Cassella Aktiengesellschaft

Clariant Corporation

Johannes Becherer

Ulrich Kussmaul

Bernhard Mees

Frank-Peter Lang

Rolf Muller

Karl-Heinz Keil

Reinhard Handte

Klaus Kuhlein

Peter Koch

Roman Morschh&auml;user

Alexander Lerch

Michael Wessling

Klaus Delpy

Herbert Wille

Kuno Reh

Manfred Langer

Hans J Nestler

Reinhardt Handte

Use of comb polymers as soil release polymers

The invention relates to oligoesters obtained by polycondensation of

Soil release oligoesters

The present invention relates to a process for the preparation of compounds of the formula 1 ##STR1## by reacting a secondary acid amide of the formula 2 ##STR2## with an acid chloride of the formula 3 ##STR3## in the presence of N,N-diisopropyl-N-ethylamine. R.sup.1, R.sup.2 and R.sup.3 are alkyl or alkenyl radicals, if required also aryl radicals. The compounds of the formula 1 are suitable for use as insecticides or bleach activators.

Process for the preparation of diacylimides

The present invention relates to a process for the preparation of N-ethylcarbazole by reaction of carbazole or N-ethoxycarbonylcarbazole with diethyl carbonate.

Process for the preparation of N-ethylcarbazole

The process for the preparation of 2-chlorobenzoxazoles of the formula ##STR1## wherein R.sup.1 and R.sup.2, independently of one another, are hydrogen or halogen comprising reacting a benzoxazolinone of the formula ##STR2## with a molar excess of phosphorus pentachloride.

Process for the preparation of 2-chlorobenzoxazoles

2-Mercaptobenzoxazoles of the formula ##STR1## wherein R is hydrogen or halogen and M is hydrogen or a metal atom, are prepared by reacting an ortho-aminophenol or metal salts thereof, with an alkali metal trithiocarbonate in aqueous solution.

Process for the preparation of 2-mercaptobenzoxazoles

A compound of the formula ##STR1## is reacted with a phenol of the formula ##STR2## in the presence of an acid to produce a heterocyclic phenyl ether of the formula ##STR3## wherein each R is independently selected from halogen, trifluoromethyl, nitro, cyano, alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms or alkylthio having 1 to 4 carbon atoms;

Process for the preparation of heterocyclic phenyl ethers

In the process for preparing 2-chlorobenzoxazoles of the formula ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is independently of one another, H, chloro or alkyl having 1 to 4 carbon atoms, which comprises reacting chlorine with 2-mercaptobenzoxazoles of the formula ##STR2## wherein the improvement comprises providing a melt of previously prepared 2-chloro-benzoxazole, adding the 2-mercaptobenzoxazole reactant to the 2-chlorobenzoxazole melt and simultaneously or subsequently passing chlorine into the melt, with the proviso that substituents R.sup.1 to R.sup.4 are identical in both the 2-chlorobenzoxazole melt and the 2-mercaptobenzoxazole reactant.

Process for preparing 2-chlorobenzoxazoles

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Maintal, Germany

Johannes Becherer