AQUEOUS DISPERSIONS OF FLUOROPOLYMERS WITH PARTICLES OF DIFFERENT SIZE

FIELD: polymers. SUBSTANCE: invention relates to dispersion prepared by emulsion polymerization of fluoropolymers with different size of particles. Dispersion contains at least one fluoropolymer A representing inprocessible polytetrafluoroethylene or its copolymers from melt with average size of par...

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Bibliographische Detailangaben
Hauptverfasser:	GROSSMANN GERD, BLEDEL' KHERMANN, LER GERNOT
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CORRECTING FLUIDS DYES FILLING PASTES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR GENERAL PROCESSES OF COMPOUNDING INKS LAUNDERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING POLISHES TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF TEXTILES OR THE LIKE TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS USE OF MATERIALS THEREFOR WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL WOODSTAINS WORKING-UP
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Beschreibung
Zusammenfassung:	FIELD: polymers. SUBSTANCE: invention relates to dispersion prepared by emulsion polymerization of fluoropolymers with different size of particles. Dispersion contains at least one fluoropolymer A representing inprocessible polytetrafluoroethylene or its copolymers from melt with average size of particles at least 200 nm and at least one fluoropolymer B with average size of particles 100 nm, not above. Component B is thermoplast based on copolymers of polytetrafluoroethylene and the combined dispersion shows nonmodal distribution of diameter of particles. Invention relates also to method for preparing dispersion. Invention allows preparing coatings with less porosity and greater breakdown dielectric strength. Cohesiveness with substrate and first of all with porous surfaces and articles is improved also. EFFECT: valuable properties of dispersion. 16 cl, 2 ex