| 摘要 |
A process for the production of a synthetic clay mineral having a hectorite structure but containing no or little lithium, in which process potassium is present in the reaction mixture during the precipitation or during the hydrothermal treatement, gives process advantages in the time taken to prepare the reaction mixture and in the ability to use a relatively low autoclave pressure for a lithium-free hectorite. The potassium-containing lithium-free or low lithium synthetic hectorite product can be dispersed to give a particularly clear dispersion and may be compatible with food usage. |
