US 12,391,826 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)
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom (NL)
Filed on May 9, 2024, as Appl. No. 18/659,218.
Application 18/659,218 is a division of application No. 17/049,405, granted, now 12,065,565, previously published as PCT/US2019/031515, filed on May 9, 2019.
Claims priority of provisional application 62/670,340, filed on May 11, 2018.
Prior Publication US 2024/0294747 A1, Sep. 5, 2024
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)] 15 Claims
 
1. A multi-layer composite, comprising:
a first layer comprising a first polyester composition; and
a second layer comprising a second polyester composition,
wherein the first polyester composition and the second polyester composition are each the same or different polyester composition comprising, based on the total weight of the composite,
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,
wherein a molded article comprising the composite 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,
wherein the first polyester composition and the second polyester composition each independently has a specific gravity of 1.5 to 3.5 grams per cubic centimeter, as determined in accordance with ASTM D792.