Preparation of glycerol sulfuric acids

Claim 1

A PROCESS FOR THE PRODUCTION OF GLYCEROL TRISYLFURIC ACID FREE OF SULFUR TRIOXIDE WHICH COMPRISES REACTING, AT A TEMPERATURE BETWEEN 15*C. AND 45*C., ONE MOLECULAR PROPORTION OF SUBSTANTIALLY ANHYDROUS GLYCEROL WITH BETWEEN 2.5 AND 3.5 MOLECULAR PROPORTIONS OF NONGASEOUS SULFUR TRIOXIDE, IN SULFURIC ACID MEDIUM, WHICH MEDIUM CONTAINS BETWEEN 2.2 AND 3.5 MOLECULAR PROPORTIONS OF SULFRIC ACID MONOHYDRATE, THE NUMBER OF MOLECULAR PROPORTIONS OF SULFURIC ACID MONOHYDRATE BEING APPROXIMATELY DETERMINED BY THE EQUATION X=2.2+2(3-Y), WHERE X IS THE NUMBER OF MOLECULAR PROPORTIONS OF SULFRIC ACID MONOHYDRATE, AND Y IS THE NUMBER OF MOLECULAR PROPORTIONS OF SULFUR TRIOXIDE, THE TERM 2(3-Y) BEING CONSIDERED NO LESS THAN ZERO IN DETERMINING X, AND, WHEN Y IS OVER 3.0, BLOWING THE RESULTING PRODUCT WITH AN UNREACTIVE GAS UNTIL ALL UNREACTED SULFUR TRIOXIDE IS REMOVED.