Non-Phthalate Plasticizer Composition for Sealant Viscosity and Cold Resistance

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Solution Overview

Problem

There is a demand for environmentally-friendly plasticizer compositions that do not include phthalate-based plasticizers, yet exhibit properties equivalent to or more excellent than those of existing phthalate-based plasticizers, particularly in terms of viscosity control and low temperature resistance.

Innovation Solution

A plasticizer composition comprising a cyclohexane-1,4-dicarboxylate-based compound, a cyclohexane-1,2-dicarboxylate-based compound, and a benzoate-based compound, with the benzoate-based compound included in less than 60 parts by weight, is used to achieve the desired properties.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If phthalate-based plasticizers are used, then viscosity control and processability are improved, but environmental safety deteriorates due to endocrine disruption

Engineering Contradiction:

Improveviscosity controlVSAvoidenvironmental safety

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The patent changes the chemical composition parameters by replacing phthalate-based plasticizers with a specific combination of non-phthalate plasticizers (cyclohexane-1,4-dicarboxylate, cyclohexane-1,2-dicarboxylate, and benzoate-based compounds in controlled ratios), thereby eliminating endocrine disruption while maintaining viscosity control properties

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent uses a composite plasticizer system combining three different non-phthalate plasticizer types in specific weight ratios (5-50 parts cyclohexane-1,4-dicarboxylate, 5-50 parts cyclohexane-1,2-dicarboxylate, and 5-40 parts benzoate-based compound per 100 parts total plasticizer), achieving both environmental safety and processability

Inventive Principle:

Principle #40Composite materials

2Object-affected harmful factors

If non-phthalate plasticizers are used to improve environmental safety, then viscosity control and low temperature properties deteriorate

Engineering Contradiction:

Improveenvironmental safetyVSAvoidviscosity control

Core Design Contradiction:

Object-affected harmful factorsVSEase of operation

Solution Approach 1:

The patent merges three different non-phthalate plasticizer compounds into a synergistic combination, where each component contributes specific properties: cyclohexane-1,4-dicarboxylate for low temperature flexibility, cyclohexane-1,2-dicarboxylate for viscosity stability, and benzoate-based compound for processing characteristics, collectively achieving properties equivalent to or exceeding phthalate plasticizers

Inventive Principle:

Principle #5Merging (Combining)

3Object-affected harmful factors

If non-phthalate plasticizers are used to improve environmental safety, then low temperature resistance deteriorates

Engineering Contradiction:

Improveenvironmental safetyVSAvoidlow temperature resistance

Core Design Contradiction:

Object-affected harmful factorsVSTemperature

Solution Approach 1:

The patent optimizes the molecular structure parameters of the plasticizer components by selecting cyclohexane-based compounds with specific dicarboxylate configurations that maintain low glass transition temperatures, ensuring low temperature resistance while eliminating endocrine disruption

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent creates a composite plasticizer system where cyclohexane-1,4-dicarboxylate and cyclohexane-1,2-dicarboxylate components work synergistically to maintain low temperature flexibility, with the benzoate-based compound enhancing overall performance while keeping the formulation environmentally safe

Inventive Principle:

Principle #40Composite materials

Data Source

PatentUS12281215B2Plasticizer composition, and sealant/adhesive compositions including the same

Publication Date: 2025.04.22 HANWHA SOLUTIONS CORP

AI summary

This invention relates to a plasticizer composition that is environmentally-friendly, and yet exhibits excellent viscosity control, processability, low temperature properties, and migration resistance, and an adhesive composition including the same.