Phosphorus Flame Retardant Composition for Low-Dielectric Resin

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing technologies have not effectively addressed the challenges of providing a resin composition with improved flame retardancy, electrical properties, and heat resistance, moisture absorption resistance, and hydrolysis resistance, which existing technologies have not effectively addressed the challenges of providing a resin composition with improved flame retardancy, electrical properties, and moisture absorption resistance, and hydrolysis resistance, and hydrolysis resistance, which existing technologies have not effectively addressed the challenges of providing a resin composition with improved flame retardancy, electrical properties, and moisture absorption resistance.

Innovation Solution

A phosphorus compound represented by chemical formula (I) is synthesized by reacting a p-vinylphenol compound with phosphoryl chloride, which contains three reactive vinyl groups and phosphorus in the molecule, enhancing flame retardancy, electrical characteristics, heat resistance, and moisture absorption resistance when used as a flame retardant in resin compositions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a conventional phosphorus compound with vinyl groups is used as a flame retardant, then flame retardancy and heat resistance are improved, but electrical properties (dielectric tangent) and moisture absorption resistance deteriorate

Engineering Contradiction:

Improveheat resistanceVSAvoidelectrical properties

Core Design Contradiction:

TemperatureVSReliability

Solution Approach 1:

The patent changes the molecular structure parameters of the phosphorus compound by introducing p-vinylphenyl groups with specific ortho-substituents (R1 groups). This structural modification alters the compound's properties to achieve both improved heat resistance and electrical characteristics simultaneously, resolving the contradiction between these two parameters.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The phosphorus compound combines multiple functional groups (phosphorus flame retardant groups, vinyl reactive groups, and p-vinylphenyl structural groups) into a single composite molecular structure. This composite approach allows the compound to exhibit multiple desirable properties including flame retardancy, heat resistance, and improved electrical properties that individual groups cannot achieve alone.

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If a conventional phosphorus compound is used as a flame retardant, then flame retardancy is improved, but moisture absorption resistance and hydrolysis resistance deteriorate

Engineering Contradiction:

Improveflame retardancyVSAvoidmoisture absorption resistance

Core Design Contradiction:

Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent modifies the molecular structure parameters by incorporating p-vinylphenyl groups with ortho-substituents, which changes the compound's chemical properties to resist moisture and hydrolysis while maintaining flame retardancy. The specific structural parameters (R1 groups at ortho positions) are optimized to achieve this dual performance.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If the phosphorus compound structure is simplified for ease of manufacture, then manufacturing cost is reduced, but flame retardancy and electrical properties deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidflame retardancy

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The patent optimizes the molecular structure parameters to achieve the desired performance with reasonable manufacturing complexity. The p-vinylphenyl structure with ortho-substituents provides the necessary performance while maintaining feasibility for industrial synthesis through established chemical processes.

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 phosphorus compound provides a cured resin product with excellent flame retardancy, low dielectric tangent, heat resistance, and resistance to moisture absorption and hydrolysis, making it suitable for use in printed wiring boards and adhesives.

Implementation Method 1

a phosphorus compound that can be obtained by reacting a certain type of a p-vinylphenol compound with phosphoryl chloride, and completed the present invention. Specifically, a first invention relates to a phosphorus compound represented by chemical formula (I): wherein each R1

Methodology Applied

Scientific EffectPolymerization: Photopolymerisation

Data Source

PatentEP4663646A1Phosphorus compound, method for synthesizing same, and use therefor

Publication Date: 2025.12.17 SHIKOKU CHEM CORP

Figure 1

AI summary

The present invention provides a novel phosphorus compound, a method for synthesizing the compound, a flame retardant containing the compound, and a resin composition containing the compound and a resin component. Further, the present invention provides a prepreg, metal foil with resin, a thermosetting resin film, a metal-clad laminate, a printed wiring board, and an adhesive, each containing the resin composition. The present invention relates to, for example, a phosphorus compound represented by chemical formula (I): wherein each R1 represents C1-10 alkyl, each R2 represents C1-10 alkyl, and each R3 is the same or different and represents hydrogen or C1-10 alkyl.