| 摘要 |
THE INVENTION RELATES TO METHODS FOR PRODUCING CALCIUM CARBONATE HYDROXODIALUMINATES THAT COMPRISE A HEXAGONAL PLATELET-SHAPED CRYSTAL HABIT AND HAVE FORMULA Ca m, Al?(OH)?+?(m-?)An * nH?O. WHEREIN m = 3.5 TO 4.5, An = CARBONATE THAT CAN BE PARTIALLY SUBSTITUTED WITH PERCHLORATE AND/OR TRIFLUOROMETHANESULFONATE (TRIFLATE), AND n= 0 TO 6. SAID METHODS ENCOMPASS THE FOLLOWING STEPS: (A) CALCIUM OXIDE OR CALCIUM HYDROXIDE IS REACTED WITH OPTIONALLY ACTIVATED ALUMINUM OXOHYDROXIDE OR ALUMINUM HYDROXIDE AND IS SIMULTANEOUSLY OR SUBSEQUENTLY REACTED WITH A CARBONATE SOURCE CONTAINING CARBON DIOXIDE OR ALKALI (BI)CARBONATE; AND (B1) THE PRODUCT OBTAINED IN STEP (A) IS OPTIONALLY FURTHER REACTED WITH PERCHLORIC ACID AND/OR TRIFLUOROMETHANESULFONIC ACID. OR (B2) THE PRODUCT OBTAINED IN STEP (A) IS OPTIONALLY CALCINED AT 200ºC TO 900ºC, WHEREUPON IONS ARE EXCHANGED IN THE PRESENCE OF A PERCHLORATE SALT AND/OR TRIFLATE SALT, OPTIONALLY IN THE PRESENCE OF ALKALI (BI)CARBONATE, IN WATER. THE INVENTION FURTHER RELATES TO THE ALUMINATES OBTAINED IN SAID MANNER IN COMPOSITIONS AND STABILIZER SYSTEMS AS WELL AS THE USE THEREOF. |
