Composite Plasticizer Composition for Faster Gelation and Lower Viscosity
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Solution Overview
Problem
There is a continuous need to improve the properties of C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid when used as plasticizers, as existing formulations do not meet the varied requirements of different applications.
Innovation Solution
A plasticizer composition is developed containing C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid, combined with dibutyl terephthalate or dipentyl terephthalate, and optionally epoxidized oils or esters, along with additional plasticizers, to enhance properties such as thermal stability and mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid are used as plasticizers, then basic plasticizing function is provided, but thermal stability and mechanical properties are insufficient
Solution Approach 1:
The patent combines C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid with dibutyl terephthalate or dipentyl terephthalate to create a composite plasticizer formulation. This composite approach leverages the complementary properties of both plasticizer types to achieve superior thermal stability and mechanical properties that neither component could provide alone, directly resolving the contradiction between basic plasticizing function and enhanced reliability.
Solution Approach 2:
The patent modifies the chemical composition parameters by introducing specific ratios of different plasticizer components and incorporating epoxidized oils or esters. These parameter changes in the plasticizer formulation enable improved thermal stability and mechanical properties while maintaining adaptability across different polymer applications.
2Productivity
If existing plasticizer formulations are used, then simplicity is maintained, but gelation speed and viscosity control are inadequate
Solution Approach 1:
The patent introduces epoxidized oils or epoxidized esters as intermediary components that mediate between the C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid and dibutyl terephthalate or dipentyl terephthalate. These intermediaries facilitate faster gelation and improve viscosity control by enhancing the interaction between plasticizer and polymer matrix, achieving improved productivity while managing the increased composition complexity.
3Temperature
If single-component plasticizers are used, then ease of use is maintained, but glass transition temperature reduction and performance enhancement are limited
Solution Approach 1:
The patent merges multiple plasticizer components (C4 to C9 alkyl esters of 1,2,4-cyclohexanetripropionic acid, dibutyl terephthalate, dipentyl terephthalate, and epoxidized oils/esters) into a unified formulation. This merging achieves synergistic effects that significantly reduce glass transition temperature and enhance overall performance, while the combined formulation is designed to maintain ease of operation through compatible component selection and optimized ratios.
Data Source
AI summary
The present invention relates to a plasticizer composition comprising a compound of formula (1) wherein the three alkyl groups R each have 4 to 9 carbon atoms, and dibutyl terephthalate or dipentyl terephthalate.