Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Patent
1990-06-28
1991-10-08
Miller, Edward A.
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
2521823, 562 33, C07C14302
Patent
active
050556100
ABSTRACT:
The mixture from which sulphuric acid must be separated according to the present invention are those which derive from the sulphoxidation of (C.sub.12 -C.sub.8)-n-paraffins with SO.sub.2 and O.sub.2 in the presence of water and of U.V. light at a temperature comprised within the range of from 25 to 50.degree. C., after the removal of n-paraffins, which separate spontaneously, and of SO.sub.2 excess. In order to remove said sulphuric acid, the refined mixture, possibly diluted with water, is mixed with one or more halogenated solvents, the separation being obtained of water and sulphuric acid from the refined mixture, to the total mixture (with the two phases) a cosolvent is added, which is constituted by alcohols or ethers, with the separation being obtained of a phase constituted by H.sub.2 O and H.sub.2 SO.sub.4, which is removed. The residual organic phase, practically free from sulphuric acid, is submitted to the removal of solvents and cosolvents by means of conventional techniques.
REFERENCES:
patent: 2263041 (1941-11-01), Lazar et al.
patent: 2530757 (1950-11-01), Bransky et al.
patent: 3164547 (1965-01-01), Brunel et al.
patent: 4178307 (1979-12-01), Boy et al.
patent: 4310473 (1982-01-01), Springmann et al.
patent: 4321214 (1982-03-01), Nicolet
patent: 4557873 (1985-12-01), Pistorius
patent: 4565564 (1984-06-01), Stapp
patent: 4652343 (1987-03-01), Sridhar
patent: 4680147 (1987-07-01), Pistorius
patent: 4808343 (1989-02-01), Pistorius
Borgarello Enrico
Faggian Lucio
Franco Cosimo
Platone Edoardo
Enichem Augusta S.p.A.
Eniricerche S.p.A.
Miller Edward A.
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