Reactive Resin Mortar Composition for High-Temperature Fastening

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Solution Overview

Problem

Existing chemical fastening assemblies using acrylate-based reactive resins face performance degradation at elevated temperatures, leading to reduced mechanical strength and adhesion, and pose health hazards due to their reactivity and hydrolysis under basic conditions.

Innovation Solution

Incorporation of tris-[(methacryloyloxy)-alkyl]-isocyanuric acids into the reactive resin component, which enhances cross-linking density and stability, maintaining reactivity at room temperature while improving performance at elevated temperatures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Speed

If acrylate-based reactive resins are used in chemical fastening assemblies, then reactivity and curing speed are improved, but performance at elevated temperatures deteriorates due to lower glass transition temperature and polymer network weakening

Engineering Contradiction:

Improvecuring speedVSAvoidperformance at elevated temperatures

Core Design Contradiction:

SpeedVSReliability

Solution Approach 1:

The patent changes the chemical composition parameters by incorporating methacrylate-based reactive resins with higher glass transition temperatures and introducing cross-linking agents to modify the polymer network structure, thereby improving high-temperature performance while maintaining reactivity

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite resin system combining methacrylate-based reactive resin with cross-linking agents and optional fillers to achieve both fast curing and high-temperature stability, effectively merging the advantages of different material components

Inventive Principle:

Principle #40Composite materials

2Strength

If acrylate-based reactive resins are used, then adhesion and mechanical strength are improved, but stability under basic conditions deteriorates due to hydrolysis

Engineering Contradiction:

Improveadhesion and mechanical strengthVSAvoidstability under basic conditions

Core Design Contradiction:

StrengthVSStability of the object's composition

Solution Approach 1:

The patent changes the chemical resistance parameters by selecting methacrylate-based resins with inherent resistance to base hydrolysis and incorporating cross-linking agents that form stable networks resistant to alkaline degradation, thereby maintaining both strength and chemical stability

Inventive Principle:

Principle #35Parameter changes

3Strength

If certain acrylate compounds are used to achieve desired performance, then mechanical properties are improved, but health hazards increase requiring labeling

Engineering Contradiction:

Improvemechanical propertiesVSAvoidhealth hazards

Core Design Contradiction:

StrengthVSObject-affected harmful factors

Solution Approach 1:

The patent replaces hazardous acrylate compounds with safer methacrylate-based alternatives that achieve comparable mechanical properties without requiring health hazard labeling, effectively substituting dangerous materials with safer ones

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the chemical safety parameters by selecting methacrylate compounds with lower toxicity and hazardous properties while maintaining or improving mechanical performance characteristics

Inventive Principle:

Principle #35Parameter changes

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 tris-[(methacryloyloxy)-alkyl]-isocyanuric acids in reactive resin systems results in higher bond failure stress at elevated temperatures and reduces health risks, ensuring robust mechanical performance and safety.

Implementation Method 1

By mixing the two components, the curing 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 use of tris-[(methacryloyloxy)-alkyl]-isocyanuric acids as radically curable compounds in the reactive resin component of the multicomponent reactive resin system can improve the performance of a fastening assembly at elevated temperatures

Methodology Applied

Scientific EffectThermal stability:

Data Source

PatentEP4574791A1Use of tris-[(methacryloyloxy)alkyl - isocyanuric acids in reactive resin compositions and in reactive resin multicomponent systems obtained

Publication Date: 2025.06.25 HILTI AG

AI summary

The present invention relates to the use of tris-[(methacryloyloxy)-alkyl]-isocyanuric acids as radically curable compounds in reactive resin compositions and in multicomponent reactive resin systems obtained therefrom. The use of tris-[(methacryloyloxy)-alkyl]-isocyanuric acids as radically curable compounds in the reactive resin component of the multicomponent reactive resin system can improve the performance of a fastening assembly at elevated temperatures. The fastening assembly comprises a reactive resin mortar produced from the multicomponent reactive resin system according to the invention and a fastening agent.