Low hazard corrosion inhibitors and cleaning solutions using quaternary ammonium salts
1. Field of the Invention The present invention is directed to methods for preparing quaternary ammonium salts, particularly pyridinium and quinolinium salts. By preparing these salts in a solvent selected from the group consisting of propylene glycols, propylene glycol ethers and mixtures thereof,...
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| Format: | Patent |
| Sprache: | eng |
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