Organosilicon Coupling Compound for Cyclic Polymerization Adhesion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional silane coupling agents with polymerizable groups lack sufficient adherence to various substrates, and there are no reported examples of silane coupling agents with both an alkenyl ether moiety and an acryloyl group on the same molecule that exhibit cyclic polymerizability.
Innovation Solution
Development of an organosilicon compound with a hydrolyzable silyl group, an alkenyl ether moiety, and an acryloyl group, prepared by reacting a halogen group-containing organosilicon compound with a metal salt compound, which can be used in curable compositions to enhance adherence to substrates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polymerizable group-containing silane coupling agents are used, then the composition can be cured through polymerization, but the adherence to various substrates is insufficient
Solution Approach 1:
The patent changes the chemical structure parameters of the silane coupling agent by introducing a specific α-substituent (other than methyl group) at the α-position of the acryloyl or methacryloyl group. This structural modification enables cyclic polymerization mechanism, which significantly improves adherence to various substrates while maintaining polymerizability and curing properties.
Solution Approach 2:
The patent creates a composite molecular structure that combines multiple functional moieties: a hydrolyzable silyl group for inorganic substrate bonding, an alkenyl ether moiety for cyclic polymerization, and an acryloyl/methacryloyl group for radical polymerization. This composite structure enables the silane coupling agent to simultaneously achieve excellent adherence, polymerizability, and curing properties.
2Reliability
If silane coupling agents with standard α-substituents (methyl group) are used, then the compound structure is simple and well-established, but cyclic polymerizability and excellent adherence are not achieved
Solution Approach 1:
The patent modifies the α-substituent parameter at the α-position of the acryloyl or methacryloyl group, selecting specific groups (other than methyl) that enable cyclic polymerization. This parameter change introduces cyclic polymerizability while maintaining reasonable molecular structure complexity for practical application.
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 organosilicon compound improves the adherence of cured products to various substrates, making them suitable for use as coating agents and adhesives.
Implementation Method 1
preparing the compound by reacting a halogen group-containing organosilicon compound with a metal salt compound
Implementation Method 2
a silicon atom-bonded hydrolyzable group
Implementation Method 3
these compounds undergo cyclic polymerization via a radical polymerization mechanism
Data Source
AI summary
An organosilicon compound represented by formula (1). (R1 is an alkyl, alkenyl, aryl, or acyl group, R2 is an alkyl or aryl group, R3 is a hydrogen atom or a methyl group, A1 is a single bond or an alkylene group, A2, A3, and A4 are each a methylene group or an oxygen atom, with the proviso that at least one of the A2, A3, and A4 moieties is an oxygen atom, and n is an integer of 1-3.)