(Meth)Acrylate Composition With Organocopper Redox Initiation
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Solution Overview
Problem
Existing acrylic adhesive systems suffer from stability issues, poor reactivity, and long open times, limiting their versatility and effectiveness in various applications.
Innovation Solution
A crosslinkable two-component composition comprising an organocopper derivative, (meth)acrylate compounds, and a specific compound of formula (VI), which initiates polymerization through a redox reaction without peroxides, allowing for rapid cohesion build-up and adaptable open times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If peroxide/amine couples are used to initiate redox reaction, then polymerization can be initiated, but stability problems occur and reactivity is poor with long open times
Solution Approach 1:
The patent changes the chemical parameters of the redox initiation system by replacing conventional peroxide/amine couples with organocopper derivatives combined with specific compounds (sulfonates, carboxylates, or phosphonates). This parameter change resolves the contradiction by providing a initiation system that maintains both stability during storage and high reactivity during application, eliminating the trade-off between the two properties.
Solution Approach 2:
The patent employs organocopper derivatives as alternative initiation systems that function effectively for the duration needed and then decompose. These compounds provide the necessary redox activity to initiate polymerization without the stability issues of peroxide systems, and their transient nature allows for controlled reaction initiation when components are mixed.
2Adaptability or versatility
If peroxide/amine couples are used to initiate redox reaction, then polymerization can be initiated, but a lack of versatility occurs
Solution Approach 1:
The patent achieves versatility through the organocopper derivative system's ability to function across multiple application scenarios and with various (meth)acrylate compounds. The organocopper derivative combined with sulfonate, carboxylate, or phosphonate compounds creates a universal initiation system that works for different adhesive formulations and applications, replacing the limited peroxide/amine system.
3Productivity
If conventional two-component acrylic systems are used, then crosslinking by radical polymerization occurs, but poor reactivity and long open times limit effectiveness
Solution Approach 1:
The patent modifies the kinetic parameters of the polymerization initiation by using organocopper derivatives with specific compounds. This changes the reaction rate profile to achieve rapid cohesion build-up while controlling the open time, resolving the contradiction between reactivity and working time. The organocopper system provides faster and more controlled initiation compared to conventional peroxide systems.
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 achieves high reactivity and rapid cohesion build-up, suitable for diverse applications, including structural bonding in transportation, marine, electronics, and construction, with improved adhesive properties and reduced open times.
Implementation Method 1
Radical polymerization is typically initiated by a redox system which, by means of an oxidation-reduction reaction, results in the production of radicals
Data Source
AI summary
Composition based on (meth)acrylate compoundsThe present invention relates to a crosslinkable two-component composition comprising:a component A comprising:an organocopper derivative;at least one (meth)acrylate compound M1;on condition that when the organocopper derivative is not halogenated, then component A also comprises a halogenated carboxylic acid;a component B comprising at least one compound having the formula (VI) below:and also to the uses thereof.