Phthalonitrile Resin Self-Curing Low-Temperature Curing Agent

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Solution Overview

Problem

Existing phthalonitrile resin production methods require external curing agents, which can lead to defects and reduced physical properties, and lack efficient low-temperature curing capabilities.

Innovation Solution

A phthalonitrile resin comprising polymerized units derived from a specific phthalonitrile compound (Formula 1) that can self-cure or act as a curing agent, allowing for high-speed curing at low temperatures without external agents, and forming a resin with excellent physical properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If external curing agents are used in phthalonitrile resin production, then the resin can be cured, but physical properties deteriorate and defects occur

Engineering Contradiction:
Improvephysical propertiesVSAvoiddefects
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The phthalonitrile compound is designed to possess intrinsic curing capability through its molecular structure containing reactive functional groups. The compound can autonomously undergo polymerization and crosslinking reactions without requiring external curing agents, thereby eliminating the harmful effects associated with conventional curing agents while maintaining reliable physical properties

Inventive Principle:
Principle #25Self-service

2Productivity

If conventional curing methods are used, then curing can be achieved, but high temperatures are required and curing speed is slow

Engineering Contradiction:
Improvecuring speedVSAvoidcuring temperature
Core Design Contradiction:
ProductivityVSTemperature

Solution Approach 1:

The molecular structure of the phthalonitrile compound is optimized with specific functional groups that lower the activation energy of curing reactions. This structural modification enables the resin to cure at reduced temperatures while significantly increasing curing speed, transforming the traditional high-temperature slow-curing process into a low-temperature rapid-curing process

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 phthalonitrile resin exhibits rapid curing at low temperatures, maintains high cure density, and prevents physical property deterioration, enabling the production of reinforced composites for applications like automobiles and aircraft without the need for additional curing agents.

Implementation Method 1

a phthalonitrile resin comprising polymerized units derived from a phthalonitrile compound

Methodology Applied
Scientific EffectPolymerization: Chemical Bonding

Implementation Method 2

rapid curing at low temperatures, maintains high cure density

Methodology Applied
Scientific EffectCuring reaction: Chemical Bonding

Data Source

PatentEP3354638B1Phthalonitrile compound
Publication Date: 2022.09.07 LG CHEM LTD
  • EP3354638B1 patent drawingFigure 1~2
  • EP3354638B1 patent drawingFigure 3~4
  • EP3354638B1 patent drawingFigure 5~6

AI summary

The present application can provide a phthalonitrile compound and a use thereof. The present application can provide a phthalonitrile compound capable of forming a phthalonitrile resin by self-curing or of serving as a curing agent after being mixed with another phthalonitrile compound, and a use of the phthalonitrile compound. The phthalonitrile compound can form a phthalonitrile resin by rapid self-curing even at a low temperature and does not create any defects resulting from the use of a conventional curing agent. Also, the phthalonitrile compound can be applied as a curing agent after being mixed with another compound, in which case, even if the content of the compound applied as a curing agent increases, the total content of the phthalonitrile resin obtained does not decrease, and thus a resin exhibiting an excellent degree of cure can be provided.