Imidazole Stabilized Microparticle Compositions
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Compositions containing fine particles like carbon black and titanium oxide face challenges in dispersion during preparation and tend to aggregate over time, affecting their stability and usability in applications such as display panels and solder resist films.
Innovation Solution
Incorporating an imidazole compound with a specific structure into the composition, which stabilizes the fine particles and inhibits aggregation during storage, while also promoting curing when a thermosetting or photocurable base material is used.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional dispersants and solvents are used to prepare compositions containing fine particles, then the fine particles can be dispersed during preparation, but the fine particles aggregate with time during storage
Solution Approach 1:
The patent employs a specific imidazole compound as a mediator between the fine particles and the solvent system. This imidazole compound adsorbs onto the particle surfaces and provides steric or electrostatic stabilization, preventing aggregation during storage while maintaining dispersion during preparation. The imidazole compound acts as an intermediary that resolves the contradiction between initial dispersion and long-term stability.
Solution Approach 2:
The patent changes the chemical parameters of the dispersion system by introducing a specifically structured imidazole compound with particular molecular weight and functional group characteristics. This parameter change transforms the dispersion mechanism from conventional physical mixing to chemically stabilized dispersion, thereby preventing time-dependent aggregation while maintaining preparation ease.
2Ease of manufacture
If fine particles are dispersed in organic solvents using conventional dispersants, then the composition can be prepared, but the fine particles tend to aggregate over time
Solution Approach 1:
The imidazole compound serves as a dual-function intermediary that facilitates both the initial dispersion process and long-term stability maintenance. During preparation, it aids particle separation; during storage, it prevents aggregation through surface adsorption and stabilization, thus resolving the contradiction between manufacturing ease and compositional stability.
Solution Approach 2:
The patent creates a composite dispersion system consisting of fine particles, organic solvent, and imidazole compound. This composite material approach combines the dispersing capability of the solvent with the stabilizing function of the imidazole compound, achieving both ease of manufacture and long-term stability simultaneously.
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 imidazole compound ensures stable dispersion of fine particles, preventing aggregation and enhancing the curing process of the composition, leading to improved performance and longevity in applications like display panels and solder resist films.
Implementation Method 1
an (A) imidazole compound... stabilizes the fine particles and inhibits aggregation during storage
Implementation Method 2
promoting curing when a thermosetting or photocurable base material is used
Data Source
AI summary
A composition which contains microparticles and does not undergo the long-term process of aggregation of the microparticles during storage of the composition. An imidazole compound having a specific structure is added to a composition containing microparticles having a volume average particle diameter of 3000 nm or less. The composition may contain a base material component. The base material component may be a heat-curable or photocurable base material component. The microparticles may be inorganic particles and/or organic particles.