Washing liq. for cleaning printed circuit surface - contains xylene, glycol mono:butyl ether, isobutanol and opt. toluene and (m)ethanol

A washing liq. consisting of xylene (I), glycol monobutyl ether (II), and isobutanol (III), is used for cleaning circuit surfaces coated with a resin-, rosin- or aminoalcohol-based flux, remaining after soldering. The mixts. have flash points >21 degrees C and can be used in a brush roller cleani...

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Bibliographische Detailangaben
1. Verfasser:	KUENZIG,HERBERT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CHEMICAL SURFACE TREATMENT CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FATTY ACIDS THEREFROM INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY PERFORMING OPERATIONS PRINTED CIRCUITS RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING SOLDERING OR UNSOLDERING TRANSPORTING USE OF SINGLE SUBSTANCES AS DETERGENTS WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A washing liq. consisting of xylene (I), glycol monobutyl ether (II), and isobutanol (III), is used for cleaning circuit surfaces coated with a resin-, rosin- or aminoalcohol-based flux, remaining after soldering. The mixts. have flash points >21 degrees C and can be used in a brush roller cleaning machine. A pref. washing liq. mixt., having flash point 24-26 degrees C, contains, by vol., 30% (I), 32.5% (II) and 37.5% (III). (I) may be replaced, opt. entirely, by toluene, and (III) by EtOH and/or MeOH, but these exchanges result in a lowered flash point.