Radiation Curable Coatings Using Cyclic Ether Polyols
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Solution Overview
Problem
The need for sustainable and non-toxic alternatives to petroleum-derived radiation curable resins, particularly to replace Bisphenol A and chlorinated products, due to environmental and health concerns, and the desire for renewable and high-performance materials for various industrial applications.
Innovation Solution
A radiation curable composition comprising (meth)acrylated compounds and inert polyesters prepared from cyclic ether polyols and polyacids, with minimal radiation curable reactive groups, offering fast curing, low viscosity, and high renewable content, suitable for use on substrates like plastics and metals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If petroleum-derived resins are used for radiation curable compositions, then good ink and coating properties are achieved, but environmental sustainability and renewability are compromised
Solution Approach 1:
The patent changes the chemical composition parameters by replacing petroleum-derived resins with bioderived cyclic ether polyols (isosorbide, isomannide, isoidide) while maintaining the radiation curable functionality through (meth)acrylate groups. This substitution maintains performance reliability while eliminating environmental harm associated with fossil fuel depletion and toxic byproducts
Solution Approach 2:
The patent employs readily available agricultural feedstocks (corn, wheat, rice, potatoes) to produce cyclic ether polyols that can be manufactured cost-effectively. These bioderived materials serve as sustainable replacements for expensive and depleting petroleum resources, providing an economically viable transition to renewable materials
2Strength
If Bisphenol A is used in radiation curable resins, then good mechanical properties and adhesion are achieved, but health safety and non-toxicity are compromised
Solution Approach 1:
The patent extracts and eliminates Bisphenol A from the resin composition entirely, replacing it with cyclic ether polyols derived from agricultural sources. This removal of the harmful substance is achieved while maintaining mechanical strength and adhesion properties through the unique molecular structure of the bioderived polyols
Solution Approach 2:
The patent creates composite resin systems combining cyclic ether polyols with (meth)acrylate functional groups to achieve the desired mechanical properties. This composite approach allows the material to exhibit both the safety of bioderived components and the performance characteristics of radiation curable systems
3Reliability
If chlorinated products are used in radiation curable compositions, then good adhesion and durability are achieved, but environmental safety and occupational health are compromised
Solution Approach 1:
The patent converts the challenge of achieving adhesion without chlorinated compounds into an opportunity by utilizing the natural adhesion properties of cyclic ether polyols. These bioderived materials provide excellent substrate bonding while eliminating the harmful environmental and health effects associated with chlorine-containing substances
Solution Approach 2:
The patent creates a chemically inert and environmentally safe composition by using cyclic ether polyols that do not contain chlorine or other harmful elements. This inert approach ensures the material is safe for occupational handling and environmentally benign while maintaining coating durability through radiation curing
4Reliability
If high renewable content is achieved using cyclic ether polyols, then sustainability is improved, but viscosity and cure speed may be compromised
Solution Approach 1:
The patent optimizes the molecular weight and functional group density of the cyclic ether polyols to achieve the desired balance between renewable content and cure speed. By carefully controlling the (meth)acrylate functionality and polyol structure, the formulation maintains high sustainability while ensuring adequate reactivity and curing performance
Solution Approach 2:
The patent combines cyclic ether polyols with appropriate photoinitiators and (meth)acrylate monomers to create a composite radiation curable system. This composite formulation ensures that the high renewable content of the polyol component is complemented by efficient curing chemistry, maintaining both sustainability and productivity
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 provides a safer, more sustainable, and high-performing coating with excellent adhesion and mechanical properties, low yellowing, and resistance to oxygen inhibition, suitable for food packaging and composite materials, while avoiding the use of chlorinated compounds.
Implementation Method 1
Radiation curable compositions comprising at least one (meth)acrylated compound (A)... prepared from a polyol component (i) comprising at least one cyclic ether polyol... and from a polyacid component (ii)
Data Source
AI summary
The present invention relates to a radiation curable composition comprising at least one (meth)acrylated compound compound (A); and at least one inert polyester (B) that is prepared from a (i) polyol component comprising at least one cyclic ether polyol and (ii) from a polyacid component. The present invention further relates to their preparation and uses.