Polyester composition comprising polybutylene terephthalate resin

• Main Authors: WERUMEUS BUNING GERARD H, NELISSEN HENDRIKUS L, LEEMANS LUC E. F, GABRIELSE WOUTER, COENEN ERIC J. H. E, HEYNDERICKX ROBERT A
• Format: Patent
• Language: English
• Published: 17.06.2008
• Subjects: BLASTING; CHEMISTRY; COMPOSITIONS BASED THEREON; FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HEATING; LIGHTING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; MECHANICAL ENGINEERING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WEAPONS

Polyester compositions and methods to prepare and use such compositions are provided. The polyester compositions include a polybutylene terephthalate resin (PBT) and at least one additive, and have a cyclic dimer content of less than 0.35 wt. % relative to the weight of the PBT. Molded parts prepared from such polyester compositions, and mirror optic systems such as headlights for motor vehicles or garden reflector lights which include the molded parts are also described.