公开(公告)号：US3773816A

公开(公告)日：1973-11-20

申请号：US3773816D

申请日：1971-10-07

Applicant: DYNAMIT NOBEL AG

Inventor： HONIGSCHMID GROSSICH R ,  LENZ A ,  BLEH O ,  SANDAU W

IPC: C07F5/06 ,  C07C31/28

CPC classification number: C07F5/069

Abstract: THE PROCESS FOR PRODUCING AN ALKALI METAL ALUMINUM ALKOXIDE OF THE FORMULA MAL(OR)4 WHEREIN M IS AN ALKALI METAL AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL CONTAINING IN EXCESS OF THREE CARBON ATOMS, CYCLOALKYL AND ARALKYL, WHICH COMPRISES BOILING A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN EXCESS OF AN ALCOHOL OF THE FORMULA ROH AND A MIXTURE OF AT LEAST ONE ORGANIC SOLVENT INDIFFERENT IN RELATION TO THE OTHER REACTANTS AND AN EXCESS OF AN ALCOHOL OF THE FORMULA ROH WITH A MEMBER SELECTED FROM THE GROUP CONSISTING OF (A) A MIXTURE OF AN ALKALIMETAL HYDROXIDE AND ALUMINUM TRIHYDROXIDE, (B) A MIXTURE OF AN ALKALI METAL ALKOXIDE AND ALUMINUM TRIHYDROXIDE AND (C) AN ALKALI METAL ALUMINATE, AND REMOVING WATER FORMED IN THE REACTION. THE WATER IS PREFERABLY DISTILLED OFF FROM THE REACTION WITH EXCESS ALCOHOL, CONDENSED, THE WATER REMOVED FROM THE CONDENSATE BY LIME, SILICA GEL OR A ZEOLITE, AND THE WATER-FREE ALCOHOL IS RECYCLED TO THE REACTION UNTIL THE WATER CONTENT IN THE ALCOHOL DISTILLING OFF FALLS TO A VERY LOW LEVEL. ADVANTAGEOUSLY THE ALUMINUM IS USED IN SLIGHT EXCESS TO ENSURE THE PRODUCT IS FREE OF EXCESS ALKALI METAL ALKOXIDE.