Selective nitration process
First Claim
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1. THE PROCESS OF PREPARING 4-NITRO-2,6-DIALKYL PHENOLS IN WHICH EACH ALKYL GROUP IS BRANCHED ON ITS ALPHA CARBON ATOM, WHICH COMPRISES NITRATING THE CORRESPONDING 2,6-DIALKYL PHENOL WITH 30 TO 70 PERCENT NITRIC ACID AT A TEMPERATURE RANGING FROM ABOUT 0 TO ABOUT 40* C., THE REACTION BEING CARRIED OUT IN AN INERT LIQUID HYDROCARBON SOLVENT.
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1 Claim
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1. THE PROCESS OF PREPARING 4-NITRO-2,6-DIALKYL PHENOLS IN WHICH EACH ALKYL GROUP IS BRANCHED ON ITS ALPHA CARBON ATOM, WHICH COMPRISES NITRATING THE CORRESPONDING 2,6-DIALKYL PHENOL WITH 30 TO 70 PERCENT NITRIC ACID AT A TEMPERATURE RANGING FROM ABOUT 0 TO ABOUT 40* C., THE REACTION BEING CARRIED OUT IN AN INERT LIQUID HYDROCARBON SOLVENT.
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Current AssigneeMargaret E. Griffing, Thomas H. Coffield
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Original AssigneeMargaret E. Griffing, Thomas H. Coffield
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InventorsCoffield, Thomas H., Griffing, Margaret E.
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Application NumberUS03/635,122Time in Patent Office721 DaysField of SearchUS Class Current568/706CPC Class CodesC07C 201/08 by substitution of hydrogen...C07C 205/22 having one nitro groups bou...Y10S 524/929 Natural rubber broadly disc...
