Process for sulfonation

Details Process for sulfonation Process for sulfonation

1976-07-12

1978-04-25

Gerstl, Robert

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260401, 260457, 260458R, 260459R, 260504R, 260505E, 260505S, 260513T, C08H 300, C07C15102, C07C14324

Patent

active

040862569

ABSTRACT:
Sulfonation of a sulfonatable organic compound is effected by means of a two-stage reaction with an SO.sub.3 -containing gas, in which the first-stage reaction is carried out by flowing, in parallel flow relation, said organic compound and said SO.sub.3 -containing gas upwardly into the lower ends of a plurality of vertically positioned cylinders or double-cylinders, and the second-stage reaction is carried out by the steps of collecting the reaction product of the first-stage reaction, adding fresh SO.sub.3 -containing gas to the reaction product thus collected and flowing in parallel flow arrangement the reaction mixture downwardly into the upper end of a vertically positioned cylinder or double-cylinder.

REFERENCES:
patent: 2923728 (1960-02-01), Falk et al.
patent: 3198849 (1965-09-01), Ballestra

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