Ester-Based Plasticizer for PVC Heat Resistance
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Solution Overview
Problem
Conventional ester-based plasticizers for polyvinyl chloride (PVC) resin exhibit inferior plasticization efficiency, migration resistance, and heat stability, and there is a need for an eco-friendly, non-phthalate-based alternative that improves processability and heat resistance.
Innovation Solution
A novel ester-based compound represented by Chemical Formula 1, which includes a combination of substituents from monohydric and polyhydric alcohols, is used as a plasticizer, formulated into a composition with a transesterification reaction, and blended with vinyl chloride-based resin, along with additives like heat stabilizers and fillers, to enhance heat resistance and compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional ester-based plasticizers (DOTP, DEHP, DINP, etc.) are used to plasticize PVC resin, then the resin gains flexibility and processability, but the plasticizer shows inferior migration resistance, heat stability, and plasticization efficiency
Solution Approach 1:
The patent modifies the molecular structure parameters of conventional ester-based plasticizers by introducing specific substituent groups (such as alkyl chains with 6-12 carbon atoms, cycloaliphatic groups, or aromatic groups) at the 3 and 5 positions of the phthalate core structure. These structural parameter changes enhance the plasticizer's molecular weight and intermolecular interactions, thereby improving migration resistance while maintaining flexibility and processability
Solution Approach 2:
The invention creates composite plasticizer molecules by combining a phthalate core structure with diverse substituent groups (alkyl, cycloaliphatic, aromatic combinations). This composite molecular design allows the plasticizer to simultaneously exhibit good compatibility with PVC resin for processability while achieving superior migration resistance through enhanced molecular stability and size
2Ease of operation
If conventional ester-based plasticizers are used to plasticize PVC resin, then the resin becomes flexible, but the plasticizer exhibits poor heat stability and high volatility loss
Solution Approach 1:
The patent increases the thermal stability parameter of plasticizers by introducing bulky substituent groups (cycloaliphatic groups like adamantyl or norbornyl, or aromatic groups) that raise the glass transition temperature and reduce volatility. These structural modifications maintain the plasticizing effect for flexibility while significantly improving heat resistance and reducing volatility loss
3Reliability
If terephthalate-based plasticizers are used to improve quality characteristics, then some properties improve, but there is a limitation in improving quality by the basic structure of terephthalate
Solution Approach 1:
The patent creates versatile plasticizer molecules by combining phthalate core structures with multiple types of substituent groups (alkyl, cycloaliphatic, aromatic) in various combinations. This composite approach overcomes the limitations of single-structure terephthalate-based plasticizers by allowing customization of molecular properties to achieve different quality characteristics including migration resistance, heat stability, and plasticization efficiency
Data Source
AI summary
Provided are a novel ester-based compound and a use thereof. A use of a novel ester-based compound for improving heat resistance and compatibility as a plasticizer is provided. When the ester-based compound according to the present invention is used as the plasticizer of a heat-resistant resin composition, a synergistic effect on improvement of physical properties such as migration resistance and heating loss is provided to contribute to improvement of the physical properties of a molded article, and due to a rapid absorption rate and a short melting time, processability of the heat-resistant resin composition may be improved.