Plasticizer Composition for Low-Loss, Low-Migration Rapid Gelling

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Solution Overview

Problem

Existing plasticizer compositions, particularly those combining dialkyl phthalates with rapid gelling agents, exhibit application-related shortcomings such as increased mass loss and migration tendencies, which affect the stability and longevity of plasticized products.

Innovation Solution

A plasticizer composition comprising trimethyl esters of 1,2,4-cyclohexanetripropionic acid and dialkylphthalic acid esters with 9 or 10 carbon atoms, optionally with epoxidized oils or additional plasticizers, to enhance properties like thermal stability and reduce mass loss and migration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dialkyl phthalates are combined with conventional rapid gelling agents (glycol dibenzoates, C8-C10 monobenzoates, dibutyl or dipentyl terephthalates), then processing speed is increased, but mass loss and migration tendencies increase

Engineering Contradiction:

Improveprocessing speedVSAvoidmass loss

Core Design Contradiction:

ProductivityVSLoss of substance

Solution Approach 1:

The patent changes the chemical parameters of the rapid gelling agent by using trimethyl esters of 1,2,4-cyclohexanetripropionic acid instead of conventional agents. This parameter change maintains the rapid gelling effect (processing speed improvement) while reducing mass loss and migration tendencies through the unique molecular structure of the cyclohexanetripropionic acid ester

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite plasticizer system by combining dialkyl phthalates with trimethyl esters of 1,2,4-cyclohexanetripropionic acid. This composite material approach allows the synergistic effect where the phthalate provides base plasticizing properties while the cyclohexanetripropionic acid ester provides rapid gelling properties with reduced mass loss and migration

Inventive Principle:

Principle #40Composite materials

2Productivity

If dialkyl phthalates are combined with conventional rapid gelling agents, then processing speed is increased, but migration tendencies increase

Engineering Contradiction:

Improveprocessing speedVSAvoidmigration tendencies

Core Design Contradiction:

ProductivityVSObject-generated harmful factors

Solution Approach 1:

The patent changes the chemical parameters of the rapid gelling agent by using trimethyl esters of 1,2,4-cyclohexanetripropionic acid instead of conventional agents. This parameter change maintains the rapid gelling effect (processing speed improvement) while reducing migration tendencies through the unique molecular structure of the cyclohexanetripropionic acid ester

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The invention converts the potential harm of using conventional rapid gelling agents (which cause migration) into a benefit by selecting a specific chemical structure (trimethyl esters of 1,2,4-cyclohexanetripropionic acid) that provides rapid gelling action while inherently resisting migration, thus turning the challenge of finding a rapid gelling agent into an opportunity to eliminate migration issues

Inventive Principle:

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

Data Source

PatentEP4703418A1Plasticizer composition comprising trimethylester of 1,2,4-cyclohexanetripropionic acid and dialkylphthalic ester

Publication Date: 2026.03.04 EVONIK OXENO GMBH & CO KG

AI summary

The present invention relates to a plasticizer composition comprising a compound of formula (1) and at least one dialkylphthalic acid ester, wherein the two alkyl groups in the dialkylphthalic acid ester each have 9 or 10 carbon atoms.