Triazine UV Absorbing Polymer Coating Stability
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Solution Overview
Problem
Current triazine-based UV absorbers in coating materials face challenges with migration over time, leading to deterioration of coating quality, and there is a need for improved UV stability and secondary film properties like gloss and color in automotive paint systems.
Innovation Solution
A high molecular weight UV absorber polymer with multiple hydroxy groups is developed, which reacts with specific compounds to form a stable and evenly dispersed UV absorbing polymer for coating solutions, providing enhanced protection against UV-induced degradation and improving gloss and color.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If low molecular weight triazine UV absorbers are used in coating materials, then UV absorption function is provided, but the UV absorber migrates over time deteriorating coating quality
Solution Approach 1:
The patent uses a composite approach by combining triazine-based UV absorber compounds with coating resins through covalent bonding. The UV absorber is integrated into the coating matrix as a composite system, where the resin matrix provides structural stability and prevents migration while the triazine compound provides UV absorption functionality. This composite structure resolves the contradiction by eliminating the migration issue while maintaining UV protection.
Solution Approach 2:
The coating resin acts as an intermediary between the triazine UV absorber and the coating matrix. The resin provides functional groups that covalently bond to the triazine compound, serving as a mediator that anchors the UV absorber in place while allowing it to maintain its UV absorption properties. This intermediary approach prevents migration without compromising the UV protective function.
2Device complexity
If coating thickness is reduced to reduce operations, then manufacturing complexity is reduced, but UV stability and performance profile deteriorate
Solution Approach 1:
The patent changes the concentration and distribution parameters of the UV absorber within the coating. By using a high concentration of covalently bonded triazine-based UV absorbers integrated into the resin matrix, the coating achieves enhanced UV stability even with reduced thickness. The parameter change from physical mixture to covalent integration allows thinner coatings to maintain protective performance.
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 UV absorbing polymer effectively stabilizes coatings against UV degradation, maintaining quality and enhancing gloss and color retention, while reducing migration and improving the performance profile of multicoat paint systems.
Implementation Method 1
triazine based ultraviolet light absorber compounds... protection and stabilization of organic materials... against damages by light, heat, oxygen, or environmental forces
Data Source
AI summary
The presently claimed invention relates to a novel, highly efficient triazine based UV absorbing polymer, its use in coating compositions and coatings comprising the UV absorbing polymer thereof.