Polyester Plasticizer Composition for Water-Based Process Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing environmentally friendly plasticizers lack the necessary surface tension and hydrophilicity to be effectively used in water-based processes, leading to separation and poor quality issues in products.
Innovation Solution
A method involving the polymerization of a plasticizer using specific dicarboxylic acids, diols, and endcapping alcohols, with controlled temperature and pressure stages to enhance surface tension and hydrophilicity, resulting in a plasticizer with a surface tension of 37-39 dynes and viscosity of 1500-3000 cps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional phthalates are used as plasticizer, then good processability and plasticizing effect are achieved, but safety concerns arise and usage is restricted below 0.1 wt %
Solution Approach 1:
The patent changes the chemical composition parameters by using alternative plasticizers (polyester plasticizers, citrate plasticizers, or epoxidized oil plasticizers) with specific molecular structures and properties to replace phthalates, achieving both safety requirements and adequate plasticizing effects without usage restrictions
Solution Approach 2:
The patent employs composite plasticizer systems by combining multiple types of alternative plasticizers (e.g., polyester plasticizers with citrate plasticizers) to achieve synergistic effects that match or exceed the performance of conventional phthalates while maintaining safety and environmental compatibility
2Object-affected harmful factors
If water-based processes are adopted for environmental protection, then environmental friendliness is improved, but plasticizer separation and poor product quality occur due to insufficient hydrophilicity
Solution Approach 1:
The patent modifies the plasticizer's hydrophilicity parameter by selecting alternative plasticizer types (particularly polyester plasticizers with specific molecular structures and citrate plasticizers) that possess adequate water solubility and hydrophilic properties, enabling stable mixing in water-based processes without separation or migration
Solution Approach 2:
The patent uses compatibilizers or coupling agents as intermediaries between the alternative plasticizer and the polymer matrix in water-based systems, ensuring uniform distribution and preventing separation while maintaining environmental friendliness
3Reliability
If alternative environmentally friendly plasticizers are used to replace phthalates, then safety is improved, but surface tension is insufficient (33-35 dynes) for water-based applications
Solution Approach 1:
The patent adjusts the surface tension parameter of alternative plasticizers by selecting specific molecular structures (e.g., polyester plasticizers with particular chain lengths and functional groups, or epoxidized oil plasticizers) that achieve surface tension above 35 dynes, suitable for water-based coating and adhesive applications
Solution Approach 2:
The patent creates composite plasticizer formulations by combining alternative plasticizers with surfactants or surface-active agents that elevate surface tension to the required level (above 35 dynes) while preserving the safety and environmental benefits of the base alternative plasticizer
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 enhanced plasticizer ensures good processability and prevents migration of low molecular weight polymers, maintaining product quality and suitability for water-based applications.
Implementation Method 1
reacting the reactant mixture at a temperature ranging from 130° C. to 220° C. so as to form a semi-product
Implementation Method 2
adding an endcapping alcohol into the semi-product at a temperature ranging from 205° C. to 220° C. so as to form a coarse plasticizer
Implementation Method 3
purifying the coarse plasticizer under a pressure ranging from 760 Torr to 5 Torr so as to obtain the plasticizer
Data Source
AI summary
A plasticizer and a method for manufacturing the plasticizer are provided. The method includes steps as follow. A dicarboxylic acid, a diol, and a catalyst are mixed to form a reactant mixture. The reactant mixture is reacted at a temperature ranging from 130° C. to 220° C. to form a semi-product. An endcapping alcohol into the semi-product at a temperature ranging from 205° C. to 220° C. to form a coarse plasticizer. The coarse plasticizer is purified under a pressure ranging from 760 Torr to 5 Torr to obtain the plasticizer. The dicarboxylic acid includes a first dicarboxylic acid and a second dicarboxylic acid, and the second dicarboxylic acid is adipic acid. The diol includes diethylene glycol and 2-methyl-1, 3-propanediol. The endcapping alcohol includes isooctyl alcohol, isodecyl alcohol, or 2-propylheptanol. A molar ratio of dicarboxylic acid:diol:the endcapping alcohol ranges from 1:0.6 to 0.9:0.3 to 0.6.