Binder Composition for Stable Multi-Color Paint Distribution
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Solution Overview
Problem
Conventional paint formulations struggle to ensure stable distribution and protection of colorants during application methods like brushing, rolling, and spraying, leading to inconsistent paint film appearances, especially in multi-color paints.
Innovation Solution
A two-package binder composition is developed, comprising a first binder with polymer particles, anionic polyelectrolyte, and colorants, and a second binder with clay and dispersant, which are mixed to create a paint formulation with a continuous phase, ensuring effective protection and distribution of colorants in the paint film.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional single-color paints with one colorant are used, then the paint formulation is simple, but the paint film appearance cannot meet special customer requirements for customized appearances
Solution Approach 1:
The paint system is segmented into multiple independent binder packages (first binder with colorants, second binder without colorants) that can be separately formulated and then combined. This allows customization of paint appearance by selecting different colorant combinations while maintaining formulation stability for each package, resolving the contradiction between appearance versatility and formulation complexity.
Solution Approach 2:
The invention uses composite binder compositions combining organic polymer particles with inorganic clay particles in specific ratios. This composite structure provides both the colorant protection needed for customized appearances and the rheological stability required for application, enabling appearance customization without compromising formulation simplicity.
2Adaptability or versatility
If multi-color paints with at least two colorants are used, then special customer requirements for customized appearances are met, but the colorants cannot be stably distributed and protected during application
Solution Approach 1:
Multiple colorants are segregated into separate first binder packages rather than being mixed in a single formulation. Each colorant-containing binder is independently stabilized with polymer and clay particles, ensuring stable distribution. The packages are then combined in controlled proportions to achieve the desired multi-color appearance while maintaining colorant protection throughout application.
Solution Approach 2:
The anionic polyelectrolyte acts as an intermediary between the colorants and the polymer/clay matrix. It enhances the interaction between colorant particles and the binder composition, improving colorant protection and stable distribution during brushing, rolling, or spraying operations.
3Reliability
If colorants are well distributed in conventional paints, then the paint formulation is simple, but the colorants are not adequately protected during brushing, rolling, and spraying operations
Solution Approach 1:
The binder composition uses a composite system of organic polymer particles (30-90 wt%) and inorganic clay particles (10-70 wt%) in a water-based matrix. This composite structure creates a protective network that encapsulates and stabilizes colorant particles during application, providing adequate colorant protection while maintaining manageable formulation complexity through defined compositional ranges.
Solution Approach 2:
The invention optimizes specific parameters including polymer particle size (0.1-10 micrometers), clay particle size (0.1-10 micrometers), and their weight ratio (30:70 to 70:30) to achieve effective colorant protection. The anionic polyelectrolyte concentration is controlled at 0.01-5 wt% to enhance protection without excessive complexity.
4Reliability
If a two-package binder composition with clay and dispersant is used, then colorants are protected and stable distribution is achieved, but the paint formulation becomes more complex
Solution Approach 1:
The binder system is divided into two separate packages: Package 1 containing polymer particles, anionic polyelectrolyte, and colorants; Package 2 containing clay particles and dispersant. This segmentation allows each package to be independently optimized for its specific function (colorant protection vs. rheological control) while simplifying the overall formulation process through modular mixing in defined proportions.
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 binder composition effectively protects colorants within globules during application and heat aging, maintaining stability and preventing gelation or syneresis, resulting in consistent and desired paint film appearances.
Implementation Method 1
a first binder comprising by dry weight based on total dry weight of the first binder, from 2% to 99% polymer particles, from 0.4% to 40% an anionic polyelectrolyte, and from 0.2% to 50% a colorant
Implementation Method 2
a second binder comprising by dry weight based on total dry weight of the binder composition, from 0.5% to 70% a clay and from 0.03% to 10% a dispersant
Implementation Method 3
a paint formulation comprising the binder composition and a continuous phase comprising from 30% to 99%, by dry weight based on total dry weight of the continuous phase, polymer particles
Data Source
AI summary
The present invention further provides a binder composition comprising a first binder and a second binder. The first binder comprises, by dry weight based on total dry weight of the binder composition, from 1% to 98% polymer particles, from 0.3% to 20% an anionic polyelectrolyte, and from 0.1% to 20% a colorant; and the second binder comprises, by dry weight based on total dry weight of the binder composition, from 0.5% to 70% a clay, and from 0.03% to 10% a dispersant. It also provides a paint formulation comprising the binder composition.