Paint Formulation Using Hydrophobically Modified Alkali-Swellable Emulsion
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Solution Overview
Problem
Existing paint formulations with clay provide limited viscosity stability and customization options, and are primarily suitable only for spraying, lacking stability and versatility for single-color and multi-color applications using rolling and brushing methods.
Innovation Solution
A paint formulation comprising a binder dispersion and a hydrophobically modified alkali-swellable emulsion, with a wet weight ratio of 1:3 to 1:10, incorporating polymer particles, polysaccharides, and α,β-ethylenically unsaturated monomers, which allows for improved viscosity stability and customizable appearance, enabling application methods beyond spraying.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If clay is used to protect colorant in paint formulations, then colorant protection is improved, but cost increases and viscosity stability deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters by replacing clay with a hydrophobically modified alkali-swellable emulsion containing specific monomers (α,β-ethylenically unsaturated carboxylic acid monomer and α,β-ethylenically unsaturated nonionic monomer) in controlled amounts, achieving both colorant protection and viscosity stability without clay
Solution Approach 2:
The patent creates a composite binder system combining binder dispersion with hydrophobically modified alkali-swellable emulsion, where the emulsion provides both colorant protection and viscosity control functions that were previously requiring clay additives
2Reliability
If clay-based paint formulations are used, then colorant protection is achieved, but application versatility deteriorates (only suitable for spraying)
Solution Approach 1:
The patent modifies the rheological parameters of the paint formulation by using hydrophobically modified alkali-swellable emulsion, which provides appropriate viscosity characteristics for multiple application methods including spraying, rolling, and brushing, unlike clay-based formulations
3Reliability
If clay is used in paint formulations, then colorant protection is improved, but viscosity stability deteriorates
Solution Approach 1:
The patent changes the formulation parameters by replacing clay with precisely controlled amounts of hydrophobically modified alkali-swellable emulsion containing specific monomer compositions, achieving both colorant protection and improved viscosity stability
4Reliability
If clay-based formulations are used, then colorant protection is achieved, but paint appearance customization deteriorates (limited choices)
Solution Approach 1:
The patent enables appearance customization by adjusting the ratio of binder dispersion to hydrophobically modified alkali-swellable emulsion (from 1:3 to 1:10 wet weight ratio) and modifying the monomer composition within the emulsion, providing diverse paint appearance options while maintaining colorant protection
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 formulation achieves enhanced colorant protection and viscosity stability, allowing for effective application by spraying, rolling, and brushing, while reducing clay usage and expanding appearance options for single-color and multi-color paints.
Implementation Method 1
The colorants are desirably well distributed and stably protected in the paints before applications
Implementation Method 2
a paint formulation comprising a binder dispersion and a hydrophobically modified alkali-swellable emulsion
Implementation Method 3
The present invention further provides a process for preparing the paint formulation comprising mixing the binder dispersion with the hydrophobically modified alkali-swellable emulsion under stirring
Data Source
AI summary
The present invention provides a paint formulation comprising a binder dispersion and a hydrophobically modified alkali-swellable emulsion. The wet weight ratio of the binder dispersion to the hydrophobically modified alkali-swellable emulsion is from 1:3 to 1:10. The binder dispersion comprises by dry weight based on total dry weight of the binder dispersion, from 0.1% to 80% of polymer particles, and from 0.1% to 5% of a polysaccharide; and the hydrophobically modified alkali-swellable emulsion comprises by dry weight based on total dry weight of the hydrophobically modified alkali-swellable emulsion, from 30% to 50% of an α,β-ethylenically unsaturated carboxylic acid monomer, and from 30% to 60% of an α,β-ethylenically unsaturated nonionic monomer. The present invention further provides a process for preparing the paint formulation comprising mixing the binder dispersion with the hydrophobically modified alkali-swellable emulsion under stirring.