Styrene-Free Coating Composition Crosslinking
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Solution Overview
Problem
Conventional coating compositions lack sufficient crosslink density, chemical resistance, heat resistance, and shrink resistance, particularly due to the limitations of styrene-containing vinyl ester resins.
Innovation Solution
Incorporating reactive (meth)acrylate monomers with polymerizable vinyl esters and multifunctional di- or tri-acrylate monomers, along with a styrene-free reactive diluent like 1,6-hexanediol diacrylate, and an allyl-ether functional monomer, to enhance crosslinking and resistance properties in coating compositions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If styrene-containing vinyl ester resins are used in conventional coating compositions, then the coating can be manufactured with standard formulations, but the crosslink density, chemical resistance, heat resistance, and shrink resistance are insufficient
Solution Approach 1:
The patent combines polymerizable vinyl ester compounds with multifunctional di- or tri-acrylate monomers and reactive (meth)acrylate monomers to create a composite coating system. This composite formulation achieves superior crosslink density and chemical resistance by integrating multiple reactive components that work synergistically during curing, directly resolving the contradiction between reliability and formulation complexity.
Solution Approach 2:
The patent changes the chemical composition parameters by incorporating specific ratios of vinyl ester compounds (20-40 wt%), multifunctional acrylates (10-30 wt%), and reactive (meth)acrylates (10-30 wt%). These parameter changes optimize the crosslinking reaction to achieve enhanced chemical resistance while maintaining manageable formulation complexity through defined compositional ranges.
2Temperature
If conventional vinyl ester resins are used, then the coating application process is simple, but the heat resistance and shrink resistance are inadequate
Solution Approach 1:
The patent creates a composite coating system combining vinyl ester compounds with multifunctional di- or tri-acrylate monomers. This composite structure provides enhanced heat resistance through improved crosslink density achieved by the synergistic interaction between the vinyl ester and acrylate components, while the defined formulation ratios keep the composition complexity manageable.
Solution Approach 2:
The patent optimizes the weight ratio parameters of vinyl ester compounds (20-40 wt%) and multifunctional acrylates (10-30 wt%) to achieve optimal heat resistance. These parameter changes ensure sufficient crosslinking density for high-temperature performance while maintaining practical formulation complexity through established compositional ranges.
3Stability of the object's composition
If standard styrene-containing resins are used, then the coating formulation is straightforward, but the shrink resistance is insufficient
Solution Approach 1:
The patent develops a composite coating formulation combining polymerizable vinyl ester compounds with multifunctional di- or tri-acrylate monomers and reactive (meth)acrylate monomers. This composite system achieves superior shrink resistance through enhanced crosslink density that constrains polymer chain movement and reduces volumetric contraction during curing, while the defined compositional ratios maintain formulation manageability.
Solution Approach 2:
The patent adjusts the compositional parameters by incorporating vinyl ester compounds at 20-40 wt%, multifunctional acrylates at 10-30 wt%, and reactive (meth)acrylates at 10-30 wt%. These parameter changes optimize the crosslinking network structure to minimize shrinkage while keeping the formulation complexity controlled through established concentration ranges.
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 solution significantly improves chemical resistance, heat resistance, and shrink resistance, as demonstrated by superior performance in comparison to standard styrene-containing vinyl ester resins, with enhanced durability and reduced weight gain in chemical exposure tests.
Implementation Method 1
reactive (meth)acrylate monomers with polymerizable vinyl esters and multifunctional di- or tri-acrylate monomers
Data Source
AI summary
An unsaturated polyester resin composition comprising an unsaturated polyester, an acetoacetate functional monomer; a multifunctional di- or tri-acrylate monomer; and an allyl ether-functional monomer/oligomer, wherein the resin composition is substantially free of styrene.