Isolation and purification of phosphonitrilic chloride adducts

Claim 1

THE PROCESS FOR THE ISOLATION AND PURIFICATION OF THE ADDUCT OF CYCLIC PHOSPHONITRILLIC CHLORIDE AND A POLYHYDROXY AROMATIC COMPOUND, FORMED IN THE PRESENCE OF A TERTIARY AMINE, THE PN RINGS OF SAID PHOSPHONITRILIC CHLORIDE BEING PRESENT IN SAID ADDUCT, WHICH COMPRISES INTRODUCING A WATER SOLUBLE SOLVENT SOLUTION OF THE CRUDE OIL CONTAINING SAID ADDUCT AND IMPURITIES OF THE CONDENSATION REACTION FOR PRODUCING SAID ADDUCT, INCLUDING TERTIARY AMINE HYDROCHLORIDE, IN THE FORM OF A STREAM INTO A BODY OF FLOWING WATER, SAID ADDUCT BEING INSOLUBLE IN WATER AND SAID IMPURITIES BEING SOLUBLE IN SAID BODY OF WATER, PRECIPITATING SAID ADDUCT IN SAID WATER AND DISSOLVING THEREIN SAID IMPURITIES AND SOLVENT, THE RATE OF INTRODUCTION OF SAID SOLUTION INTO SAID WATER BEING CONTROLLED TO PRODUCE A LIGHT FLOCCULENT SOLID PRECIPITATE REMOVING A MIXTURE CONTAINING SAID WATER, SOLVENT AND PRECIPITATE, AND RECOVERING SAID SOLID FROM THE RESULTING MIXTURE.