubility parameter (HSP): Solvation

Data Source

PatentUS20250382468A1Particle dispersion

Publication Date: 2025.12.18 RESONAC CORP

AI summary

A particle dispersion, containing: particles; and a liquid medium, in which a distance of a HSP value of the particles with respect to a HSP value of the liquid medium is 5.50 MPa0.5 or less.