US 12,065,565 B2
Noise reducing filled polyester
Zhaokang Hu, Newburgh, IN (US); Robert Russell Gallucci, Mt. Vernon, IN (US); Carlos Pereira, Putnam Valley, NY (US); and Vasudev Shankar Nilajkar, Bangalore (IN)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
Appl. No. 17/049,405
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
PCT Filed May 9, 2019, PCT No. PCT/US2019/031515
§ 371(c)(1), (2) Date Oct. 21, 2020,
PCT Pub. No. WO2019/217675, PCT Pub. Date Nov. 14, 2019.
Prior Publication US 2021/0238410 A1, Aug. 5, 2021
Int. Cl. C08L 67/03 (2006.01); B32B 7/12 (2006.01); B32B 27/36 (2006.01); B60R 13/08 (2006.01); C08K 5/101 (2006.01); C08L 23/06 (2006.01); C08K 3/08 (2006.01); C08K 3/22 (2006.01); C08K 3/30 (2006.01); C08K 3/34 (2006.01); C08K 3/40 (2006.01); C08K 5/20 (2006.01)
CPC C08L 67/03 (2013.01) [B32B 7/12 (2013.01); B32B 27/36 (2013.01); B60R 13/08 (2013.01); C08K 5/101 (2013.01); C08L 23/06 (2013.01); B32B 2250/03 (2013.01); B32B 2307/102 (2013.01); B32B 2307/72 (2013.01); B32B 2307/732 (2013.01); C08K 2003/0887 (2013.01); C08K 2003/2241 (2013.01); C08K 2003/2272 (2013.01); C08K 2003/2296 (2013.01); C08K 2003/3036 (2013.01); C08K 2003/3045 (2013.01); C08K 3/34 (2013.01); C08K 3/40 (2013.01); C08K 5/20 (2013.01); C08L 2207/066 (2013.01)] 10 Claims
 
1. 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;
5 to 60 weight percent of a reinforcing filler; and
5 to 60 weight percent of an inorganic filler having a specific gravity of greater than 3 grams per cubic centimeter, as determined in accordance with ASTM D792, the inorganic filler comprising tungsten, iron, zinc oxide, zinc sulfide, titanium dioxide, iron oxide, or a combination thereof, wherein the inorganic filler further comprises barium sulfate; and
wherein a molded article comprising the polyester composition has a sound transmission loss of greater than 30 decibels, as determined at 1,250 Hertz according to ASTM E1050 using a molded disc with a diameter of 100 mm and a thickness of 3.2 mm.