Vinyl Chloride Resin Plasticizer Composition for Weather Resistance
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Solution Overview
Problem
Vinyl chloride resin compositions face challenges with phthalate-based plasticizers due to their harmful effects, poor weather resistance, and rapid viscosity increase in cold temperatures, necessitating an eco-friendly alternative with improved migration resistance and cold resistance.
Innovation Solution
A plasticizer composition comprising di(2-ethylhexyl)cyclohexane-1,4-dicarboxylate, dioctyl adipate, and a compound like tributyl citrate, which synergistically enhances plasticization efficiency, migration resistance, weather resistance, and cold resistance without using phthalate-based compounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If phthalate-based plasticizer is used to improve plasticization efficiency, then plasticization efficiency is improved, but harmful effects on human body occur
Solution Approach 1:
The patent removes harmful phthalate-based plasticizers from the composition and replaces them with eco-friendly alternatives (DOTP, DOA, DEHPA) that provide comparable plasticization efficiency without the harmful effects. This extraction of the harmful component while maintaining the functional benefit directly resolves the contradiction.
2Object-generated harmful factors
If DOTP plasticizer is used as eco-friendly alternative, then harmful effects are reduced, but weather resistance and cold resistance deteriorate
Solution Approach 1:
The patent creates a composite plasticizer system combining multiple eco-friendly plasticizers (DOTP, DOA, DEHPA) in specific ratios. This composite approach synergistically improves weather resistance and cold resistance while maintaining eco-friendliness, resolving the contradiction between reduced harmful effects and improved reliability.
3Ease of operation
If large amount of plasticizer is added to vinyl chloride resin to secure flexibility, then flexibility is improved, but migration resistance deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the plasticizer system by selecting specific plasticizers (DOTP, DOA, DEHPA) with appropriate molecular structures and weights. These parameter changes enable achieving the required flexibility with lower plasticizer concentrations, thereby improving migration resistance while maintaining ease of operation.
Data Source
AI summary
The present disclosure relates to a plasticizer composition having excellent plasticization efficiency and migration resistance with significantly improved weather resistance and cold resistance, and a vinyl chloride resin composition including the same.