Polyester raw material, moulding mass produced therefrom, especially a foil, and use of the moulding mass

• Main Authors: DENNELER, WERNER, SEIFRIED, WALTER, ENGEL, DIETER
• Format: Patent
• Language: English; French; German
• Published: 21.11.1984
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BASIC ELECTRIC ELEMENTS; CABLES; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONDUCTORS; DEVICES OR ARRANGEMENTS RELATED TO TYRES; ELECTRICITY; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULARARTICLES; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; INFORMATION STORAGE; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER; INSULATORS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; NATURAL OR ARTIFICIAL THREADS OR FIBRES; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICS; REPAIRING, OR CONNECTING VALVES TO, INFLATABLE ELASTIC BODIESIN GENERAL; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; SPINNING; TEXTILES; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; TYRE CHANGING OR REPAIRING; TYRE INFLATION; VEHICLE TYRES; VEHICLES IN GENERAL; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

Die Erfindung betrifft einen Polyesterrohstoff, der feinteilige, im wesentlichen homodispers verteilte Polymerteilchen enthält, wobei die Polymerteilchen durch ein Emulsionspolymerisationsverfahren hergestellt und vernetzt sind. Die Polymerteilchen weisen eine sehr enge Korngrößenverteilung auf und werden in den Polyester bei dessen Synthese eingebaut. Die Erfindung betrifft weiterhin Folien, insbesondere in gestreckter Form, die aus dem Polyesterrohstoff heregestellt sind und die auch als Grundfolie für die Herstellung von Verbundfolien Verwendung finden können. Weiterhin dient der erfindungsgemäße Rohstoff zur Herstellung oder unter Zusatz zu anderen Polymeren zur Produktion von Fasern und Fäden. Die Folien werden vorzugsweise als Grundlage für magnetische Aufzeichnungsträger oder für Kondensatoren, die Fasern oder Fäden für die Herstellung von Reifencord verwendet. This invention pertains to a polyester composition containing finely divided polymer particles in a substantially homodisperse distribution. The polymer particles are prepared in an emulsion-polymerization process and are crosslinked. The polymer particles exhibit an extremely narrow grain-size distribution and are incorporated into the polyester during the synthesis thereof. The invention also relates to films, particularly stretched films, which are produced from the polyester composition and which can also be used as base films for the production of composite films. It is additionally also possible to produce filaments and fibers from the composition according to the invention or with the addition of this composition to other polymers. The films are preferably used as bases for magnetic recording elements or for capacitors, and fiber or filaments are employed in the production of tire cord.