| 摘要 |
<p>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> |
