Building Coating Composition with Superplasticizers for High Yield
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Solution Overview
Problem
Current compositions for coating and leveling concrete surfaces, such as Sider Cim® and Sider Cim 421®, have limitations in increasing implementation yields, leading to higher production costs and reduced ease of application while maintaining visual appearance.
Innovation Solution
A composition comprising 0.2-10% superplasticizers based on carboxylic acids with polyether grafts, 0.5-5% thickening agents, 5-30% aqueous dispersion of copolymers, 30-70% mineral fillers, and 0-60% water, which requires a greater mineral binder addition to maintain rheological characteristics, allowing for increased surface coverage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional compositions (Sider Cim®, Sider Cim 421®) are used for coating and leveling concrete surfaces, then the product provides basic coverage and leveling functionality, but the implementation yield is limited and product consumption is high
Solution Approach 1:
The patent changes the chemical composition parameters by introducing carboxylic acid-based superplasticizers with polyether grafts (0.2-10% by weight) and specific thickening agents (0.5-5% by weight), which modify the rheological properties of the composition to achieve better flow and coverage characteristics, thereby increasing implementation yield
Solution Approach 2:
The patent creates a composite composition by combining multiple functional components: superplasticizers, thickening agents, aqueous dispersion of copolymers (5-30%), and mineral fillers (30-70%), where each component contributes specific properties that synergistically improve the overall performance and yield of the coating composition
2Productivity
If the composition formulation is modified to increase surface coverage, then the yield improves, but the rheological properties may deteriorate affecting application quality
Solution Approach 1:
The patent carefully balances the concentration parameters of superplasticizers (0.2-10%) and thickening agents (0.5-5%) to achieve optimal rheological properties that enable both high surface coverage and proper application characteristics, preventing the composition from becoming too thin or too viscous
Solution Approach 2:
The thickening agents act as intermediaries that modulate the flow properties of the composition, allowing the superplasticizers to enhance coverage while the thickening agents maintain adequate viscosity and stability for proper application and leveling
3Stability of the object's composition
If more mineral binder is added to maintain rheological characteristics, then the composition stability improves, but the cost per square meter increases
Solution Approach 1:
The patent optimizes the proportion of mineral fillers (30-70% by weight) to achieve the desired rheological characteristics and surface coverage performance while controlling the quantity of expensive binder materials, thereby reducing the overall cost per square meter of treatment
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 composition achieves 20-30% additional surface coverage compared to existing products, with improved applicability and mechanical resistance, while reducing costs per square meter treated.
Implementation Method 1
0.2 to 10% of at least one superplasticizer selected from carboxylic acid-based superplasticizers consisting of a main polycarboxylate chain to which polyether groups are grafted
Implementation Method 2
0.5 to 5% of at least one thickening agent of inorganic and/or organic origin
Implementation Method 3
5 to 30% of at least one aqueous dispersion of copolymers or synthetic latex resulting from the copolymerization of at least two monomers
Data Source
AI summary
The present invention relates to a composition for use in the building industry, advantageously a composition for coating or finishing flat surfaces, such as walls, said composition including (% expressed by weight relative to the total weight of the composition): 0.2-10% of at least one superplasticizer selected from the modified polycarboxylic ethers, 0.5-5% of at least one thickener of inorganic and/or organic origin, 5-30% of an aqueous polymer dispersion, and 30-70% of at least one mineral filler. Said composition can further include up to 60% of water, and can also include at least one compound selected from biocidal agents, anti-foaming agents, sodium hydroxide and potassium hydroxide.