PERFLUOROCARBON COPOLYMER POWDERS AND PREPARATION BY SPRAY DRYING

The perfluorocarbon polymer powder coating composition consists essentially of spherical particles about 1 to 75 microns in diameter of an agglomerate of submicron particles of the perfluorocarbon polymer; the perfluorocarbon polymer preferably is a copolymer of tetrafluoroethylene and hexafluoropro...

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Bibliographische Detailangaben
1. Verfasser:	YALLOURAKIS, MICHAEL D
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DYES FILLING PASTES GENERAL PROCESSES OF COMPOUNDING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL SPRAYING OR ATOMISING IN GENERAL TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ARTCOLLECTIONS [XRACs] AND DIGESTS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS USE OF MATERIALS THEREFOR WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	The perfluorocarbon polymer powder coating composition consists essentially of spherical particles about 1 to 75 microns in diameter of an agglomerate of submicron particles of the perfluorocarbon polymer; the perfluorocarbon polymer preferably is a copolymer of tetrafluoroethylene and hexafluoropropylene, and the powder particles contain about 0.5 - 15 percent by weight of a nonionic surfactant such as isooctylphenoxypolyethoxy ethanol; this powder composition is particularly useful for electrostatic deposition on all types of metal substrates to form a durabl , tough, chemical-resistant release coating that can be applied to thicknesses of 3 mils and above; the powder coating composition is particularly useful for chemical vessels, appliances, industrial equipment, high temperature ovens and the like; a process for preparing the perfluorocarbon polymer coating composition is also disclosed.