Vinyl Ester Resin Mixture with Itaconic Acid Esters

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Solution Overview

Problem

The existing resin mixtures for chemical fastening technology, based on fossil raw materials, face challenges with storage stability and reactivity, particularly when using vinyl ester resins, as they may not be sustainable in the long term due to the depletion of fossil sources and can have inconsistent curing properties.

Innovation Solution

A resin mixture comprising a vinyl ester resin and a copolymerizable compound with at least two methacrylate groups, where the copolymerizable compound is partially or completely replaced by itaconic acid esters, which are derived from renewable resources, enhancing storage stability and reactivity while maintaining the properties of the binder.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If vinyl ester resins based on fossil raw materials are used, then the resin mixture achieves good reactivity and curing properties, but the system becomes unsustainable due to depletion of fossil sources

Engineering Contradiction:

Improvereactivity and curing propertiesVSAvoidsustainability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the chemical composition parameters by replacing fossil-based reactive diluents with itaconic acid esters derived from renewable resources. This substitution maintains the functional properties of the resin mixture while improving sustainability. The itaconic acid esters are designed to have similar molecular structures and reactivity characteristics to the original fossil-based compounds, ensuring that curing properties remain effective.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent adopts renewable raw materials that can be continuously replenished through natural processes, replacing finite fossil resources. This approach ensures long-term availability of the resin mixture components without depleting natural reserves, making the system sustainable while maintaining technical performance.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Adaptability or versatility

If itaconic acid esters are used to replace copolymerizable compounds, then sustainability is improved, but storage stability and reactivity may be compromised

Engineering Contradiction:

ImprovesustainabilityVSAvoidstorage stability and reactivity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent optimizes the molecular structure parameters of the itaconic acid esters to achieve the right balance between sustainability and performance. By carefully selecting the ester groups and controlling the degree of polymerization, the resin mixture maintains adequate storage stability and reactivity. The patent specifies particular structural characteristics of the itaconic acid esters to ensure they provide both environmental benefits and technical reliability.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If fossil-based reactive diluents are used, then the resin mixture achieves consistent curing properties, but the system becomes vulnerable to raw material availability

Engineering Contradiction:

Improvecuring properties consistencyVSAvoidraw material availability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent transitions from finite fossil-based reactive diluents to renewable itaconic acid esters that can be continuously produced from biomass sources. This substitution secures long-term raw material availability while the patent maintains curing property consistency through careful formulation and control of the itaconic acid ester characteristics.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 itaconic acid esters in the resin mixture provides storage-stable and reactive resin compositions that can replace conventional petrochemical-based systems without compromising curing properties, ensuring sustainable and effective chemical fastening solutions.

Implementation Method 1

By mixing the two components, the hardening reaction, i.e. polymerization, is initiated by radical formation and the resin is hardened to form a thermoset

Methodology Applied

Scientific EffectRadical polymerization: Photopolymerisation

Implementation Method 2

the copolymerizable compound being partially or completely replaced by an itaconic acid ester

Methodology Applied

Scientific EffectCopolymerization: Photopolymerisation

Data Source

PatentEP2912078B1Resin mixture based on vinyl ester resin, reactive resin mortar comprising same and use thereof

Publication Date: 2016.11.23 HILTI AG

AI summary

A description is given of a resin mixture comprising a vinyl ester resin and a copolymerizable compound which carries at least two methacrylate groups, some of which is replaced by an itaconic ester. Through the choice of the itaconic ester it is possible to influence the properties of the composition, such as the curing. Furthermore, resin compositions can be formulated which have a certain proportion of biobased carbon.