Amide-Linked Silane Composition for Abrasion-Resistant Surface Layers
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Solution Overview
Problem
Existing silane compounds do not provide sufficient abrasion durability and alkali resistance in surface treatments.
Innovation Solution
A silane compound of the formula R 1< -X 1< -SiR 11< n1 R 12< 3-n1 where R 1< is a monovalent group with no hydroxyl or hydrolyzable groups, X 1< contains an amide bond, and R 11< and R 12< are hydroxyl or hydrolyzable groups, forming a surface-treating layer with improved abrasion durability and alkali resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional silane compounds are used for surface treatment, then water- and oil-repellency is achieved, but abrasion durability and alkali resistance are insufficient
Solution Approach 1:
The patent modifies the molecular structure parameters of silane compounds by introducing specific functional groups (amide bonds in the main chain, hydroxyl/hydrolyzable groups at terminal positions) and controlling molecular weight ranges. This structural parameter change enables the compound to achieve both excellent abrasion durability and alkali resistance while maintaining water- and oil-repellency, resolving the contradiction between reliability and ease of manufacture.
Solution Approach 2:
The patent creates a composite functional structure within the silane compound by combining multiple functional groups: amide bonds provide mechanical strength and abrasion resistance, while hydroxyl/hydrolyzable groups enable crosslinking and chemical bonding to substrates. This composite molecular architecture allows simultaneous achievement of abrasion durability, alkali resistance, and surface repellency.
2Reliability
If conventional silane compounds are used for surface treatment, then water- and oil-repellency is achieved, but alkali resistance is insufficient
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating amide bonds (which resist alkali degradation) and hydrolyzable groups (which form strong alkali-resistant crosslinked networks) into the silane compound structure. This molecular parameter modification enables the surface treatment layer to maintain its properties in alkaline environments while preserving ease of application.
Solution Approach 2:
The hydrolyzable groups act as intermediaries that facilitate crosslinking between silane molecules and substrate surfaces, creating a robust network structure that resists alkali penetration and degradation. This intermediary mechanism enables the surface treatment to achieve superior alkali resistance without compromising manufacturing ease.
3Duration of action of stationary object
If silane compound structure is modified to improve abrasion durability, then longevity is enhanced, but compound complexity increases
Solution Approach 1:
The patent optimizes the molecular weight parameter to specific ranges (50-500 for the polydimethylsiloxane chain) to achieve the right balance between chain length for durability and molecular size for processability. This parameter optimization extends surface-treating layer longevity while avoiding excessive compound complexity that would hinder manufacturing and 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 compound effectively addresses the abrasion durability and alkali resistance of surface-treating layers, enhancing their longevity and performance under harsh conditions.
Implementation Method 1
R 11 and R 12 are hydroxyl or hydrolyzable groups
Data Source
AI summary
The present invention provides a compound of the following formula (1) wherein R1 is a monovalent group containing one or more Si atoms to which neither a hydroxyl group nor a hydrolyzable group is directly bonded, X1 is a divalent organic group containing an amide bond, R11 is each independently a hydroxyl group or a hydrolyzable group, R12 is each independently a hydrogen atom or a monovalent organic group, and n1 is an integer of 1 to 3. R1 - X1 - SiR11n1R123-n1 (1)