High-Solid UV-Curable Coating Composition for Low VOC Emissions
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Solution Overview
Problem
Existing coating compositions for vehicle parts, particularly those used in air spraying or flow coating, generate high levels of volatile organic compounds (VOCs), leading to environmental pollution and regulatory challenges, while compromising workability and coating properties.
Innovation Solution
A high solid content ultraviolet-curable coating composition is developed using a combination of multifunctional urethane (meth)acrylate oligomers and (meth)acrylate monomers, along with photoinitiators and additives, to reduce VOCs and maintain excellent coating properties such as adhesion, heat resistance, and weather resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a high solid content ultraviolet-curable coating composition is used, then VOC emissions are reduced and environmental compliance is improved, but workability and coating properties deteriorate
Solution Approach 1:
The patent changes the chemical composition parameters by incorporating specific multifunctional oligomers (5-10 wt%), monomers (70-80 wt%), and photoinitiators (1-5 wt%) to achieve high solid content (90-99 wt%) while maintaining proper viscosity and workability for air spray and flow coating applications
Solution Approach 2:
The patent creates a composite coating system combining multiple components: multifunctional urethane (meth)acrylate oligomers, (meth)acrylate monomers, photoinitiators, and optional additives, which together provide both environmental compliance and coating performance
2Object-generated harmful factors
If a high solid content ultraviolet-curable coating composition is used, then VOC emissions are reduced, but adhesion and drying properties deteriorate
Solution Approach 1:
The patent optimizes the molecular weight and functionality parameters of the oligomers (5-10 wt%) and monomers to ensure proper adhesion to substrates while maintaining high solid content and enabling effective UV curing for reliable drying properties
3Object-generated harmful factors
If a high solid content ultraviolet-curable coating composition is used, then VOC emissions are reduced, but heat resistance and moisture resistance deteriorate
Solution Approach 1:
The patent formulates a composite system with multifunctional oligomers and monomers that create a crosslinked network structure, providing enhanced heat resistance, moisture resistance, and chemical resistance while maintaining high solid content and low VOC emissions
4Object-generated harmful factors
If a high solid content ultraviolet-curable coating composition is used, then VOC emissions are reduced, but appearance properties deteriorate
Solution Approach 1:
The patent adjusts the viscosity and composition parameters of the coating to ensure proper flow and leveling characteristics during application, achieving smooth appearance properties while maintaining high solid content and low VOC emissions
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 significantly reduces VOC emissions, meets stringent environmental regulations, enhances productivity, and improves economic feasibility by minimizing maintenance costs, while maintaining superior coating performance.
Implementation Method 1
an ultraviolet-curable coating composition, which comprises a urethane (meth)acrylate oligomer, a (meth)acrylate monomer, a photoinitiator
Data Source
AI summary
The present invention relates to a high solid type ultraviolet-curable coating composition and a molded product comprising a cured coating layer formed using the same. The present invention provides an eco-friendly UV-curable coating composition having less generation of volatile organic compounds.