Hoechst Aktiengesellschaft

Cassella Aktiengesellschaft

Walter Rupp

Manfred Finke

Hans-Jerg Kleiner

Gerd Reinhardt

Hermann Bieringer

Joachim Ribka

Friedrich Engelhardt

Walter Dursch

Peter Langeluddeke

Karl Hintermeier

Hanspeter Gethoffer

Erwin Weiss

Frank Jaekel

Manfred Schmidt

Gerhart Schneider

Klaus Dehmer

Fritz-Feo Grabley

Rainer Mundnich

Georg Bader

Eva M Kohn

Aminoaryl .beta.-sulfatoethyl sulfone compounds, such as, for example 4-(.beta.-sulfatoethylsulfonyl)-aniline, can be prepared in a quick and easy manner from their corresponding .beta.-hydroxyethyl sulfone compounds by sulfation by spraying a solution or suspension or paste of this aminoaryl .beta.-hydroxyethyl sulfone compound or the acylamino compound thereof in sulfuric acid or aqueous sulfuric acid into a hot inert gas stream of a convection dryer. In this procedure, the drying, esterification reaction and the hydrolysis of any acylamino group present takes place synchronously. The sulfato compound is preferably obtained in the form of granules.

Process for the preparation of aminoaryl .beta.-sulfatoethyl sulfone

Sulfimidoperoxycarboxylic acids of the formula ##STR1## in which A is a group of the formula ##STR2## n is the number 0, 1 or 2, R.sup.1 is hydrogen, fluorine, chlorine, bromine, C.sub.1 -C.sub.20 - alkyl, C.sub.2 -C.sub.20 -alkenyl, aryl or C.sub.1 -C.sub.10 -alkylaryl,

Sulfimidoperoxycarboxylic acids

Styrylaryloxy ether sulfonates of the formula ##STR1## in which either R.sub.1 denotes styryl and simultaneously R.sub.2 and R.sub.3 are identical or different and denote hydrogen or styryl, or R.sub.1 and R.sub.2 are nonidentical and each denote methyl or styryl and simultaneously R.sub.3 denotes hydrogen or styryl, x denotes a number from 2 to 20, and M denotes an ammonium or alkali metal cation. These compounds are suitable as surfactant auxiliaries in oil recovery.

Styrylaryloxy ether sulfonates, a process for their preparation and

A process for the preparation of acyloxybenzenesulfonic acids and salts thereof, of the formula ##STR1## in which R is C.sub.1 -C.sub.17 -alkyl or C.sub.2 -C.sub.17 -alkenyl and M is an alkali or alkaline earth metal, ammonium or hydrogen, including the stages of (a) sulfonation of phenol, if appropriate (b) thermal treatment of the sulfonated phenol, (c) esterification of the sulfonated phenol and if appropriate (d) neutralization of the ester, wherein the sulfonation of the phenol is carried out with sulfuric acid or oleum and the water of reaction is removed during or after stage (b) by distillation and/or by reaction with a dehydrating agent.

Process for the preparation of acyloxybenzenesulfonic acids and salts

2-(Meth)acrylamido-2-methylpropanephosphonic acid is prepared by reaction of 2-methylprop-1-ene-1-phosphonic acid or 2-methylpro-2-ene-1-phosphonic acid with (meth)acrylonitrile in the presence of an equimolar amount of a strong acid. The compounds are suitable as such or in the form of their salts as comonomer for the manufacture of copolymers, which are used inter alia as dyeing auxiliaries and as scale inhibitors.

2-Acrylamido- and 2-methacrylamido-2-methyl propanephosphonic acids and

Cyanohydrin acylates of aldehydes are manufactured by reacting aldehydes with aqueous solutions of cyanides and organic acid chlorides or anhydrides in the molar ratio of aldehyde:cyanide:acid chloride or anhydride of 1:1:1 with deviations of at most only about 10%, optionally in the presence of an inert organic solvent immiscible with water in a one-stage process. The process products are intermediates mainly in the fields of pharmaceuticals and plant protection.

Process for the manufacture of cyanohydrin acylates of aldehydes

Improved polyesters soluble or dispersible in water having an apparent average molecular weight of 800 to 5,000 and containing phosphonic ester moieties are useful as levelling auxiliaries for uniform dyeing and are produced by esterifying dibasic acids and dihydric alcohols, either or both of which contain phosphonic acid moieties, phosphonic acid ester moieties or both.

Polyester which is soluble or dispersible in water, a process for its

Herbicidal agents, containing as active ingredient a compound of the formula ##STR1## or their salts with acids, are useful for combatting a great variety of mono- and dicotyledonous weeds. In the formula R.sub.1 is methyl or halomethyl, R.sub.2 is OH, SH, OM or SM (M=equivalent of a base), R.sub.3 is the same as R.sub.2 or an ester, amide or hydrazide group, R.sub.4 and R.sub.5 are preferably hydrogen and X is oxygen or sulfur.

Herbicidal agents

2,5-Dioxo-1,2-oxa-phospholanes of the formula (I) ##STR1## wherein R.sup.1 is an organic radical and R.sup.2 and R.sup.3 each also represents an organic radical or hydrogen, are prepared by reacting 2-haloformylethyl-phosphinic acid halides of the formula (II) ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 are defined as in formula (I) and X means Cl or Br, preferably Cl, with an approximatey equimolar quantity of acrylic acid. The compounds (II) may also be produced in the reaction batch and in situ by reacting about equimolar quantities of a dihalophosphine of the formula (III) ##STR3## with an .alpha.,.beta.-unsaturated acid (IV)

Process for the simultaneous preparation of

A process for the preparation of ethane-1,2,-diphosphinic acid diesters of the formula ##STR1## where R.sub.1 represents alkyl, phenyl and/or phenalkyl groups having from 1 to 18 carbon atoms and R.sub.2 alkyl groups having from 1 to 18 carbon atoms, which may be optionally substituted by halogen atoms, which comprises reacting phosphonous acid esters of the formula ##STR2## where R.sub.1 and R.sub.2 are as define above, with acetylene in the presence of catalytic amounts of radical-forming agents and/or with UV irradiation.

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Konigstein, Germany

Walter Rupp