Continuous process for reacting a basic group h metal compound and a phosphorus acid

Claim 1

IN THE PROCESS OF REACTING A BASIC GROUP II METAL COMPOUND AND PHOSPHINODITHIOIC ACID TO FROM A LIQUID PRODUCT, THE STEPS OF CONTINUOUSLY CIRCULATING IN A CLOSED SYSTEM A SLURRY OF SAID BASIC GROUP IIMETAL COMPOUND, A MAJOR PROPORTION OF THE LIQUID PHASE OF SAID SLURRY BEING INERT TO THE DESIRED REACTION, INTRODUCING INTO SAID CLOSED SYSTEM SAID BASIC GROUP II METAL COMPOUND AND SAID PHOSPHINODITHOIC ACID, AT RATES SO AS TO MAINTAIN SAID BASIC GROUP II METAL COMPOUND AT EVERY POINT IN SAID SYSTEM IN AMOUNTS GREATLY IN EXCESS OF THE MINIMUM AMOUNTS REQUIRED FOR COMPLETE REACTION WITH THE AMOUNT OF SAID PHOSPHINODITHIOIC ACID PRESENT AT THAT POINT, MAINTAINING THE TEMPERATURE OF THE CONTINUOUSLY CIRCULATING STREAM OF SAID SLURRY FOR A SUBSTANTIAL PORTION OF A CIRCULATING CYCLE AT A TEMPERATURE FAVORABLE TO THE DESIRED REACTION AND DRAWING OFF FROM THE SYSTEM A LIQUID PRODUCT AT ABOUT ITS RATE OF FORMATION.