Starch-Cellulose Thickener Blend for High-Viscosity Dispersion Paints
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Solution Overview
Problem
Starch derivatives have limited significance and poor market acceptance as thickeners in emulsion paints due to insufficient thickening performance compared to celluloses, leading to inferior paint quality and properties such as washing and scrubbing resistance.
Innovation Solution
Combining starch or starch derivatives with highly viscous celluloses, where the cellulose has a viscosity greater than 50,000 mPa.s, to create a thickener system that achieves enhanced viscosity and improved paint properties without compromising washing and scrubbing resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If starch derivatives are used as thickeners in emulsion paints, then cost and natural renewability are improved, but thickening performance and paint quality deteriorate
Solution Approach 1:
The patent combines starch derivatives with cellulose derivatives to create a hybrid thickening system. This merging allows the paint formulation to benefit from both the cost-effectiveness and natural renewability of starch and the superior thickening performance of cellulose, thereby resolving the contradiction between manufacturing cost and thickening performance.
Solution Approach 2:
The invention uses composite thickening materials comprising both starch derivatives and cellulose derivatives. This composite approach enables the system to achieve the desired thickening performance comparable to pure cellulose systems while incorporating the economic and environmental advantages of starch-based materials.
2Adaptability or versatility
If starch derivatives are used as thickeners, then natural renewability and environmental friendliness are improved, but washing and scrubbing resistance deteriorate
Solution Approach 1:
By merging starch derivatives with cellulose derivatives in a combined thickening system, the patent maintains the natural renewability advantage of starch while compensating for its inferior washing and scrubbing resistance through the presence of cellulose, which provides enhanced durability and resistance properties.
Solution Approach 2:
The composite thickening material combines the environmental benefits of starch with the performance advantages of cellulose, creating a system that achieves both natural renewability and improved washing and scrubbing resistance simultaneously.
3Reliability
If pure cellulose is used as thickener, then thickening performance and paint quality are improved, but cost and environmental impact worsen
Solution Approach 1:
The patent segments the thickening function between two materials: starch derivatives provide baseline thickening and economic benefits, while cellulose derivatives provide enhanced performance. This segmentation allows the system to achieve high thickening performance without relying entirely on expensive cellulose, thereby reducing overall cost.
Solution Approach 2:
The composite system uses a combination of starch and cellulose derivatives to achieve cost-effectiveness. By incorporating the more economical starch component, the overall formulation cost is reduced while maintaining the high thickening performance required for quality paint products through the cellulose component.
4Reliability
If pure cellulose is used as thickener, then paint quality and processing behavior are improved, but environmental friendliness worsens
Solution Approach 1:
The patent segments the environmental and performance functions between two materials: starch derivatives provide the environmentally friendly, renewable base, while cellulose derivatives ensure high paint quality and processing behavior. This segmentation allows the system to maintain superior paint quality while improving environmental friendliness through the incorporation of starch.
Solution Approach 2:
The composite thickening material combines environmentally benign starch derivatives with cellulose derivatives, creating a system that is both eco-friendly and high-performance. This composite approach enables the paint to achieve excellent quality and processing characteristics while reducing environmental impact compared to pure cellulose systems.
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 combination of starch and high-viscosity cellulose thickeners results in paint systems with improved washing and abrasion resistance, processing behavior, and color stability, making starch derivatives competitive with cellulose-based systems.
Implementation Method 1
a cellulose having a viscosity > 50,000 mPa.s, preferably > 60,000 mPa.s, in particular > 75,000 mPa.s, measured using a Brookfield rotational viscometer as a 2% swollen aqueous solution
Implementation Method 2
dispersion paint thickener combination, comprising starch(es) or starch derivatives together with at least one highly viscous cellulose
Data Source
AI summary
The invention relates to the combined use of starch(es) and starch derivatives together with at least one high-viscosity cellulose as thickener in dispersion binder-based colour systems, the cellulose having a viscosity of > 50,000 mPa.s, measured by the Brookfield Rotation Viscometer as a 2 % swollen aqueous solution at 5 rpm and 25°C. The invention further relates to a method for production of dispersion binder-based colour systems and a dispersion colour thickener combination and a dispersion colour containing the dispersion colour thickener combination.