Cyclohexane Polyester Plasticizer Composition

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Solution Overview

Problem

Existing plasticizer compositions, such as those based on di(2-ethylhexyl) cyclohexane 1,4-diester, face challenges with volatile loss, thermal stability, and mechanical properties like elongation rate and tensile strength, necessitating the development of a more effective and cost-competitive solution.

Innovation Solution

A plasticizer composition is developed that combines a cyclohexane polyester-based substance with a specific amount of perhydride, where the perhydride is included in an amount from 0.5 to 10 parts by weight with respect to 100 parts by weight of the cyclohexane polyester-based substance, to enhance thermal stability, mechanical properties, and cost competitiveness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If di(2-ethylhexyl) cyclohexane 1,4-diester (1,4-DEHCH) is used as a plasticizer, then plasticization efficiency is improved, but migration resistance and thermal stability deteriorate

Engineering Contradiction:

Improveplasticization efficiencyVSAvoidmigration resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The patent combines 1,4-DEHCH with a perhydride (cyclohexane carboxylic acid perhydride) to create a composite plasticizer system. This composite approach allows the mixture to achieve both good plasticization efficiency from 1,4-DEHCH and improved migration resistance and thermal stability from the perhydride component, resolving the technical contradiction between plasticization efficiency and migration resistance.

Inventive Principle:

Principle #40Composite materials

2Reliability

If hydrogenation of terephthalate-based substances is performed to improve migration resistance, then thermal stability is improved, but mechanical properties such as elongation rate deteriorate

Engineering Contradiction:

Improvemigration resistanceVSAvoidelongation rate

Core Design Contradiction:

ReliabilityVSStrength

Solution Approach 1:

The patent changes the chemical structure parameters by introducing a perhydride group (methyl group at specific positions) into the cyclohexane ring structure. This structural modification allows the plasticizer to maintain good elongation rate while achieving improved migration resistance and thermal stability, resolving the contradiction between migration resistance and mechanical properties.

Inventive Principle:

Principle #35Parameter changes

3Ease of manufacture

If simplification of purification process is implemented to reduce cost, then manufacturing cost is reduced, but product purity may deteriorate

Engineering Contradiction:

Improvemanufacturing costVSAvoidproduct purity

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent converts the perhydride byproduct (which would normally require removal during purification) into a beneficial component by intentionally including it in the plasticizer composition at controlled amounts (0.5-10 parts by weight per 100 parts of cyclohexane polyester). This approach eliminates the need for extensive purification while actually improving migration resistance and thermal stability, thus resolving the contradiction between manufacturing cost and product purity.

Inventive Principle:

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

Data Source

PatentEP3708610B2Plasticizer composition comprising cyclohexane polyester-based material, and resin composition comprising same

Publication Date: 2025.03.05 LG CHEM LTD

AI summary

Provided is a plasticizer composition to which a cyclohexane polyester-based substance is applied as a plasticizer in combination with a perhydride having a smaller number of ester groups than the cyclohexane polyester-based substance, so that volatile loss, thermal stability, and mechanical properties such as an elongation rate and tensile strength are improved.