Moisture-Curable Silylated Resin for Windshield Adhesive Elongation
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Solution Overview
Problem
Conventional moisture-curable silylated resin compositions do not consistently provide the desired combination of high elongation and tear strength, particularly in applications like windshield adhesives, where these properties are essential.
Innovation Solution
A moisture-curable composition comprising a silylated resin with a specific formula, a flexibilizer, and a curing catalyst, which enhances elongation and tear properties, suitable for use in sealants, coatings, and adhesives.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional moisture-curable silylated resin compositions are used, then basic coating and adhesive properties are achieved, but elongation and tear strength are insufficient
Solution Approach 1:
The patent modifies the chemical structure of the silylated resin by introducing specific functional groups (alkyl, aryl, vinyl, or hydroxyl) at the silicon atom position in Formula (I). This parameter change in molecular structure enables the cured composition to achieve enhanced elongation and tear strength while maintaining consistent mechanical properties across different batches and applications.
Solution Approach 2:
The invention creates a composite system by combining the specifically structured silylated resin (Formula I) with conventional moisture-curable resin components. This composite approach integrates the enhanced mechanical properties of the modified silylated resin with the desirable characteristics of traditional resin systems, achieving both improved tear strength and consistent performance.
2Length of moving object
If conventional silylated resins are used, then basic adhesion is provided, but elongation properties are inadequate for demanding applications
Solution Approach 1:
The patent systematically varies the substituents (R1-R6) attached to the silicon atom in the silylated resin structure. By changing these chemical parameters, the material achieves both improved elongation and tear strength simultaneously, resolving the contradiction between these two mechanical properties in conventional formulations.
3Reliability
If standard moisture-curable compositions are used, then basic sealant function is achieved, but the combination of elongation and tear strength is not optimal
Solution Approach 1:
The invention optimizes the chemical parameters of the silylated resin by selecting specific substituents (alkyl, aryl, vinyl, hydroxyl groups) at the silicon atom. This parameter optimization creates a balanced combination of mechanical properties including elongation and tear strength, achieving reliable performance for sealant applications.
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 achieves improved elongation and tear strength, making it suitable for applications such as windshield adhesives, sealants, and coatings, with enhanced performance compared to conventional compositions.
Implementation Method 1
moisture-curable silylated resins
Implementation Method 2
upon curing provide cured compositions
Data Source
AI summary
Moisture-curable compositions are provided which comprises a moisture-curable silylated resin, a flexibilizer and at least one curing catalyst, The cured compositions possess enhanced elongation and tear properties, and are highly suitable for applications such as adhesives, sealants, coatings, gaskets, industrial rubber goods, and the like.