Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1980-07-23
1981-11-24
Siegel, Alan
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
C07C14324
Patent
active
043024033
ABSTRACT:
Unreacted sulfuric acid contained in a disulfonic acid product of an aromatic hydrocarbon that is produced from the reaction of the aromatic hydrocarbon or the mono-sulfonic acid of the aromatic hydrocarbon with a strong sulfonating agent is removed from the disulfonic acid product by reacting the sulfuric acid with additional aromatic hydrocarbon to produce the mono-sulfonic acid of the aromatic compound. The disulfonic acid product of the aromatic hydrocarbon containing sulfuric acid is reacted with the aromatic hydrocarbon at a molar ratio of aromatic hydrocarbon to sulfuric acid in the range of about 0.25 to around 2 and at a temperature in the range of 130.degree. to 200.degree. C. to obviate the need to remove any water formed during the course of the reaction.
REFERENCES:
patent: 1227252 (1917-05-01), Dennis
patent: 1848883 (1932-03-01), Hill
patent: 2379585 (1945-07-01), Maguire
patent: 3636090 (1972-01-01), Luecken
Covelli Frederick M.
Dressler Hans
Reabe Kenneth G.
Brumback Oscar B.
Keane J. Timothy
Koppers Company Inc.
Siegel Alan
Zeh, Jr. Herbert J.
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