Isophthalate Plasticizer Composition for PVC
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Solution Overview
Problem
Current plasticizers used in PVC resins, such as DEHP and DINP, are harmful to the environment and human health, and they have limitations in improving processability, absorption rate, migration resistance, and heat stability.
Innovation Solution
A plasticizer composition comprising a hybrid type isophthalate compound and at least two non-hybrid type isophthalate compounds, obtained through an esterification reaction of isophthalic acid with specific alcohols, offering improved tensile strength, elongation rate, and processability while minimizing migration and volatile loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional plasticizers such as DEHP, DINP, DPHP, or DIDP are used, then flexibility is improved, but environmental harm and health risks increase
Solution Approach 1:
The patent changes the chemical structure parameters of the plasticizer by using isophthalic acid instead of phthalic acid, and by controlling the alcohol components to have specific carbon chain lengths (C8-C11) and structures (linear or branched). This parameter change maintains the plasticizing effect while eliminating the environmental harm associated with conventional phthalate plasticizers
Solution Approach 2:
The patent employs a composite plasticizer system consisting of multiple components: isophthalic acid esters with specific alcohol components (C8-C11 linear or branched alcohols). This composite approach achieves synergistic effects that provide both flexibility and improved environmental compatibility
2Ease of operation
If conventional plasticizers are used, then flexibility is improved, but migration resistance deteriorates
Solution Approach 1:
The patent optimizes the molecular weight and chemical structure parameters of the plasticizer by selecting specific alcohols with 8-11 carbon atoms. This parameter optimization increases the molecular weight and improves intermolecular interactions with the polymer matrix, thereby reducing migration while maintaining flexibility
3Ease of operation
If conventional plasticizers are used, then flexibility is improved, but heat stability deteriorates
Solution Approach 1:
The patent uses a composite plasticizer system with isophthalic acid esters that have superior thermal stability compared to conventional phthalates. The specific molecular structure with isophthalic acid core and C8-C11 alcohol chains provides both flexibility and enhanced heat resistance through stronger intermolecular forces and higher decomposition temperature
4Ease of operation
If conventional plasticizers are used, then flexibility is improved, but absorption rate deteriorates
Solution Approach 1:
The patent optimizes the molecular size and polarity parameters of the plasticizer by selecting alcohols with 8-11 carbon atoms. This parameter optimization improves the compatibility and diffusion rate of the plasticizer into the polymer matrix, thereby enhancing the absorption rate while maintaining the desired flexibility
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 proposed plasticizer composition enhances the physical properties of PVC resins, including tensile strength, elongation rate, and migration resistance, while reducing volatile loss and improving processability, making it more eco-friendly and efficient.
Implementation Method 1
a plasticizer composition comprising a hybrid type isophthalate compound of formula 1 and at least two non-hybrid type isophthalate compounds of formulae 2 and 3, wherein the hybrid type isophthalate compound and the non-hybrid type isophthalate compounds are obtained by an esterification reaction of isophthalic acid with specific alcohols
Data Source
AI summary
Provided are an isophthalate-based ester compound, a plasticizer composition comprising same, a method for manufacturing the plasticizer composition, and a resin composition comprising the plasticizer composition. When used in a resin composition, the novel ester compound is environmentally friendly and can provide excellent physical characteristics, such as excellent plasticizing efficiency, tensile strength, and elongation, as well as penetration resistance and volatility resistance.