Silane Copolymer Curable Composition for Optical Sealing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current curable compositions used for optical devices face challenges in achieving excellent transparency, heat resistance, and adhesion, particularly when exposed to high-energy light or high temperatures, leading to potential cracking or delamination.
Innovation Solution
A curable composition comprising a silane compound copolymer, a silane coupling agent with an acid anhydride structure, and a specific mass ratio, which produces a cured product with enhanced transparency, heat resistance, and adhesion, suitable for use as an optical device-securing adhesive or sealing material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a polysilsesquioxane compound is used as the main component to improve adhesion, then adhesion is sufficient, but heat resistance and transparency are insufficient
Solution Approach 1:
The patent uses a composite material system combining polysilsesquioxane compound (for adhesion) with heat-resistant resin components (for heat resistance) and transparent resin components (for transparency). This composite approach allows the cured product to simultaneously achieve sufficient adhesion, excellent heat resistance, and excellent transparency, resolving the contradiction between adhesion and heat resistance/transparency
2Temperature
If epoxy resin or polythiol compound is used to improve heat resistance, then heat resistance is improved, but light resistance and adhesion deteriorate over time
Solution Approach 1:
The patent combines epoxy resin or polythiol compound (providing heat resistance) with polysilsesquioxane compound (providing stable adhesion and light resistance). The synergistic effect of this composite system maintains excellent adhesion and light resistance over time while preserving the heat resistance properties, resolving the contradiction between heat resistance and long-term reliability
3Illumination intensity
If optical device brightness is increased to improve performance, then brightness is significantly increased, but heat generation increases causing cured product deterioration
Solution Approach 1:
The patent changes the chemical composition parameters of the curable composition by incorporating heat-resistant resin components and optimizing the ratio of polysilsesquioxane compound with heat-resistant resin and transparent resin. This parameter change enables the cured product to withstand high temperatures generated by high-brightness optical devices, preventing cracking and delamination while allowing the optical device to operate at higher brightness levels
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 prevents deterioration in transparency and adhesion even under high-energy light or high-temperature conditions, ensuring long-term performance and reliability for optical devices with short peak wavelengths.
Implementation Method 1
a curable composition that includes (A) a silane compound copolymer
Implementation Method 2
a curable composition that includes (A) a silane compound copolymer represented by the following formula (a-1)
Implementation Method 3
a cured product that exhibits excellent transparency, excellent heat resistance, excellent crack resistance, and high adhesion
Data Source
AI summary
The present invention relates to: a curable composition comprising a component (A), a component (B), and a component (C), the curable composition comprising the component (A) and the component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:30, a cured product obtained by curing the curable composition, a method for using the curable composition as an optical device-securing adhesive or an optical device sealing material. The present invention provides a curable composition that produces a cured product that exhibits excellent transparency, excellent heat resistance, excellent crack resistance, and high adhesion, a cured product obtained by curing the curable composition, a method for using the curable composition as an optical device-securing adhesive or an optical device sealing material, a sealed optical device in which an optical device is sealed with a cured product of the curable composition, and a method for producing the same. Component (A): a silane compound copolymer (I) that is represented by a formula (a-1), wherein R1 is a hydrogen atom or the like, X0 is a halogen atom, a cyano group, or a group represented by OG (wherein G is a protecting group for a hydroxyl group), D is a single bond or the like, R2 is an alkyl group having 1-20 carbon atoms or the like, Z is a hydroxyl group, an alkoxy group having 1-10 carbon atoms, or a halogen atom, m and n are a positive integer, and o, p, q, and r are 0 or a positive integer, Component (B): at least one silane coupling agent selected from a silane coupling agent that includes a nitrogen atom in its molecule and a silane coupling agent that includes an epoxy group in its molecule, and Component (C): a silane coupling agent that has an acid anhydride structure. (CHR1X0-D-SiO3/2)m(R2SiO3/2)n(CHR1X0-D-SiZO2/2)o(R2SiZO2/2)p(CHR1X0-D-SiZ2O1/2)q(R2SiZ2O1/2)r (a-1)