Fluorine-Containing Branched Polymer Resin Miscibility

Solution Overview

Problem

Linear fluorinated polymers have poor miscibility and solubility in resins, leading to phase separation and transparency issues in thermoplastic transparent resins, and difficulty in applying them as surface modifiers for photocurable or thermosetting resins.

Innovation Solution

A fluorine-containing highly branched polymer is developed by polymerizing monomers with fluoroalkyl groups, allowing for improved solubility and miscibility in resins, preventing aggregation, and enhancing surface modification properties while maintaining transparency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If linear fluorinated polymers are used as surface modifiers, then surface modification properties are achieved, but miscibility and solubility in resins deteriorate, causing phase separation and transparency issues

Engineering Contradiction:

Improvesurface modification propertyVSAvoidmiscibility in resin

Core Design Contradiction:

ReliabilityVSStability of the object's composition

Solution Approach 1:

The invention changes the molecular architecture parameter from linear to highly branched structure. This structural parameter change fundamentally alters the polymer's interaction with resin matrices, enabling excellent miscibility and solubility while preserving surface modification properties. The highly branched structure reduces molecular weight and increases free volume, allowing better integration into transparent resins without phase separation.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite system by combining fluorinated functional groups with a highly branched polymer backbone. This composite structure integrates the low surface energy characteristics of fluorinated compounds with the excellent processability and miscibility of branched polymer architectures, achieving both surface modification effectiveness and transparency in resin systems.

Inventive Principle:

Principle #40Composite materials

2Reliability

If linear fluorinated polymers are used, then surface modification is achieved, but solubility in organic solvents deteriorates, making application to photocurable or thermosetting resins difficult

Engineering Contradiction:

Improvesurface modification propertyVSAvoidsolubility in organic solvent

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The invention changes the molecular architecture parameter from linear to highly branched structure. This structural parameter change fundamentally alters the polymer's interaction with resin matrices, enabling excellent miscibility and solubility while preserving surface modification properties. The highly branched structure reduces molecular weight and increases free volume, allowing better integration into transparent resins without phase separation.

Inventive Principle:

Principle #35Parameter changes

3Reliability

If fluorinated polymers are blended with thermoplastic transparent resins, then surface properties are improved, but transparency deteriorates due to phase separation

Engineering Contradiction:

Improvesurface propertyVSAvoidtransparency

Core Design Contradiction:

ReliabilityVSIllumination intensity

Solution Approach 1:

The invention changes the molecular architecture parameter from linear to highly branched structure. This structural parameter change fundamentally alters the polymer's interaction with resin matrices, enabling excellent miscibility and solubility while preserving surface modification properties. The highly branched structure reduces molecular weight and increases free volume, allowing better integration into transparent resins without phase separation.

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 fluorine-containing highly branched polymer exhibits excellent miscibility and dispersibility in resin matrices, forming transparent resin-molded articles with enhanced surface modification properties, including mold release, water-repellent, and anti-fouling properties.

Implementation Method 1

there is disclosed a method for polymerizing a monomer having two or more radical polymerizable double bonds in the presence of a radical polymerization initiator

Methodology Applied

Scientific EffectRadical polymerization: Photopolymerisation

Data Source

PatentUS10227457B2Fluorine-containing highly branched polymer and resin composition containing the same

Publication Date: 2019.03.12 NISSAN CHEM CORP

AI summary

It is an object to provide a compound that can provide a molded article and a coating film excellent not only in solubility in an organic solvent, but also in miscibility with/dispersibility in a matrix resin, causing no aggregation in a matrix resin, excellent in surface modification property, and having high transparency. A fluorine-containing highly branched polymer obtained by polymerizing a monomer A having two or more radical polymerizable double bonds in the molecule thereof with a monomer B having a fluoroalkyl group and at least one radical polymerizable double bond in the molecule thereof in the presence of a polymerization initiator C in a content of 5% by mol or more and 200% by mol or less, based on the total molar amount of the monomer A and the monomer B; and a resin composition comprising the polymer.