Cementitious Cleaning Composition with Organic Inhibitor
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Solution Overview
Problem
Existing compositions for removing cementitious materials from surfaces often cause corrosion, flash rusting, and environmental contamination, as they are not environmentally safe and can dissolve surface coatings, leading to increased maintenance needs and regulatory compliance issues.
Innovation Solution
A composition comprising HCl, urea, complex substituted keto-amine-hydrochloride, an alcohol, an ethoxylate, and a ketone, which includes an organic cationic inhibitor to prevent corrosion and rusting, is used to effectively remove cementitious materials while being environmentally safe and compliant with OSHA and EPA regulations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If acid washes or urea hydrochloride solutions are used to remove cementitious materials, then effective removal is achieved, but corrosion and flash rusting occur on metal surfaces
Solution Approach 1:
The patent introduces an organic cationic inhibitor as an intermediary substance that mediates between the cleaning composition and metal surfaces. This inhibitor forms a protective film on metal surfaces, preventing direct contact between corrosive components (HCl, urea) and the metal, thereby eliminating corrosion and flash rusting while maintaining cementitious material removal effectiveness
Solution Approach 2:
The patent changes the chemical parameters of the cleaning composition by using organic cationic inhibitors instead of traditional inorganic inhibitors. This parameter change transforms the composition from corrosive to non-corrosive, allowing effective cementitious material removal without damaging metal surfaces
2Productivity
If traditional cleaning compositions are used, then cementitious materials are removed, but surface coatings and underlying metals are dissolved
Solution Approach 1:
The organic cationic inhibitor acts as a protective intermediary between the cleaning composition and surface coatings. It selectively protects organic-based coatings from dissolution by acidic components while allowing the composition to effectively remove inorganic cementitious materials
Solution Approach 2:
The patent modifies the chemical composition parameters by incorporating organic cationic inhibitors, which change the interaction mechanism from destructive (dissolution) to selective (removal of cementitious materials only), preserving surface coatings and underlying metals
3Productivity
If compositions containing RCRA materials are used for outdoor washing, then cementitious materials are removed, but environmental contamination and regulatory compliance issues occur
Solution Approach 1:
The patent extracts and eliminates harmful RCRA materials (arsenic, barium, cadmium, chromium, lead, mercury, selenium, silver) from the cleaning composition. By removing these toxic components while retaining effective cleaning agents (HCl, urea) and adding environmental-safe inhibitors, the composition achieves both effective cementitious material removal and environmental safety
Solution Approach 2:
The patent changes the environmental safety parameters of the composition by replacing regulated RCRA materials with non-regulated organic cationic inhibitors. This parameter change transforms the composition from environmentally hazardous to environmentally safe, enabling outdoor use without groundwater contamination risks
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 significantly reduces corrosion levels and eliminates the risk of environmental contamination, ensuring the longevity of metal surfaces and compliance with environmental regulations by preventing corrosion and rusting, while maintaining surface integrity.
Implementation Method 1
The composition comprises an organic, cationic inhibitor for both corrosion and flash rusting that minimizes pitting and attack on metal and alloy surfaces
Implementation Method 2
The removal of water-insoluble cementitious and lime materials from surfaces is known to be a difficult process. Compositions that have been known for use in the past have included acid (e.g., hydrochloric, hydrofluoric, phosphoric, and sulfuric) washes
Data Source
AI summary
A composition is provided for use in cleaning a surface of a cementitious material. The composition includes HCl, urea, complex substituted keto-amine-hydrochloride, an alcohol, an ethoxylate, and a ketone. A method of using the composition includes applying the composition to a surface from which it is desired to clean a cementitious material and removing the composition and released cementitious material from the surface.