Ester Composition for Resin Processability
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Solution Overview
Problem
Existing eco-friendly plasticizers face challenges in processability and physical properties due to limitations in absorption rate and fusion time, particularly in sheet formulation and compound formulation of wires, automobile interior materials, films, sheets, tubes, wallpaper, toys, and floor materials.
Innovation Solution
A method for preparing an ester composition comprising hybrid branched type, non-hybrid unbranched type, and non-hybrid branched type alkyl-substituted terephthalate compounds through esterification reaction, with the hybrid branched type alkyl-substituted terephthalate compound present in specific amounts, using terephthalic acid, unbranched, and branched alcohols with acid catalysts at controlled temperatures and times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional eco-friendly plasticizers are used, then environmental friendliness is improved, but processability and physical properties deteriorate due to low absorption rate and long fusion time
Solution Approach 1:
The patent applies parameter changes by precisely controlling the content of hybrid branched type alkyl-substituted terephthalate compound (1-70 wt%, preferably 10-50 wt%) in the ester composition. This specific compositional parameter optimization resolves the contradiction by achieving both environmental friendliness and improved processability with high absorption rate and short fusion time
Solution Approach 2:
The patent creates a composite plasticizer composition containing three types of ester compounds (hybrid branched type, non-hybrid unbranched type, and non-hybrid branched type alkyl-substituted terephthalates). This composite approach combines the environmental benefits of terephthalate-based plasticizers with improved processability through the specific hybrid branched component, resolving the contradiction between eco-friendliness and productivity
2Quantity of substance
If esterification reaction conditions are optimized for high conversion, then yield is improved, but reaction time and energy consumption increase
Solution Approach 1:
The patent optimizes multiple reaction parameters simultaneously: temperature (130-250°C), time (1-10 hours), and acid catalyst amount (0.1-15 parts by weight per 100 parts terephthalic acid). This multi-parameter optimization achieves high yield within reasonable time frames, resolving the contradiction between quantity and time loss
Solution Approach 2:
The patent uses acid catalysts (paratoluenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, propanesulfonic acid, or sulfuric acid) as intermediaries to accelerate the esterification reaction. These catalysts enable high conversion yields without requiring excessively long reaction times or extreme conditions, thus resolving the time-yield contradiction
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 method enhances processability by achieving high absorption rates and short fusion times, resulting in superior physical properties and improved workability in resin compositions, such as those used in cables, automobile interior materials, films, sheets, tubes, wallpaper, and floor materials.
Implementation Method 1
the esterification reaction is carried out by reacting terephthalic acid, an unbranched alcohol and a branched alcohol using an acid catalyst at 130 to 250°C for 1 to 10 hours
Implementation Method 2
using an acid catalyst in the range of 0.1 to 15 parts by weight, with respect to 100 parts by weight of the terephthalic acid, and wherein the acid catalyst comprises at least one selected from the group consisting of paratoluenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, propanesulfonic acid and sulfuric acid
Data Source
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AI summary
Disclosed are a method for preparing an ester composition and a resin composition comprising the ester composition. It is possible to suitably prepare a plasticizer composition which improves processability due to high absorption rate and short fusion time to resins and thus provides superior physical properties when processed with resins.