Cyclohexane Diester Plasticizer Composition for Vinyl Chloride Resins

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Solution Overview

Problem

Existing plasticizer compositions for vinyl chloride-based resins lack superior physical properties such as plasticization efficiency, volatile loss, light resistance, and thermal stability, and are not environmentally friendly, posing environmental concerns and quality issues.

Innovation Solution

A plasticizer composition comprising a cyclohexane-1,2-diester-based substance with C4 to C12 alkyl groups and an epoxidized alkyl ester composition with C8 to C20 alkyl groups, along with a citrate-based substance, which enhances processing properties and stability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If phthalate-based plasticizers are used to achieve good plasticization efficiency, then plasticization efficiency is improved, but environmental friendliness deteriorates

Engineering Contradiction:
Improveplasticization efficiencyVSAvoidenvironmental friendliness
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical structure parameters of plasticizers by using cyclohexane-1,2-diester-based substances with specific alkyl group configurations (C4 to C12) instead of traditional phthalate structures. This structural parameter change maintains plasticization efficiency while eliminating the harmful environmental effects of phthalates.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite plasticizer system by combining cyclohexane-1,2-diester-based substances with epoxidized alkyl esters in specific ratios (70:30 to 30:70). This composite approach synergistically maintains excellent plasticization efficiency while achieving environmental friendliness and enhanced stability.

Inventive Principle:
Principle #40Composite materials

2Object-affected harmful factors

If existing non-phthalate plasticizers are used to improve environmental friendliness, then environmental friendliness is improved, but physical properties such as volatile loss and thermal stability deteriorate

Engineering Contradiction:
Improveenvironmental friendlinessVSAvoidphysical properties
Core Design Contradiction:
Object-affected harmful factorsVSReliability

Solution Approach 1:

The patent optimizes physical properties by precisely controlling the carbon chain length parameters of alkyl groups (C4 to C12 for cyclohexane diester, C8 to C20 for epoxidized alkyl ester) and their ratios in the composition, achieving low volatile loss and high thermal stability while maintaining environmental friendliness.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent develops a composite plasticizer system combining cyclohexane-1,2-diester-based substances and epoxidized alkyl esters in optimized ratios (70:30 to 30:70), where the synergistic interaction between components delivers superior volatile loss resistance and thermal stability compared to individual components.

Inventive Principle:
Principle #40Composite materials

3Adaptability or versatility

If general purpose phthalate products are used to achieve market compliance, then market demand is satisfied, but quality improvement is required

Engineering Contradiction:
Improvemarket complianceVSAvoidquality
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The patent enhances quality by optimizing molecular structure parameters including alkyl group carbon chain lengths (C4 to C12 and C8 to C20) and their specific configurations, achieving superior plasticization efficiency, light resistance, and thermal stability that exceed conventional phthalate product performance levels.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent creates a high-quality composite plasticizer system combining cyclohexane-1,2-diester-based substances and epoxidized alkyl esters in optimized ratios (70:30 to 30:70), delivering comprehensive performance improvements in plasticization efficiency, stability, and resistance properties that surpass existing market products.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS11753402B2Plasticizer composition and resin composition including the same
Publication Date: 2023.09.12 LG CHEM LTD
  • US11753402B2 patent drawing
  • US11753402B2 patent drawing
  • US11753402B2 patent drawing

AI summary

Provided is a plasticizer composition, including: a cyclohexane-1,2-diester-based substance in which two alkyl groups are bonded to the ester groups, and the alkyl groups each independently are a C4 to C12 alkyl group; and an epoxidized alkyl ester composition comprising one or more compounds of the following Chemical Formula 1:wherein in Chemical Formula 1:R1 is a C8 to C20 alkyl group comprising one or more epoxy groups; andR2 is a C4 to C10 alkyl group.