Redox-Cured Syrup Layers for Room-Temperature Polymer Curing
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Solution Overview
Problem
Existing methods for producing cured products using solvent-type compositions require high temperature or UV irradiation, which can damage applied devices and cause contamination issues, and solventless alternatives struggle to replicate the physical properties of solvent-based systems.
Innovation Solution
A method utilizing an inert redox initiator system at room temperature to initiate radical polymerization in a curable composition, comprising a curable syrup with specific initiator components, including a reducing agent, oxidizing agent, and metal compounds, to form a cured product without separate heat or UV irradiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high temperature or UV irradiation is used for curing solvent-type compositions, then curing can be achieved, but the device is damaged and physical properties are lowered
Solution Approach 1:
The patent changes the curing parameters from high temperature or UV irradiation to room temperature by introducing a redox initiator system. This allows the curable composition to cure at lower temperatures (around 25°C) without damaging the device, while still achieving complete curing through the redox reaction between the oxidizing agent and reducing agent.
Solution Approach 2:
The patent replaces the thermal/photonic curing mechanism (high temperature or UV irradiation) with a chemical redox mechanism. The redox initiator system generates radicals through chemical reaction between oxidizing and reducing agents, substituting the need for external energy input and thereby protecting the device from thermal or UV damage.
2Reliability
If high temperature or UV irradiation is used for curing, then curing process can be completed, but contamination and gas generation occur
Solution Approach 1:
The patent changes the curing conditions from high energy input (temperature/UV) to room temperature redox curing. This parameter change eliminates the need for solvent volatilization and high energy processes, thereby preventing contamination and gas generation while still achieving complete curing through the redox polymerization mechanism.
Solution Approach 2:
The patent converts the potential harm of solvent-type compositions (which require high temperature/UV and cause contamination) into a benefit by developing a solventless composition with redox initiator. The redox system not only eliminates solvent-related contamination but also provides controlled radical generation for complete curing without harmful byproducts.
3Object-generated harmful factors
If solventless composition is used to avoid contamination, then environmental issues are reduced, but physical properties like solvent-type composition are difficult to achieve
Solution Approach 1:
The patent uses a composite curable composition containing multiple components: curable syrup (monomers/oligomers), oxidizing agent, reducing agent, and optional metal compound. This composite formulation achieves both the environmental benefit of being solventless and the mechanical performance comparable to solvent-type compositions through synergistic interactions among components.
Solution Approach 2:
The patent changes the physical state and composition parameters by formulating a solventless system with specific viscosity control (1,000-5,000 cps) and optimized ratios of curable syrup, oxidizing agent, and reducing agent. These parameter changes enable the solventless composition to achieve proper flow, adhesion, and final cured properties matching or exceeding solvent-type systems.
4Reliability
If redox initiator system is used at room temperature, then device damage is avoided, but curing rate control is needed
Solution Approach 1:
The patent incorporates feedback control through the redox reaction mechanism itself, where the radical generation rate is automatically regulated by the reaction between oxidizing and reducing agents. The metal compound (when used) further modulates this feedback, allowing the curing rate to self-regulate at optimal levels without requiring external control, thus maintaining both device safety and productive curing speed.
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 method produces a cured product with desired physical properties, avoiding device damage and solvent-related issues, while maintaining compatibility and reactivity, and allows for solventless production with controlled curing rates.
Implementation Method 1
radical polymerization is initiated by a redox initiator at room temperature, and specifically, means that free radicals generated according to the redox reaction of the initiator initiate radical polymerization through an electron transfer reaction
Implementation Method 2
free radicals generated according to the redox reaction of the initiator initiate radical polymerization through an electron transfer reaction
Data Source
AI summary
The present disclosure provides a method for producing a cured product using an inert redox initiator system, and a cured product resulting therefrom. Specifically, the method for producing a cured product according to the present disclosure comprises a step of contacting a layer of a curable composition including a curable syrup and a first initiator component with a layer of a second initiator component of a film including the layer of the second initiator component on a surface thereof to perform curing the curable composition, and is characterized in that the initiator component is an inert redox initiator system comprising an oxidizing agent and a reducing agent, the reducing agent comprises a metal compound, and the metal compound is included in an effective amount only in any one of the layer of the second initiator component on the film or the layer of the curable composition.