Nehezvegyipari Kutato Intezet

Nitrokemia Ipartelepek

Mta Mezogazdasagi Kutato Intezet

Balint Nagy

Zoltan Kolonics

Miklos Kovacs

Jeno Pelyva

Elemer Tomordi

Miklos Nadasy

Laszlo Lendvai

Ervin Vertesi

Andras Vass

Gabor Szudy

Kornelia Domjan Nee Pinter

Jeno Hevesi

Arpad Vago

Endre Sumegi

Adamne N Gesztelyi

Gyorgy Huszak

Janos Gyapai

Jozsef Keszler

Bela Gyorfi

Laszlo J Szabo

Andras Haas

Taszlo Kulcsar

The invention relates to a process for producing aqueous and oily, sulfur containing products. The invention also relates to an apparatus for producing aqueous and oily, sulfur containing products, which comprises a feeder, mixing unit and a unit for separating the liquid and solid phases. In the process a dispersion is prepared from lime sulfur solution, a surface active material and oil. In the apparatus the feeder includes a wet mill, the charging pump delivering the suspension thus obtained, the mixing unit is provided with a heating jacket, agitator, a cooler and a unit for separating the liquid and solid phases. The apparatus comprises a further mixing unit with a storage tank equipped with a charging pump and dispergator. The feeder, the mixing unit and the further mixing unit are interconnected by pipes.

Apparatus for preparing aqueous and oily, sulfur containing products

The invention relates to an improved method for the preparation of a 2',6'-dialkyl-N-alkoxymethyl-2-chloro-acetanilide compound of the general formula (I), ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are identical or different and stand for straight-chained or branched C.sub.1-4 alkyl groups. According to the invention a dialkyl aniline of the general formula (II), ##STR2## wherein R.sub.1 and R.sub.2 are as defined above, is treated with aqueous formaldehyde solution in an apolar solvent at a temperature of 30.degree. to 80.degree. C., the solution of the resulting oxymethyl derivative formed with said apolar solvent is separated from the aqueous formaldehyde solution at an elevated temperature and then dehydrated, the resulting azomethine derivative is reacted with chloroacetyl chloride in the same apolar solvent medium, the resulting chloromethyl compound is reacted with an alcohol of the general formula (V),

Process for the preparation of

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Veszprem, Hungary

Balint Nagy