Di- and Tri-Carboxylic Acid Compounds for UV-Curable Polyester Coatings
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Solution Overview
Problem
Current technologies for di- and tri-carboxylic acid compounds and polyester oligomers and polymers lack improved properties and effective methods for forming curable compositions suitable for coatings that can be efficiently cured using electron beam or UV radiation.
Innovation Solution
Development of di- and tri-functional carboxylic acid compounds represented by formula (A), which are used to synthesize polyester oligomers and polymers through specific reaction routes involving hydroxy-functional and amine-functional dicarboxylic acids, unsaturated anhydrides, and diols, enabling the creation of curable compositions that can be cured using electron beam or UV radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional polyester oligomers and polymers are used, then basic coating formation is achieved, but the coatings lack improved properties such as enhanced molecular weights, reaction efficiencies, and cured film quality
Solution Approach 1:
The patent modifies the chemical structure parameters of polyester compounds by incorporating specific functional groups (hydroxy-functional, amine-functional, unsaturated) and controlling molecular weight ranges (100-10,000 g/mol). These parameter changes enable improved coating properties including enhanced molecular weights, reaction efficiencies, and cured film quality while maintaining manufacturability through established polyester synthesis methods
Solution Approach 2:
The invention creates composite polyester structures by combining multiple functional components: diols, dicarboxylic acids, anhydrides, and unsaturated compounds in specific ratios. This composite approach allows simultaneous achievement of improved molecular weight, reaction efficiency, and cured film properties that cannot be obtained from single-component systems
2Productivity
If polyester polymers are synthesized through conventional methods, then polymer formation is achieved, but curable compositions suitable for efficient electron beam or UV radiation curing cannot be formed
Solution Approach 1:
The polyester compounds are designed with multi-functionality, incorporating both polyester-forming functional groups (hydroxy and carboxylic) and radiation-curing functional groups (unsaturated bonds). This universal design allows the same material to serve dual purposes: forming the polyester matrix and enabling efficient curing via electron beam or UV radiation, thereby improving productivity without significantly increasing device complexity
Solution Approach 2:
The unsaturated functional groups act as intermediaries that bridge the polyester formation process and the radiation curing process. These groups enable the polyester polymer to function as both the base material and the curing substrate, allowing efficient energy transfer during electron beam or UV irradiation without requiring separate curing agents or complex composition structures
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 resulting polyester oligomers and polymers exhibit improved properties and can be effectively cured to form coatings, offering enhanced molecular weights and reaction efficiencies, resulting in high-quality, tack-free, and rigid film formations.
Implementation Method 1
The compositions may be cured (i.e., polymerized) by exposure to electron beam (i.e., e-beam) radiation
Implementation Method 2
The compositions may be cured (i.e., polymerized) by exposure ultra-violet light
Data Source
AI summary
The invention relates to di- and tri-carboxylic acid compounds and polyester oligomers and polymers made therefrom. Curable compositions comprising the polyester oligomers and polymers are also described.