PROCESSES AND COMPOSITIONS FOR CLEANING MIXING DEVICES TO IMPROVE POLYCARBONATE PRODUCTION

A cleaning mixture comprising polymeric resin pellets having a Rockwell R hardness of 85 to 140, water, and a surfactant salt comprising at least one of sulfonate salts, C6 to C36 carboxylic acid salts, or mixtures thereof, is used to purge the mixing device. The cleaning mixture has a pH of 6.0 to...

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Bibliographische Detailangaben
1. Verfasser:	EHRENSBECK, FRANKLIN J
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMISTRY COMPOSITIONS BASED THEREON DETERGENT COMPOSITIONS DETERGENTS FATTY ACIDS THEREFROM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS RECOVERY OF GLYCEROL RESIN SOAPS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SOAP OR SOAP-MAKING THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF SINGLE SUBSTANCES AS DETERGENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	A cleaning mixture comprising polymeric resin pellets having a Rockwell R hardness of 85 to 140, water, and a surfactant salt comprising at least one of sulfonate salts, C6 to C36 carboxylic acid salts, or mixtures thereof, is used to purge the mixing device. The cleaning mixture has a pH of 6.0 to 9.0.