Terephthalate Ester Composition for Resin Processability
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Solution Overview
Problem
Current ester compositions, such as di(2-ethylhexyl)phthalate, used as plasticizers have environmental hormone-disrupting effects and limit the processability, absorption time, migration loss, and thermal stability of resins, necessitating an environmentally friendly alternative with improved physical properties.
Innovation Solution
An ester composition comprising terephthalate compounds with specific weight ratios of non-hybrid and non-branched, hybrid and branched, and non-hybrid and branched alkyl groups, prepared through a transesterification reaction of di(2-ethylhexyl)terephthalate with butyl alcohol, enhancing resin processability and physical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If di(2-ethylhexyl)phthalate is used as a plasticizer, then the resin can be processed, but it causes environmental hormone disruption and limits processability improvement
Solution Approach 1:
The invention changes the chemical parameters of the plasticizer by using terephthalate compounds with specific alkyl group compositions (non-hybrid non-branched, hybrid branched, and non-hybrid branched alkyl groups in defined ratios) instead of conventional phthalates. This parameter change achieves both environmental safety and improved processability simultaneously.
Solution Approach 2:
The invention employs a composite ester composition containing multiple terephthalate compounds with different alkyl group structures in specific weight ratios. This composite approach combines the advantages of different molecular structures to achieve both environmental friendliness and superior processing characteristics.
2Productivity
If conventional ester compositions are used, then manufacturing can proceed, but absorption time and fusion time are extended
Solution Approach 1:
The invention optimizes the absorption and fusion times by carefully controlling the composition parameters of terephthalate compounds with specific alkyl group ratios. The non-hybrid non-branched alkyl groups (0.5-9.5 wt%) provide rapid absorption, while the balanced composition ensures short fusion time, directly improving productivity.
3Reliability
If conventional plasticizers are used, then resin can be processed, but thermal stability is limited
Solution Approach 1:
The invention creates a composite ester composition where terephthalate compounds with different alkyl group structures work synergistically. The specific combination of non-hybrid non-branched, hybrid branched, and non-hybrid branched alkyl groups provides both excellent thermal stability and processability, resolving the contradiction between these two properties.
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 ester composition achieves a short absorption time and fusion time, improving resin processability and providing good physical properties for manufacturing various products like sheets, cables, and wallpapers, while being environmentally friendly.
Implementation Method 1
conducting a transesterification reaction of di(2-ethylhexyl)terephthalate (DEHTP) with butyl alcohol
Data Source
AI summary
An ester composition including terephthalate compounds substituted with a non-hybrid and non-branched alkyl group, a hybrid and branched alkyl group, and a non-hybrid and branched alkyl group, respectively by 0.5 wt % to 9.5 wt %, by 14.5 wt % to 43.8 wt %, and 46.7 wt % to 85 wt % based on the total weight of the ester composition, a method of preparing the same, and a resin composition including the same are provided. The ester composition has a short absorption time with respect to the resin and short fusion time and improves the processability of the resin composition. In addition, good physical properties may be provided when manufacturing a sheet and a compound such as a cable, an interior of a car, a film, a sheet, a tube, a wallpaper, a toy, a flooring material, and the like.