Übersetzung für "Bromic acid" in Deutsch

The process as claimed in claim 1, wherein the oxidizing agents for the stabilization are those from the series of chloric acid, chlorous acid, bromic acid, iodic acid, perchloric acid, chromic acid, dichromic acid, vanadic acid, peroxodisulfuric acid or salts thereof, iron(III) compounds or oxidizing organic compounds from the series of N-halogenamides or quinones.

Such measures are costly and in the case of mechanically deformable parts such as membranes have only limited success, in particular in highly aggressive media such as fluorine, bromic acid and their compounds which are typically used in vacuum etching processes.

It is thus possible to use inorganic acids such as sulfuric acid or hydrohalic acids such as hydrochloric acid, bromic acid or phosphoric acids such as orthophosphoric acid, nitric acid, sulfamic acid, aliphatic, alicyclic, araliphatic, aromatic or heterocyclic monobasic or polybasic carboxylic acids, sulfonic acids or sulfuric acid derivatives such as formic acid, acetic acid, pronionic acid, pivalic acid diethylacetic acid, malonic acid, succinic acid, pimelic acid, fumaric acid, maleic acid, lactic acid, tartaric acid, malic acid, benzoic acid, salicylic acid, 2-phenylpropionic acid, citric acid, gluconic acid, ascorbic acid, nicotinic acid, isonicotinic acid, methanesulfonic acid or ethanesulfonic acid, ethanedisulfonic acid, 2-hydroxyethanesulfonic acid, benzenesulfonic acid, paratoluenesulfonic acid, naphthalenemonosulfonic acid and naphthalenedisulfonic acid and sulfuric acid lauryl ester.

In order to prepare an alkylsulfonyl compound of formula I oxidation is conveniently carried out with one or more equivalents of the oxidizing agent used, e.g. with hydrogen in glacial acetic acid or in formic acid at 20° to 100° C. or in acetone at 0° to 60° C., with a peracid such as performic acid or m-chloroperbenzoic acid in glacial acetic acid, trifluoroacetic acid or chloroform at 0° to 50° C., or with bromic acid or potassium permanganate in glacial acetic acid, water/sulfuric acid or in acetone at 0° to 20° C. Thus, if a compound of formula I used contains an alkylmercapto group, subsequent oxidation is preferably carried out with two or more equivalents of the oxidizing agent in question and, accordingly, with at least one equivalent if a compound of formula I used contains an alkylsulfinyl group.

To this end, the oxidative treatment may, for example, contain oxidation in an aqueous bath containing oxidizing agent, anodic oxidation in an aqueous bath containing electrolyte and/or oxidation in a gas stream containing an oxidizing agent, for example at 400° C. to 600° C. Any routine oxidizing agent may be used as the oxidizing agent, such as alkali (earth) metal salts, for example alkali (earth) metal nitrates, sulfates, chlorates, bromates or iodates, or oxidizing acids for example nitric acid, sulfuric acid, chloric acid, bromic acid or iodic acid.