Noise reducing filled polyester

A polyester composition comprising, based on the total weight of the polyester composition, a first polyester and a second polyester, wherein a weight ratio of the first polyester to the second polyester is 80:20 to 20:80, preferably 60:40 to 40:60; 5 to 60 weight percent (wt %), preferably 5 to 50...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Hu, Zhaokang, Gallucci, Robert Russell, Pereira, Carlos, Nilajkar, Vasudev Shankar
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR
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Beschreibung
Zusammenfassung:	A polyester composition comprising, based on the total weight of the polyester composition, a first polyester and a second polyester, wherein a weight ratio of the first polyester to the second polyester is 80:20 to 20:80, preferably 60:40 to 40:60; 5 to 60 weight percent (wt %), preferably 5 to 50 wt % of a reinforcing filler; and 5 to 60 wt %, preferably 10 to 50 wt %, more preferably 20 to 50 wt % of an inorganic filler having a specific gravity of greater than 3 grams per cubic centimeter, as determined in accordance with ASTM D792, wherein a molded article comprising the polyester composition has a sound transmission loss of greater than 30 dB, preferably 35 to 50 dB, more preferably 36 to 45 dB, as determined at 1,250 Hz according to ASTM E1050 using a molded disc with a diameter of 100 mm and a thickness of 3.2 mm.