Styrene-Free Reactive Resin Composition for Fast Drying and Flow

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Solution Overview

Problem

Existing styrene-based reactive systems used in casting resins and repair kits pose environmental and health risks due to styrene emissions, and talc as a filler reduces flowability and increases cost, necessitating a styrene-free system with improved drying time and flowability.

Innovation Solution

A styrene-free reactive system comprising polyester(meth)acrylate, polyurethane(meth)acrylate, epoxy(meth)acrylate, or polyether(meth)acrylate polymers, (meth)acrylate monomers, thiol-containing and amine-containing polymerization accelerators, and fillers like BaSO4, Al(OH)3, and CaCO3, which minimize oxygen inhibition and enhance flowability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If styrene is used as a reactive diluent, then polymerization kinetics and mechanical properties are improved, but environmental and health hazards increase

Engineering Contradiction:

Improvepolymerization kineticsVSAvoidenvironmental and health hazards

Core Design Contradiction:

ProductivityVSObject-affected harmful factors

Solution Approach 1:

The patent removes styrene from the reactive system composition entirely, extracting the harmful substance while maintaining the essential polymerization function through alternative accelerators and resin formulations

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent changes the chemical composition parameters by substituting styrene with alternative reactive diluents and adjusting the ratios of polymer resins, hardeners, and accelerators to achieve comparable polymerization kinetics without harmful emissions

Inventive Principle:

Principle #35Parameter changes

2Strength

If talc is used as a mineral filler, then adhesion to metal and low flowability are improved, but flowability for casting applications deteriorates

Engineering Contradiction:

Improveadhesion to metalVSAvoidflowability

Core Design Contradiction:

StrengthVSEase of operation

Solution Approach 1:

The patent changes the filler composition parameters by replacing talc with alternative mineral fillers that have different rheological properties, achieving the desired balance between adhesion and flowability for casting applications

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses composite filler systems combining multiple mineral fillers with different properties to achieve both good metal adhesion and adequate flowability, rather than relying on a single filler type

Inventive Principle:

Principle #40Composite materials

3Productivity

If amine-containing polymerization accelerator is used alone, then curing speed is improved, but oxygen inhibition causes extended drying time and poor sandability

Engineering Contradiction:

Improvecuring speedVSAvoiddrying time

Core Design Contradiction:

ProductivityVSLoss of time

Solution Approach 1:

The patent combines amine-containing polymerization accelerators with thiol-containing polymerization accelerators in a synergistic formulation, where the thiol accelerator overcomes oxygen inhibition while the amine accelerator maintains fast curing speed, achieving both rapid curing and complete surface drying

Inventive Principle:

Principle #5Merging (Combining)

4Strength

If talc is used as a filler, then adhesion properties are improved, but cost increases

Engineering Contradiction:

ImproveadhesionVSAvoidcost

Core Design Contradiction:

StrengthVSEase of manufacture

Solution Approach 1:

The patent substitutes expensive talc filler with more economical mineral fillers that provide adequate adhesion performance for the intended applications, reducing material costs while maintaining functional requirements

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 system achieves rapid drying and sandability, reduces health and environmental risks, and allows for high flowability, enabling use in squeeze bottles and improved handling, with fillers like BaSO4 and CaCO3 providing better flow and cost-effectiveness compared to talc.

Implementation Method 1

reagent C, wherein reagent C comprises a thiol-containing polymerization accelerator; reagent D, wherein reagent D comprises an amine-containing polymerization accelerator

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Data Source

PatentEP4696727A1Styrene-free reactive system

Publication Date: 2026.02.18 AKEMI CHEM TECHN SPEZIALFAB

Figure 1

AI summary

The invention relates to a styrene-free reactive system, wherein the system comprises at least one component I comprising the following reagents: a reagent A, wherein reagent A comprises a polymer selected from the group consisting of polyester(meth)acrylate, polyurethane(meth)acrylate, epoxy(meth)acrylate, polyether(meth)acrylate, and mixtures and copolymers thereof and blends thereof; reagent B, wherein reagent B comprises a (meth)acrylate monomer; reagent C, wherein reagent C comprises a thiol-containing polymerization accelerator; reagent D, wherein reagent D comprises an amine-containing polymerization accelerator; reagent E, wherein reagent E comprises a filler; and wherein component I comprises talc in a quantity of less than 3% by weight.