Organosilicon Coating Composition Storage Stability
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Solution Overview
Problem
Existing compositions for forming coating films, particularly in display devices and semiconductor elements, face issues with storage stability and performance deterioration due to contamination and corrosion, which are not adequately addressed by existing water-repellent/oil-repellent coatings.
Innovation Solution
A composition comprising an organosilicon compound, a metal compound, and a carboxylic acid compound, with a specific molar ratio and concentration range, that inhibits hydrolysis/polycondensation reactions, improving storage stability and abrasion resistance while maintaining water and oil repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a composition including organosiloxane and crosslinking agent is used to form water-repellent/oil-repellent coating film, then water repellency and oil repellency are improved, but storage stability deteriorates due to hydrolysis and polycondensation reactions
Solution Approach 1:
The patent introduces a carboxylic acid compound as an intermediary substance that reacts with the crosslinking agent to form a stable complex, preventing the crosslinking agent from reacting with the organosiloxane during storage. This intermediary complex remains stable during storage but can be activated under specific conditions to enable crosslinking when needed, thus resolving the contradiction between maintaining storage stability and enabling crosslinking functionality.
2Reliability
If crosslinking agent is blocked in advance with keto/enol tautomeric compound, then storage stability is improved, but crosslinking ability deteriorates
Solution Approach 1:
The patent utilizes the reversible nature of keto-enol tautomerism to dynamically control the reactivity of the crosslinking agent. By changing conditions such as pH, temperature, or solvent environment, the equilibrium between keto and enol forms can be shifted, allowing the crosslinking agent to be inactive during storage (improving stability) and active during crosslinking (maintaining crosslinking ability).
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 effectively enhances the storage stability and water/oil repellency of coating films, reducing performance deterioration and contamination risks, even after storage, by controlling hydrolysis reactions and maintaining film integrity.
Implementation Method 1
the storage stability is improved by blocking the crosslinking agent (B) in advance with a keto/enol tautomeric compound
Implementation Method 2
a composition including an organosilicon compound, a metal compound, and a carboxylic acid compound, with a specific molar ratio and concentration range, that inhibits hydrolysis/polycondensation reactions
Implementation Method 3
a composition including an organosilicon compound, a metal compound, and a carboxylic acid compound, with a specific molar ratio and concentration range, that inhibits hydrolysis/polycondensation reactions
Data Source
AI summary
Although a composition for formation of a coating film is sometimes required to have satisfactory storage stability, it could not be said that a conventionally known composition has sufficient storage stability.It is an object of the present invention to provide a composition comprising an organosilicon compound which is excellent in storage stability.The present invention provides a composition comprising an organosilicon compound (A) represented by the following formula (a1), a metal compound (B) represented by the following formula (b1), a carboxylic acid compound (C), and an acid catalyst.