Anticorrosive Agent Using Platelet Fillers for Damp Surface Application
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Solution Overview
Problem
Existing rust inhibitors face challenges with storage stability, thixotropy, and the use of restricted solvents like White Spirit, which affects their effectiveness and adherence to environmental regulations, particularly in forming stable protective layers on damp surfaces.
Innovation Solution
A rust protection agent using platelet-shaped barium sulfate or silicon dioxide as fillers, combined with butyl-styrene copolymers and styrene acrylate binders, and an aromatic-free aliphatic solvent, which enhances storage stability and allows application on damp surfaces without polysaccharides or heavy metals, forming a durable and impermeable protective layer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If White Spirit is used as a solvent to maintain binder solubility and effectiveness, then the rust protection composition remains effective, but the composition contains carcinogenic aromatic compounds that are increasingly restricted by environmental regulations
Solution Approach 1:
The patent replaces the aromatic solvent system (White Spirit) with an aliphatic solvent system, specifically using solvents with higher boiling points and different chemical structures. This parameter change in the solvent type maintains the binder solubility and rust protection effectiveness while eliminating carcinogenic aromatic compounds, thus resolving the contradiction between reliability and harmful factors
Solution Approach 2:
The patent uses readily available aliphatic solvents that can be easily sourced and applied, replacing the more problematic aromatic solvents. This substitution maintains functional effectiveness while improving environmental compliance and safety
2Stability of the object's composition
If polysaccharides are added to improve thixotropy and storage stability, then the rust inhibitor becomes more stable during storage, but the composition becomes less environmentally friendly and may clump together over time
Solution Approach 1:
The patent removes polysaccharides from the composition entirely, extracting this problematic component that provides thixotropy but harms environmental friendliness and causes clumping. The formulation achieves stability through alternative means without relying on polysaccharide additives
Solution Approach 2:
The patent uses a composite binder system combining multiple polymers (such as polyvinyl acetate copolymers and phenoplasts) that work together to provide both storage stability and thixotropy without requiring polysaccharides. This composite approach maintains composition stability while improving environmental compatibility
3Reliability
If conventional fillers are used in the rust inhibitor, then the protective layer formation is adequate, but the storage stability is insufficient and the protective layer lacks impermeability
Solution Approach 1:
The patent employs a composite filler system combining platelet-shaped barium sulfate and/or silicon dioxide with traditional fillers like silicates and pigments. This composite filler structure provides both adequate protective layer formation and enhanced storage stability, while the platelet shape specifically contributes to impermeability
Solution Approach 2:
The patent introduces platelet-shaped fillers with specific morphology (platelet structure) to create a layered, impermeable protective layer. This local structural quality improvement addresses both the protective layer formation and storage stability requirements by creating a more robust physical barrier
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 solution significantly improves storage stability, allows application on damp surfaces, reduces dust and sparking risks, and forms a long-lasting, impermeable protective layer that prevents further rusting, meeting environmental standards and reducing renovation costs.
Implementation Method 1
The solution significantly improves storage stability, allows application on damp surfaces, reduces dust and sparking risks, and forms a long-lasting, impermeable protective layer that prevents further rusting
Implementation Method 2
various types of rust protection and rust converting agents have become known. One group of these rust inhibitors contains plastic resins or binders and chelating agents such as tannins
Implementation Method 3
A rust protection agent using platelet-shaped barium sulfate or silicon dioxide as fillers, combined with butyl-styrene copolymers and styrene acrylate binders, and an aromatic-free aliphatic solvent, which enhances storage stability and allows application on damp surfaces
Data Source
AI summary
The invention relates to an anticorrosive agent for use in emulsion and/or dispersion form, containing: preferably 6 to 20 % by weight of a first binding agent, which can be dissolved or suspended in an organic solvent and which is in the form of polymers or copolymers; a second dissolvable or suspendable binding agent in aqueous phase; 0.5 to 10 % by weight of drying oils and/or oil-modified resins; 0.5 to 5 % by weight of chelating agents such as gallic acids, tannins, aromatic oxycarboxylic acids, particularly dioxy- and trioxycarboxylic acids, and naphthenic acids, at least one emulsifier, at least 10 % by weight of water, at least 10 % by weight of at least one first, preferably aromatic compound-free organic solvent, and at least one preferably organic acid for setting an acid pH value. The anticorrosive agent also contains an inert, film-reinforcing platelike or flake-shaped filler in the form of SiO2 or BaSO4.