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Nitrokemia Ipartelepek

Nehezvegyipari Kutato Intezet

Mta Mezogazdasagi Kutato Intezet

Ervin Vertesi

Zoltan Kolonics

Miklos Kovacs

Elemer Tomordi

Jeno Pelyva

Miklos Nadasy

Laszlo Lendvai

Balint Nagy

Andras Vass

Karoly Olah

Tamas Drozda

Peter Aranyi

Laszlo Beliczay

Taszlo Kulcsar

Andras Haas

Laszlo J Szabo

Bela Gyorfi

Gyorgy Huszak

Endre Sumegi

Kornelia Domjan Nee Pinter

Gyorgy Csoor

Gyorgy Borsi

Istvan Gemes

Katalin Novotnik

Miklos Nyari

Levente Kotsis

Zoltan Nagy

An absorbent composition for purifying gases which contain acidic components. The composition contains at least one compound of formula (I), wherein n is 2-6, p is 1-3, the R,groups may be the same or different and represent hydrogen or C,alkyl, and R,is hydrogen, C,alkyl or a group of formula (II). The composition is an aqueous solution of 20-60 w/w %.

Absorbent composition for purifying gases which contain acidic components

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

Ervin Vertesi