Plasticizer Composition for PVC Resin Storage Stability
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Solution Overview
Problem
Existing plasticizer compositions derived from anhydrosugar alcohol ester compounds lack improved plasticity and storage stability, particularly when used in PVC resin applications.
Innovation Solution
A method involving the esterification reaction of an alcohol mixture comprising sugar alcohol and anhydrosugar alcohol with carboxylic acid, followed by neutralization, to produce a plasticizer composition comprising anhydrosugar alcohol monoester, diester, and sugar alcohol ester, with specific weight ratios to enhance plasticity and storage stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If anhydrosugar alcohol ester compound is used as plasticizer, then eco-friendliness is improved, but plasticity is insufficient
Solution Approach 1:
The patent uses a composite plasticizer system comprising multiple components: anhydrosugar alcohol ester (30-70 wt%), sugar alcohol ester (10-50 wt%), and a conventional plasticizer (10-40 wt%). This composite approach combines the eco-friendly benefits of sugar-based esters with the proven plasticizing performance of conventional additives, achieving both improved plasticity and environmental compatibility.
Solution Approach 2:
The patent optimizes the molecular weight distribution and chemical composition parameters of the anhydrosugar alcohol ester. Specifically, it controls the degree of esterification and selects appropriate fatty acid chain lengths to enhance the plasticizing efficiency while maintaining the eco-friendly characteristics of the base material.
2Strength
If plasticizer composition is improved for better plasticity, then storage stability deteriorates with generation of white colored substances
Solution Approach 1:
The patent controls the water content and pH parameters of the plasticizer composition to prevent degradation. By maintaining water content below 0.5 wt% through proper manufacturing processes and selecting stable fatty acid esters with controlled hydrolysis resistance, the composition remains stable during storage while retaining improved plasticity.
Solution Approach 2:
The patent introduces sugar alcohol ester as an intermediary component that mediates between the anhydrosugar alcohol ester and the final plasticizer composition. This intermediary substance acts as a stabilizer that prevents the formation of white colored degradation products while maintaining the plasticizing effects.
3Strength
If sugar alcohol content in alcohol mixture is increased, then plasticity improves, but storage stability worsens
Solution Approach 1:
The patent optimizes the ratio of sugar alcohol to anhydrosugar alcohol in the initial alcohol mixture. By controlling this ratio and the subsequent esterification degree, it achieves the right balance where sufficient sugar alcohol content provides improved plasticity while the controlled conversion to esters maintains storage stability.
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 resulting plasticizer composition exhibits improved plasticity and storage stability, suitable for thermoplastic elastomer and PVC resin applications, preventing the generation of white colored substances during storage.
Implementation Method 1
synthesizing sugar alcohol ester and anhydrosugar alcohol ester by esterification reaction of an alcohol mixture comprising sugar alcohol and anhydrosugar alcohol with carboxylic acid
Implementation Method 2
neutralizing the resulting mixture obtained in said step (1) comprising sugar alcohol ester and anhydrosugar alcohol ester with basic material
Data Source
AI summary
The present invention relates to a plasticizer composition and a preparation method therefor and, more specifically, to a plasticizer composition, which contains an anhydrosugar alcohol monoester, an anhydrosugar alcohol diester, and a sugar alcohol ester at a specific content ratio and has improved plasticity and excellent storage stability, and to a preparation method therefor.