Process for the production of monochloroacetic acid
First Claim
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1. IN A PROCESS FOR THE PRODUCTION OF MONOCHLOROACETIC ACID, THE STEP COMPRISING CHLORINATING A MIXTURE CONTAINING ABOUT 15% TO 75% GLACIAL ACETIC ACID AND ABOUT 85% TO 25% ACETIC ANHYDRIDE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 70* C. TO ABOUT 110* C. TO FORM A REACTION MIXTURE CONTAINING PREDOMINANTLY MONOCHLOROACETIC ACID, AND THEREAFTER ADDING WATER TO THE REACTION MIXTURE UNTIL THE CRYSTALLIZING POINT OF THE REACTION MIXTURE IS IN THE RANGE OF FROM ABOUT 59* C. TO THE CRYSTALLIZING POINT OF SUBSTANTIALLY PURE MONOCHLOROACETIC ACID (ALPHA MODIFICATION) AFTER REMOVAL OF THE HYDROGEN CHLORIDE FORMED.
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1 Claim
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1. IN A PROCESS FOR THE PRODUCTION OF MONOCHLOROACETIC ACID, THE STEP COMPRISING CHLORINATING A MIXTURE CONTAINING ABOUT 15% TO 75% GLACIAL ACETIC ACID AND ABOUT 85% TO 25% ACETIC ANHYDRIDE AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 70* C. TO ABOUT 110* C. TO FORM A REACTION MIXTURE CONTAINING PREDOMINANTLY MONOCHLOROACETIC ACID, AND THEREAFTER ADDING WATER TO THE REACTION MIXTURE UNTIL THE CRYSTALLIZING POINT OF THE REACTION MIXTURE IS IN THE RANGE OF FROM ABOUT 59* C. TO THE CRYSTALLIZING POINT OF SUBSTANTIALLY PURE MONOCHLOROACETIC ACID (ALPHA MODIFICATION) AFTER REMOVAL OF THE HYDROGEN CHLORIDE FORMED.
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Current AssigneeCharles M. Eaker
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Original AssigneeCharles M. Eaker
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InventorsEaker, Charles M.
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Application NumberUS03/111,582Time in Patent Office521 DaysField of SearchUS Class Current562/603CPC Class CodesC07C 51/363 by introduction of halogen;...C07C 53/16 Halogenated acetic acids
