PAUL N ALLEN
Electrician at Lumberton Dr, Beaumont, TX

3944539, Mar 16, 1976

Dec 22, 1972

5/317868

Andrew G. Horodysky - Cherry Hill NJ
Paul T. Allen - Beaumont TX

Mobil Oil Corporation - New York NY

C07G 1700

260139

In preparing organic sulfides by reacting olefins (e. g. , butylenes) with a sulfur halide to form a sulfohalogenated intermediate which is subsequently sulfurized and dehalogenated by reaction with an aqueous solution of an alkali metal sulfide compound to form a noncorrosive organic sulfide product of high sulfur content, blackening of both the intermediate and the final product is prevented by employing an inert gas as a purge during formation of the olefin-sulfur halide adduct.

3960520, Jun 1, 1976

Mar 19, 1975

5/559842

Paul T. Allen - Beaumont TX

Mobil Oil Corporation - New York NY

B01D 5304, B01D 1508

55 59

A mixture of C. sub. 8 aromatics, including para-xylene, meta-xylene orthoxylene and ethyl benzene, is separated by an adsorption/desorption procedure to provide rapid recovery of the valuable components. In this process, the aromatic mixture is passed through at least two adsorption zones in series, preferably containing zeolite ZSM-5 adsorbent, in which zones the meta-xylene and ortho-xylene pass through relatively uninhibited, whereas the para-xylene and ethyl benzene are adsorbed. The meta-xylene and ortho-xylene are removed and can be distilled to effect separation or can be separated as described in U. S. Pat. No. 3,656,278. According to this invention, the para-xylene and ethyl benzene in the zones are then desorbed in parallel, that is, introducing a desorbent separately to each zone and recovering desorbed aromatics separately from each.