Water-based metal rust inhibitor
The technology of a water-based rust inhibitor and cyclohexylamine citric acid is applied in the field of metal rust inhibitors, and can solve the problems of the rust inhibitor's rust-proof performance, the convenience of preparation and the production cost that needs to be improved, the anti-corrosion performance is not ideal, and the like, and achieves good anti-rust performance. Rust effect, preventing corrosive medium from contacting metal, high yield effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example 1
[0037] Weigh 210 grams of citric acid monohydrate into a 1000 mL beaker, add 400 mL of pure water and stir to dissolve, filter and clarify for later use. Add 317 grams of cyclohexylamine in another 1000mL beaker, slowly add the filtered and clear citric acid solution under stirring (50r / min), and react completely at 80°C. At this time, the solution is transparent, and the pH of the solution is 8.5. Heat and concentrate until a crystal film appears, pour the concentrated crystals into a clean dish and let cool to form a block, then make small blocks and dry at 85°C for 4 hours to obtain 451.4 g of the product, with a yield of 98.4%. Detection, the content is 99.3% (in (C 6 h 13 N) 3 ·C 6 h 8 o 7 meter), the contents of C1, F, and Br are all <10ppm.
preparation example 2
[0039] Weigh 210 grams of citric acid monohydrate into a 1000 mL beaker, add 400 mL of pure water and stir to dissolve, filter and clarify for later use. Add 307 grams of cyclohexylamine in another 1000mL beaker, slowly add the filtered and clear citric acid solution under stirring (50r / min), and react completely at 80°C. At this time, the solution is transparent, and the pH of the solution is 7.5. Heat and concentrate until a crystal film appears, pour the concentrated crystals into a clean dish and let cool to form a block, then make small blocks and dry at 80°C for 4 hours to obtain 445.8 g of the product, with a yield of 97.2%. Detection, the content is 99.1% (in (C 6 h 13 N) 3 ·C 6 h 8 o 7 meter), the contents of Cl, F, and Br are all <10ppm.
preparation example 3
[0041] Weigh 210 grams of citric acid monohydrate into a 1000 mL beaker, add 400 mL of pure water and stir to dissolve, filter and clarify for later use. Add 327 grams of cyclohexylamine in another 1000mL beaker, slowly add the filtered and clear citric acid solution under stirring (50r / min), and react completely at 90°C. At this time, the solution is transparent, and the pH of the solution is 9. Heat and concentrate until a crystal film appears, pour the concentrated crystals into a clean dish and let cool to form a block, then make small blocks and dry at 95°C for 3 hours to obtain 453.6 g of the product, with a yield of 98.9%. Detection, the content is 99.3% (in (C 6 h 13 N) 3 ·C 6 h 8 o 7 meter), the contents of Cl, F, and Br are all <10ppm.
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com