Ester Plasticizer Transesterification Without Catalyst

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Solution Overview

Problem

Current ester plasticizers, such as di-2-ethylhexyl phthalate, pose environmental hazards and limit resin processability and foamability, necessitating the development of an environmentally friendly alternative with improved properties.

Innovation Solution

A novel method involving a transesterification reaction between specific alkyl and alkoxy compounds to produce ester plasticizers without catalysts, enhancing processability and foamability while minimizing wastewater issues.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If di-2-ethylhexyl phthalate is used as an ester plasticizer, then plasticizer properties are achieved, but environmental harm and limitations in resin processability occur

Engineering Contradiction:

Improveplasticizer propertiesVSAvoidenvironmental harm

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical structure parameters of the plasticizer by using transesterification reaction with specific alcohol ratios and reaction conditions to produce novel ester plasticizers with improved environmental compatibility while maintaining plasticizer properties

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent converts the harmful environmental properties of conventional plasticizers into beneficial eco-friendly properties by developing new ester plasticizers through transesterification that are environmentally friendly while maintaining or improving plasticizer performance

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

2Ease of manufacture

If acid catalyst is used in esterification reaction, then ester plasticizer can be prepared, but wastewater problems and catalyst limitations occur

Engineering Contradiction:

Improveester plasticizer preparationVSAvoidwastewater problems

Core Design Contradiction:

Ease of manufactureVSObject-generated harmful factors

Solution Approach 1:

The patent extracts and eliminates the acid catalyst from the esterification process by using transesterification reaction that proceeds without catalyst, thereby removing the source of wastewater contamination while maintaining manufacturing capability

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent replaces the chemical catalysis mechanism with a direct transesterification mechanism that does not require acid catalyst, substituting a process that generates wastewater with one that is environmentally cleaner

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 method yields ester plasticizers with high purity and efficiency, improving resin processability and foamability without catalyst-related limitations and environmental concerns.

Implementation Method 1

conducting a transesterification reaction of a compound of Chemical Formula 1 with a first alcohol of Chemical Formula 2

Methodology Applied

Scientific EffectTransesterification reaction: Chemical Bonding

Data Source

PatentEP2851393B1Method for preparing ester-based plasticizer, and ester-based plasticizer prepared thereby

Publication Date: 2016.12.07 LG CHEM LTD

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AI summary

Provided is a method of preparing an ester plasticizer, more particularly, a method of preparing an ester plasticizer including conducting a transesterification reaction of a compound of Chemical Formula 1 with a first alcohol of Chemical Formula 2. According to the preparation method according to an embodiment of the present invention, an ester plasticizer having high purity, yield, and process efficiency as well as excellent plasticizer properties such as processability and absorption rate may be easily prepared even under no catalyst.