Mol Magyar Olaj- Es Gazipari Reszvenytarsasag

Mol Magyar Olaj- Es Gazipari Rt.

Jozsef Petro

Janos Forstner

Bela Jover

Jozsef Toth

Laszlo Szirmai

Istvan Czagler

Gabriella Borbely

Laszlo Kantor

Hermann Beyer

Pal Feher

Maria Balai

Jozsef Szollosi

Jozsef Horvath

Laszlo Zsida

Jeno Baladincz

Gabor Georgiades

Ferenc Miko

Janos Kiss

Imre Kovacs

Gyula Sztreharszki

Gyula Raksi

Istvan Lencse

Karoly Csergo

Jozsef Perger

Imre Fekete

Erno Ratosi

Szabolcs Szoboszlay

Janos Gergely

Gabriella Pecsvari Szalmasne

Catalyst for hydrocracking and method for catalytic hydrodewaxing of gas

The invention relates to improved manufacture of methylene bis-(dibutyl-dithiocarbamate) with ASTM coulour less than 2, by reacting aqueous solutions of dibutyl amine and sodium hydroxide with carbon disulfide, treating the obtained reaction product with methylene dichloride, followed by vacuum stripping, phase separation and filtration of the precipitated sodium chloride. According to the invention, during reaction with carbon disulfide the temperature of the mixture is kept at or below 15.degree. C. and the vacuum stripping is performed in two steps, first between 45.degree. C. and 100.degree. C. and at a pressure of 5-50 kPa, then phase separation is carried out at a temperature between 35.degree. C. and 50.degree. C., followed by stripping the separated organic phase in vacuum also at a temperature between 45.degree. C. and 100.degree. C. and at a pressure of 5-50 kPa.

Process for manufacturing methylene-bis (dibutyl-dithiocarbamate) with

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Szazhal ombatta, Hungary

Jozsef Petro