| 摘要 |
<p>"Organoclays" An organoclay material adapted specifically for use in a given system is selected by testing the system with organoclays made using a range of quaternary ammonium compounds having varying average carbon chain lengths, particularly by reacting suitable clays with mixed quaternary ammonium compounds, in order to determine the optimum C to N ratio in such quaternary ammonium compounds for that system. An organoclay is then manufactured substantially in accordance with the optimum ratio by utilising: one or more selected quaternary ammonium compounds designed substantially to achieve the optimum C to N ratio or a single quaternary ammonium compound which affords said C to N ratio.</p> |
