Binder Composition Using Trimethylolethane Triglycidyl Ether

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Solution Overview

Problem

Current chemically resistant coatings for metal tanks, primarily made from novolac epoxy-based resin and resorcinol diglycidyl ether (RDGE), pose a significant health and safety risk due to the suspected carcinogenicity of RDGE, complicating their preparation and application and potentially leading to bans on use.

Innovation Solution

A binder system comprising an epoxy-based binder, trimethylolethane triglycidyl ether, a curing agent, and a homopolymerisation accelerator, where the weight percentage of trimethylolethane triglycidyl ether is higher than that of the epoxy-based binder, is developed. This system generates a tightly cross-linked polymer network, minimizing chemical absorption and offering improved health and safety profiles compared to RDGE-based systems.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If RDGE and novolac epoxy-based resin are used to achieve high chemical resistance, then the coating provides high resistance to chemical absorption, but the coating contains suspected carcinogenic compounds that complicate preparation and application

Engineering Contradiction:

Improvechemical resistanceVSAvoidcarcinogenicity

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by replacing RDGE with trimethylolethane triglycidyl ether (TMETGE) and adjusting the resin ratio to achieve high crosslinking density without carcinogenic compounds. The specific parameter change involves using TMETGE in amounts of 5-50 wt% and novolac epoxy resin in amounts of 50-95 wt% of the total epoxy resin content

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the harmful RDGE compound with safer alternative epoxy resins (novolac and trimethylolethane triglycidyl ether) that can achieve the same functional outcome (high chemical resistance) without the carcinogenic side effects, effectively discarding the harmful substance while maintaining performance

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Reliability

If high crosslinking density is achieved using RDGE and novolac epoxy resin, then the coating minimizes chemical absorption, but additional safety precautions are required during preparation and application

Engineering Contradiction:

Improvechemical absorption resistanceVSAvoidsafety precautions

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent changes the chemical composition by using novolac epoxy resin and trimethylolethane triglycidyl ether in specific ratios to achieve high crosslinking density (greater than 80%) without the need for stringent safety precautions associated with RDGE. The formulation uses these resins in combinations where novolac epoxy resin constitutes 50-95 wt% of the total epoxy resin content

Inventive Principle:

Principle #35Parameter changes

3Reliability

If RDGE-based coating systems are used to provide high chemical resistance, then the coating performs well in protecting metal tanks, but the HSE profile may cause it to be banned from use

Engineering Contradiction:

Improvechemical resistance performanceVSAvoidHSE profile

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by eliminating RDGE and using alternative epoxy resins (novolac and trimethylolethane triglycidyl ether) in specific proportions to maintain high chemical resistance performance while improving the health, safety, and environmental profile. The formulation achieves this with novolac epoxy resin at 50-95 wt% and TMETGE at 5-50 wt% of total epoxy resin content

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent replaces the problematic RDGE substance with safer alternative epoxy resins that provide equivalent or superior performance without the harmful environmental and health effects, effectively discarding the harmful substance while maintaining the protective function

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 binder system achieves high chemical resistance and a high-density polymer network, reducing chemical absorption while providing a significantly improved health and safety profile by eliminating compounds with suspected carcinogenicity, thus ensuring safer application and use.

Implementation Method 1

a curing agent; and (iv) a homopolymerisation accelerator wherein the binder system is capable of undergoing a curing reaction to form a cross-linked polymer network

Methodology Applied

Scientific EffectCuring reaction: Chemical Bonding

Implementation Method 2

a homopolymerisation accelerator wherein the binder system is capable of undergoing a curing reaction to form a cross-linked polymer network

Methodology Applied

Scientific EffectHomopolymerisation: Photopolymerisation

Data Source

PatentUS20250084275A1Binder Composition comprising Trimethyloethane Triglycidyl Ether

Publication Date: 2025.03.13 JOTUN AS

AI summary

The present subject matter relates to a binder system including an epoxy-based binder, trimethylolethane triglycidyl ether, a curing agent, and a homopolymerisation accelerator, wherein the wt % of trimethylolethane triglycidyl ether, based on the total dry weight of binder system, is higher than the wt % of epoxy-based binder, based on the total dry weight of the binder system.