Bio-Based Reactive Resin Composition With Stable Curing Reactivity
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Solution Overview
Problem
There is a need for reactive resin systems based on renewable raw materials to replace fossil-based components, ensuring storage stability and reactivity in chemical fastening technologies, as fossil raw materials are depleting and existing biogenic resin compositions may not consistently guarantee reactivity and curing properties.
Innovation Solution
A reactive resin comprising a vinyl ester resin as the base resin and an oligomeric itaconic acid ester as a reactive diluent, synthesized through melt polycondensation, which increases the bio-based content and maintains the curing properties without negatively affecting the resin's performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If biogenic starting materials such as itaconic acid esters are used to replace fossil-based reactive diluents, then the renewable raw material content is improved, but the reactivity and curing properties may deteriorate
Solution Approach 1:
The patent applies parameter changes by carefully controlling the degree of polycondensation (n value) of the itaconic acid ester oligomers. By adjusting the oligomerization degree and molecular weight parameters, the resin achieves both high biogenic content and reliable reactivity. The specific parameter range of n=2-20 optimizes the balance between renewable content and curing performance
Solution Approach 2:
The patent creates a composite resin system combining vinyl ester base resin with oligomeric itaconic acid esters. This composite approach allows the biogenic oligomers to serve as reactive diluents while maintaining the overall curing properties through synergistic interaction between the different resin components
2Adaptability or versatility
If fossil-based reactive diluents are replaced with biogenic alternatives, then sustainability is improved, but storage stability may worsen
Solution Approach 1:
The patent applies preliminary action by pre-synthesizing and stabilizing the itaconic acid ester oligomers before final resin formulation. The oligomers are prepared with controlled molecular weights and functional groups in advance, ensuring they are ready to react properly when mixed with the base resin and curing agents, thus maintaining storage stability
Solution Approach 2:
The oligomeric itaconic acid esters act as intermediary substances between the fossil-based diluents and the biogenic base resin. These intermediaries provide the necessary reactive functionality while maintaining compatibility and stability in the overall resin system
3Adaptability or versatility
If conventional petrochemical components are replaced with bio-based components, then environmental friendliness is improved, but bond strength may deteriorate
Solution Approach 1:
The patent optimizes bond strength by carefully adjusting the oligomer composition parameters, including the ratio of itaconic acid ester to base resin (5-50 wt%), the degree of esterification, and the molecular weight distribution. These parameter optimizations ensure that the bio-based resin achieves bond strength comparable to conventional petrochemical 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 use of oligomeric itaconic acid esters as reactive diluents in the reactive resin system provides storage-stable and reactive bio-based components, allowing for the replacement of conventional petrochemical-based components without compromising the curing properties or bond strength, thus addressing the depletion of fossil raw materials and ensuring sustainable chemical fastening systems.
Implementation Method 1
synthesized through melt polycondensation
Implementation Method 2
the curing reaction, i.e. the polymerization, is initiated by radical formation and the resin is cured to obtain duromers
Data Source
AI summary
A reactive resin includes a vinyl ester resin as a base resin and an oligomeric itaconic acid ester as a reactive diluent.