Aldehyde-Modified Acrylate Coatings for Solvent Resistance
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Solution Overview
Problem
Current coating materials, particularly paints, face challenges in achieving a balance of mechanical stability, chemical resistance, and environmental sustainability, with limitations in varying hardness, UV resistance, and solvent resistance, while also requiring volatile organic solvents and having high monomer content and production complexity.
Innovation Solution
A monomer mixture comprising at least 30% alkyl (meth)acrylates with 1 to 10 carbon atoms and 0.1 to 40% (meth)acrylates with an aldehyde group, allowing for the production of polymers with low residual monomer content, high solvent resistance, and adjustable hardness, without volatile organic solvents, and suitable for various substrates including textiles and metals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional coating materials are used to achieve mechanical stability and chemical resistance, then the coating performance is improved, but the hardness variability is limited and volatile organic solvents are required
Solution Approach 1:
The patent applies parameter changes by systematically varying the monomer composition ratios, specifically using alkyl (meth)acrylates with 1-10 carbon atoms combined with (meth)acrylates containing aldehyde groups in specific proportions. This enables continuous adjustment of coating hardness from soft to hard variants while maintaining chemical resistance and mechanical stability, directly resolving the contradiction between reliable coating performance and hardness adaptability
Solution Approach 2:
The patent employs composite materials by creating polymer dispersions from multiple monomer components - alkyl (meth)acrylates providing mechanical stability and chemical resistance, combined with (meth)acrylates containing aldehyde groups for crosslinking capability and hardness adjustment. This composite approach enables both reliable baseline performance and variable hardness through compositional control
2Reliability
If conventional coating materials are used to achieve chemical resistance, then the coating durability is improved, but the production complexity increases
Solution Approach 1:
The patent extracts and eliminates volatile organic solvents from the coating formulation, using water-based polymer dispersions instead. This simplifies production by removing solvent handling, storage, and environmental compliance complexities while maintaining chemical resistance through the polymer-aldehyde crosslinking system
Solution Approach 2:
The patent implements self-service through self-crosslinking mechanisms where (meth)acrylates containing aldehyde groups automatically crosslink within the polymer dispersion under ambient or mild heating conditions. This eliminates the need for complex external crosslinking equipment or multi-step processes, reducing production complexity while ensuring durable chemical resistance
3Stability of the object's composition
If conventional coating materials are used to achieve solvent resistance, then the coating stability is improved, but the residual monomer content is high
Solution Approach 1:
The patent applies preliminary action by conducting extensive polymerization reactions before coating application, achieving high conversion rates of monomers to polymers. This preliminary complete polymerization, followed by thorough filtration and purification steps, ensures low residual monomer content (<1% by weight) in the final coating formulation, directly addressing the manufacturing precision requirement while maintaining solvent resistance
4Strength
If conventional coating materials are used to achieve mechanical stability, then the coating strength is improved, but the UV resistance is insufficient
Solution Approach 1:
The patent uses composite materials by combining alkyl (meth)acrylate polymers providing mechanical stability with (meth)acrylates containing aldehyde groups that form crosslinked networks. This composite structure creates both mechanical strength and UV resistance through the crosslinked architecture that prevents polymer chain degradation under UV exposure, simultaneously achieving both requirements
5Reliability
If conventional coating materials are used to achieve high hardness, then the coating durability is improved, but the elongation at break is reduced
Solution Approach 1:
The patent applies parameter changes by controlling the ratio of alkyl (meth)acrylates to (meth)acrylates with aldehyde groups, and adjusting crosslinking density. This enables tuning of the coating structure to achieve high hardness through crosslinking while maintaining sufficient elongation at break by optimizing the base polymer flexibility, resolving the contradiction between durability and extensibility
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 enables the creation of coatings with high elongation at break, tensile strength, and UV resistance, while being environmentally friendly, cost-effective, and suitable for diverse applications, including textiles and metals, with improved shelf life and chemical stability.
Implementation Method 1
a monomer mixture comprising at least 30% by weight of one or more alkyl (meth)acrylates with 1 to 10 carbon atoms in the alkyl radical and 0.1 to 40% by weight of one or several (meth)acrylates with at least one aldehyde group in the alkyl radical
Implementation Method 2
carbonyl group-containing polymers that can be hardened by adding crosslinking agents
Implementation Method 3
0.1 to 40% by weight of one or several (meth)acrylates with at least one aldehyde group in the alkyl radical
Data Source
AI summary
The present invention relates to a monomer mixture comprising at least 30 wt.-% of one or more alkyl(meth)acrylates having 1 to 10 carbon atoms in the alkyl radical, said alkyl radical containing no double bonds or hetero atoms, and 0.1 to 40 wt.-% of one or more (meth)acrylates having at least one aldehyde group in the alkyl radical. The present invention further relates to polymers obtained from said monomer mixture, and to coating means containing said polymers.