	US 12,071,541 B2
	Thermoplastic resin composition for refrigerant transporting piping, and method for producing same
Shusaku Tomoi, Hiratsuka (JP)
Assigned to THE YOKOHAMA RUBBER CO., LTD., Kanagawa (JP)
Appl. No. 17/417,472
Filed by THE YOKOHAMA RUBBER CO., LTD., Tokyo (JP)
PCT Filed Dec. 17, 2019, PCT No. PCT/JP2019/049476 § 371(c)(1), (2) Date Jun. 23, 2021, PCT Pub. No. WO2020/137712, PCT Pub. Date Jul. 2, 2020.
Claims priority of application No. 2018-243519 (JP), filed on Dec. 26, 2018.
Prior Publication US 2022/0073740 A1, Mar. 10, 2022
Int. Cl. C08L 77/02 (2006.01); C08G 63/183 (2006.01); C08G 63/189 (2006.01); C08J 3/22 (2006.01); C08J 3/24 (2006.01); C08K 3/22 (2006.01); C08K 5/098 (2006.01); C08K 5/18 (2006.01); C08K 5/3437 (2006.01); C08K 5/3492 (2006.01); C08L 23/22 (2006.01); F16L 11/04 (2006.01)

CPC C08L 77/02 (2013.01) [C08G 63/183 (2013.01); C08G 63/189 (2013.01); C08J 3/22 (2013.01); C08J 3/24 (2013.01); C08K 3/22 (2013.01); C08K 5/098 (2013.01); C08K 5/18 (2013.01); C08K 5/3437 (2013.01); C08K 5/34924 (2013.01); C08L 23/22 (2013.01); F16L 11/04 (2013.01); C08K 2003/222 (2013.01); C08K 2003/2296 (2013.01); C08L 2201/14 (2013.01); C08L 2203/18 (2013.01); C08L 2205/22 (2013.01); C08L 2312/00 (2013.01)]

18 Claims

1. A thermoplastic resin composition for refrigerant transporting piping, wherein the thermoplastic resin composition comprises a matrix containing a thermoplastic resin, and a rubber-containing domain dispersed in the matrix; the thermoplastic resin has a melting point of not less than 150° C.; the rubber is a butyl-based rubber or olefin-based rubber; the matrix contains 5% to 30% by weight of a viscosity stabilizer; the thermoplastic resin composition comprises at least one selected from the group consisting of a phenylenediamine-based antioxidant, quinoline-based antioxidant, and trihydric alcohol having a triazine skeleton, and a processing aid; and at least part of the rubber is cross-linked.