Organic Silane Compound Adhesion to Glass Substrates
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Solution Overview
Problem
Existing adhesive compositions for liquid crystal displays, particularly those using silane compounds, fail to provide adequate adhesion strength under actual conditions and often experience excessive adhesion increase under hot and humid conditions, leading to issues like adhesive residue on substrates when peeled off.
Innovation Solution
A novel organic silane compound represented by formula (1), which can be synthesized through one-step or two-step processes using specific catalysts and solvents, is used to enhance the adhesion of polarizing plate adhesives to glass substrates, maintaining strength over time even in hot and humid environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional silane compounds are used in adhesive compositions, then adhesion strength is improved, but adhesion strength increases excessively under hot and humid conditions
Solution Approach 1:
The patent modifies the chemical structure of silane compounds by changing parameters such as introducing specific functional groups (cyanoacetoxy, carboxy, hydroxyl) and controlling the R1-R6 substituents to be hydrogen or C1-C6 alkyl. This structural parameter change enables the adhesive to maintain stable adhesion strength under hot and humid conditions while avoiding excessive adhesion increase.
Solution Approach 2:
The patent uses composite silane compounds that combine multiple functional groups (e.g., cyanoacetoxy group with specific alkyl substituents) to achieve both good adhesion strength and stability under hot and humid conditions. The composite structure allows the adhesive to balance bonding capability with environmental stability.
2Strength
If conventional silane compounds are used in adhesive compositions, then adhesion strength is improved, but adhesive remains on the substrate after being peeled off
Solution Approach 1:
The patent changes the chemical parameters of the silane compound by controlling the R1-R6 substituents to be hydrogen or C1-C6 alkyl groups, which modifies the bonding characteristics. This parameter change enables the adhesive to achieve strong bonding that can be cleanly peeled without leaving residue on the substrate.
3Strength
If conventional silane compounds are used in adhesive compositions, then adhesion strength is improved, but adequate adhesion strength is not achieved under actual conditions
Solution Approach 1:
The patent introduces specific functional groups (cyanoacetoxy, carboxy, hydroxyl) and controls substituent parameters (R1-R6 as hydrogen or C1-C6 alkyl) to enhance the reliability of adhesion strength under actual usage conditions, ensuring consistent performance.
Solution Approach 2:
The patent employs composite silane compounds with multiple functional groups that work synergistically to provide reliable adhesion strength under actual conditions, combining bonding capability with environmental stability.
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 novel organic silane compound significantly improves adhesion strength of acrylic resin compositions to glass substrates, maintaining performance under various conditions including room temperature, dry heat, and wet conditions, as demonstrated by superior peel adhesion tests compared to comparative examples.
Implementation Method 1
improving the adhesion of a coating layer comprising matrix resin to a substrate
Implementation Method 2
improving the affinity of an organic resin to an inorganic filler
Data Source
AI summary
The present invention relates to a novel organic silane compound, and more particularly, to a novel organic silane compound, useful in various applications, for the purpose of improving the affinity of an organic resin to an inorganic filler or improving the adhesion of a coating layer comprising matrix resin to a substrate. It is particularly useful for improving the adhesion of a polarizing plate adhesive for a liquid crystal display to a glass substrate, with little change over time even under hot and humid conditions.