Stable peroxycarboxylic acid granules

US5246620A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hanspeter Gethoffer · Frankfurt am Main, DE
• Gerd Reinhardt · Kelkheim, DE
• Gerhard Noltner · Frankfurt am Main, DE
• Christoph Porz · Bonn, DE

Key dates

• Filing date: Apr 18, 1991
• Grant date: Sep 21, 1993
• Expiry date: Apr 18, 2011

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C11D3/3945
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Stable peroxycarboxylic acid granules, consisting essentially of (1) an imidoperoxycarboxylic acid or a salt thereof of the formula ##STR1## wherein A is a group of the formulae ##STR2## n is the number 0, 1 or 2, R.sup.1 is hydrogen, chlorine, bromine, C.sub.1 -C.sub.20 -alkyl, C.sub.1 -C.sub.20 -alkenyl, aryl or alkylaryl, PA0 R.sup.2 is hydrogen, chlorine, bromine or a group of the formula --SO.sub.3 M, --CO.sub.2 M or --OSO.sub.3 M, PA0 M is hydrogen, an alkali metal or ammonium ion or one equivalent of an alkaline earth metal ion and X is C.sub.1 -C.sub.19 -alkylene or arylene, and PA0 (2) an inorganic sulfate and/or phosphate salt and/or a nonoxidizable surfactant as granulation auxiliary and a copolymer based on alkenylaminomethylenephosphonic acids as a film-forming coating substance.