Point-of-Sale Paint Gloss Tuning With Polymeric Microspheres
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Solution Overview
Problem
Existing point-of-sale paint preparation methods require large inventories due to limited flexibility in adjusting gloss, color, and formulation components, leading to inefficiencies and inventory challenges.
Innovation Solution
A method involving the concurrent or sequential dispensing of aqueous solutions of rheology modifiers, opacifying pigments, polymer particles, and organic polymeric microspheres into separate containers, with controlled pigment volume concentrations (PVC) to tune gloss and viscosity, reducing reliance on inorganic extenders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple varieties of completely prepared paints are maintained in inventory to meet public demand for different glosses and performance characteristics, then customer selection and service quality are improved, but inventory complexity and storage requirements increase
Solution Approach 1:
The paint formulation is segmented into separate functional components (binder, opacifying pigment, extender pigment, and polymeric organic microsphere) that are stored individually and combined at the point of sale. This allows the same base components to be used across multiple paint varieties, reducing inventory requirements while maintaining the ability to create different gloss levels and performance characteristics through varying component ratios.
Solution Approach 2:
The system transitions from static pre-prepared paint inventories to a dynamic formulation approach where paint properties (particularly gloss) are adjusted in real-time at the point of sale by varying the pigment volume concentration of organic microspheres. This enables customization without requiring pre-stocking of every possible variation.
2Quantity of substance
If point-of-sale paint preparation is implemented to reduce inventory, then inventory complexity is reduced, but formulation precision and quality control become more challenging
Solution Approach 1:
The system uses controlled changes in the pigment volume concentration (PVC) of polymeric organic microspheres as a key parameter to adjust paint gloss and viscosity at the point of sale. By establishing specific PVC ranges (5-80% for high gloss, 0-50% for low gloss) and using automated dispensing equipment, the method achieves consistent formulation precision without requiring extensive formulator expertise at each location.
3Adaptability or versatility
If traditional inorganic extenders are used to adjust paint properties, then formulation flexibility is achieved, but viscosity control becomes difficult and requires excessive rheology modifiers
Solution Approach 1:
The invention replaces traditional inorganic extenders with polymeric organic microspheres that provide superior viscosity control. These microspheres maintain stable suspensions without requiring excessive rheology modifiers, as their polymeric nature and controlled particle size (0.7-30 μm) inherently provide better flow characteristics and reduce settling, thereby simplifying the formulation while maintaining flexibility.
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
Enables the preparation of a wide variety of paints at the point-of-sale with reduced inventory needs, achieving consistent density and viscosity without overloading on rheology modifiers, thus simplifying and cost-effectively addressing inventory and formulation complexities.
Implementation Method 1
an aqueous dispersion of organic polymeric microspheres having a median weight average (D50) particle size in the range of from 0.7 μm to 30 μm
Implementation Method 2
tuning gloss in paint formulations
Implementation Method 3
an aqueous solution of a rheology modifier
Implementation Method 4
adjusting the gloss and the color to more easily give paint a uniform color appearance at different glosses
Data Source
AI summary
The present invention relates to a method for preparing a multiplicity of containers of paints or pre-paints from separate vessels containing an aqueous solution of a rheology modifier, optionally an aqueous dispersion of an opacifying pigment, an aqueous dispersion of polymer particles, and an aqueous dispersion of organic polymeric microspheres. The process of the present invention provides a simple and cost-effective way of preparing a wide variety of a large quantity of contained and finished paints at point-of-sale.