Epoxide-acrylate hybrid molecules for fast low-temperature curing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing multi-component reactive resin compositions for chemical anchoring have slow curing times at low temperatures, and the cured mortars show low stability under basic conditions, such as those found in concrete or plaster.
Innovation Solution
The use of epoxide-acrylate hybrid molecules as pure resins with an amine hardener accelerates the curing process, and when incorporated into a multi-component reactive resin composition, it enhances the curing speed and stability under basic conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If glycidyl-based reactive diluents (such as TMPTGE) are used to adjust viscosity, then processability is improved, but corrosive and CMR properties are introduced
Solution Approach 1:
The patent changes the chemical structure parameter of the reactive diluent from glycidyl-based to carboxylate-based groups. This parameter change maintains the viscosity-adjusting function while eliminating the harmful corrosive and CMR properties associated with glycidyl compounds.
Solution Approach 2:
The patent replaces expensive and harmful glycidyl-based reactive diluents with simpler, safer carboxylate-based alternatives that achieve the same functional purpose without the adverse health and environmental effects.
2Ease of operation
If epoxy resins and glycidyl-based reactive diluents are used, then viscosity is reduced for better processability, but curing time is prolonged at low temperatures
Solution Approach 1:
The patent changes the functional groups from glycidyl to carboxylate, which alters the reaction kinetics. The carboxylate groups enable faster curing reactions at low temperatures while maintaining the viscosity-reducing effect during application.
Solution Approach 2:
The patent creates a composite resin system combining epoxy resins with carboxylate-containing compounds, achieving synergistic effects where the carboxylate groups accelerate curing at low temperatures while the overall composition maintains suitable viscosity for processing.
3Productivity
If acrylates are used in epoxy resin mixtures to accelerate curing, then curing speed is improved, but stability under basic conditions deteriorates
Solution Approach 1:
The patent extracts the harmful acrylate groups from the system while retaining the beneficial fast-curing effect through carboxylate groups, which do not suffer from hydrolysis under basic conditions like concrete.
Solution Approach 2:
The patent uses carboxylate groups as an intermediary that mediates between the need for fast curing and the need for stability under basic conditions. The carboxylate groups enable rapid reaction with amine hardeners while being resistant to hydrolysis in alkaline environments.
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 epoxide-acrylate hybrid molecules significantly accelerate the curing speed of multi-component reactive resin compositions, especially at low temperatures, and improve the stability of cured mortars under basic conditions, comparable to or exceeding that of compositions using traditional epoxy resin mixtures with glycidyl-based reactive diluents.
Implementation Method 1
epoxide-acrylate hybrid molecules comprising a polyol backbone and bearing at least one epoxy group and at least one acrylate group
Data Source
AI summary
The present invention relates to epoxide-acrylate hybrid molecules, and their use in the resin component of a multi-component reactive resin composition for chemical anchoring. Furthermore, the invention relates to a multi-component reactive resin composition comprising these epoxide-acrylate hybrid molecules, and to the use of such a multi-component reactive resin composition for chemical anchoring.