Freeze-Thaw Stabilizer Additive for Paint Formulations
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Solution Overview
Problem
Current freeze-thaw stabilizers like ethylene glycol and propylene glycol in paint formulations are volatile organic compounds (VOCs), and alternative non-VOC, non-alkylphenol ethoxylate (non-APE) based stabilizers such as tri-styryl phenol (TSP) ethoxylates have performance limitations, especially in high pigment volume concentration paints, and negatively impact scrub resistance.
Innovation Solution
A mixture of specific anti-freezing compounds like glycerin alkoxylate and emulsifiers like C12-C14 primary or secondary ethoxylates, used in a predetermined ratio, provides a synergistic effect to improve freeze-thaw stability and scrub resistance in paint formulations, while being non-VOC and non-APE based.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ethylene glycol or propylene glycol are used as freeze-thaw stabilizers, then freeze-thaw stability is improved, but volatile organic compound (VOC) content increases
Solution Approach 1:
The patent changes the chemical composition parameters by replacing traditional glycol-based stabilizers with a blend of non-VOC compounds including polyethylene glycol, polypropylene glycol, and glycerin in specific proportions (each from 1-50 wt%), thereby eliminating harmful VOC emissions while preserving freeze-thaw stabilization functionality
Solution Approach 2:
The invention uses a composite additive system combining multiple non-VOC compounds (polyethylene glycol, polypropylene glycol, glycerin, and optionally cellulose ether) in predetermined ratios to achieve synergistic freeze-thaw protection, replacing single-component traditional stabilizers and eliminating VOC content while maintaining or improving performance
2Object-generated harmful factors
If tri-styryl phenol (TSP) ethoxylates are used as non-VOC alternative stabilizers, then VOC content is reduced, but scrub resistance deteriorates
Solution Approach 1:
The patent changes the chemical composition by eliminating TSP ethoxylates and using a different class of compounds (polyethylene glycol, polypropylene glycol, glycerin) with appropriate molecular weights and hydrophilic-lipophilic balance, thereby improving scrub resistance while maintaining non-VOC status
Solution Approach 2:
The invention uses readily available, inexpensive raw materials (polyethylene glycol, polypropylene glycol, glycerin) that can be easily sourced and processed, replacing more expensive specialized surfactants like TSP ethoxylates, while achieving equal or superior performance in both freeze-thaw stability and scrub resistance
3Object-generated harmful factors
If TSP ethoxylates are used as freeze-thaw stabilizers, then VOC content is reduced, but performance in high pigment volume concentration paints deteriorates
Solution Approach 1:
The patent adjusts key parameters including molecular weight distribution (using PEG and PPG with Mw from 200-20,000), hydrophilic-lipophilic balance (HLB values from 8-18), and compositional ratios to optimize performance in high PVC formulations, achieving effective freeze-thaw protection where TSP ethoxylates fail
Solution Approach 2:
The additive blend serves multiple functions simultaneously: freeze-thaw stabilization, viscosity control, dispersion maintenance in high PVC conditions, and scrub resistance enhancement, making it a universal solution that outperforms TSP ethoxylates which are limited to specific applications
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 solution achieves enhanced freeze-thaw stability and scrub resistance in paint formulations, maintaining minimal viscosity change and compatibility with various resin systems, and is easily producible without complex synthesis, offering an eco-friendly alternative to traditional stabilizers.
Implementation Method 1
A mixture of specific anti-freezing compounds like glycerin alkoxylate and emulsifiers like C12-C14 primary or secondary ethoxylates, used in a predetermined ratio, provides a synergistic effect to improve freeze-thaw stability and scrub resistance in paint formulations
Implementation Method 2
at least one emulsifier having a hydrophilic-lipophilic balance (HLB) value of from 8 to 18
Data Source
AI summary
A freeze-thaw stabilizer additive composition including (a) at least one anti-freezing agent; and (b) at least one emulsifier; and (c) any other desired optional compound; a process for making the above freeze-thaw stabilizer additive composition, a paint formulation made containing the above freeze-thaw stabilizer additive composition; and a process for making the above paint formulation.