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Patents
Organic Compounds -- Part Of The Class 532-570 Series Patents
Organic Compounds (class 532, Subclass 1)
Oxygen Containing (e.g., Perchlorylbenzene, Etc.) Patents
Nitro Containing (including Aci Forms) Patents (Class 568/924)
Nitro Containing (including Aci Forms) Patents (Class 568/924)
With preservative or stabilizer (Class 568/925)
Nitronic acid or group ia or iia light metal containing (e.g., aci forms, etc.) (Class 568/926)
Benzene ring containing (Class 568/927)
Plural rings containing (Class 568/928)
Polycyclo ring system (Class 568/929)
Polynitro (Class 568/930)
Polynitro (Class 568/931)
Polynitro (Class 568/932)
Halogen containing (Class 568/933)
Single methyl and plural nitros only bonded directly to benzene ring (e.g., dinitrotoluene, etc.) (Class 568/934)
Trinitrotoluene (Class 568/935)
Halogen containing (Class 568/936)
Halogen bonded directly to benzene ring (Class 568/937)
Plural halogens bonded directly to benzene ring (Class 568/938)
Nitro bonded directly to benzene ring (Class 568/939)
Methyl bonded directly to benzene ring (e.g., nitroxylene, etc.) (Class 568/940)
Polycyclo-alicyclic ring system (Class 568/941)
Six-membered alicyclic ring containing (Class 568/942)
Acyclic (Class 568/943)
Polynitro (Class 568/944)
Halogen containing (Class 568/945)
Halogen containing (Class 568/946)
Nitroalkanes (Class 568/947)
Nitromethane (Class 568/948)
Recovery of nitrated aromatic compounds from nitration wash liquors
Patent number:
4241229
Abstract:
The wash liquor resulting from the nitration of aromatic compounds is contacted with a quantity of the same aromatic compound being nitrated and the resultant solution is recycled to the nitration process.
Type:
Grant
Filed:
August 8, 1979
Date of Patent:
December 23, 1980
Assignee:
American Cyanamid Company
Inventor:
Verner Alexanderson
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