Polyester molding composition useful for blow molding

A thermoplastic polyester molding composition (I) comprises (A) 80-100 wt.% of a polyalkylene arylate having a crystallization exotherm width at half height of no more than 5 deg C and (B) 0-20 wt.% further additives. Independent claims are included for (i) optical fiber sheathing and cable sheathin...

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Bibliographische Detailangaben
Hauptverfasser:	FISCH, HERBERT., 67157 WACHENHEIM, DE, BRAUNE, PETER., 55234 ERBES-BUEDESHEIM, DE, PELLKOFER, ERICH, 67112 MUTTERSTADT, DE, HEITZ, THOMAS., 67125 DANNSTADT-SCHAUERNHEIM, DE, SCHNEIDER, GEORG, 67069 LUDWIGSHAFEN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING BASIC ELECTRIC ELEMENTS CABLES CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONDUCTORS ELECTRICITY GENERAL PROCESSES OF COMPOUNDING INSULATORS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICS SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	A thermoplastic polyester molding composition (I) comprises (A) 80-100 wt.% of a polyalkylene arylate having a crystallization exotherm width at half height of no more than 5 deg C and (B) 0-20 wt.% further additives. Independent claims are included for (i) optical fiber sheathing and cable sheathing prepared from (I) and (ii) a process for the production of (I) by (a) esterification and/or ester exchange of an aromatic dicarboxylic acid, ester and/or ester forming derivative with a molar excess of a dihydroxy compound; (b) precondensing the resulting product followed by (c) polycondensation to a viscosity number of 158 ml/g whereby (a) and (b) are carried out in at least 2 temperature zones and optionally adding (B) before cooling of the melt before or after step (c).