US 11,840,829 B2
Pipe joint and piping structure
Daiki Hisashuku, Ritto (JP)
Assigned to SEKISUI CHEMICAL CO., LTD., Osaka (JP)
Appl. No. 17/439,975
Filed by SEKISUI CHEMICAL CO., LTD., Osaka (JP)
PCT Filed Mar. 19, 2020, PCT No. PCT/JP2020/012452
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/196318, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-054448 (JP), filed on Mar. 22, 2019; and application No. 2019-165664 (JP), filed on Sep. 11, 2019.
Prior Publication US 2022/0186479 A1, Jun. 16, 2022
Int. Cl. C08J 9/04 (2006.01); E03C 1/12 (2006.01); F16L 47/06 (2006.01); F16L 47/20 (2006.01); F16L 47/32 (2006.01); F16L 59/02 (2006.01); F16L 11/12 (2006.01); F16L 13/10 (2006.01); F16L 21/00 (2006.01); F16L 58/18 (2006.01); F16L 59/16 (2006.01); B32B 1/08 (2006.01); B32B 27/06 (2006.01); B32B 27/30 (2006.01); G01N 30/72 (2006.01); G01N 30/88 (2006.01)
CPC E03C 1/12 (2013.01) [B32B 1/08 (2013.01); B32B 27/065 (2013.01); B32B 27/302 (2013.01); C08J 9/04 (2013.01); F16L 11/125 (2013.01); F16L 13/103 (2013.01); F16L 21/00 (2013.01); F16L 47/06 (2013.01); F16L 47/20 (2013.01); F16L 47/32 (2013.01); F16L 58/185 (2013.01); F16L 59/02 (2013.01); F16L 59/163 (2013.01); B32B 2307/304 (2013.01); B32B 2355/00 (2013.01); B32B 2355/02 (2013.01); B32B 2597/00 (2013.01); G01N 30/72 (2013.01); G01N 30/88 (2013.01); Y10T 428/1376 (2015.01); Y10T 428/1393 (2015.01)] 10 Claims
OG exemplary drawing
 
6. A pipe joint comprising a tubular main body and a socket section integrally formed with the main body,
wherein the tubular main body has a flow path inside, and is formed of a resin comprising an acrylate polymer and a copolymer having
(i) a vinyl cyanide monomer unit,
(ii) a rubber component, and
(iii) an aromatic vinyl monomer unit,
wherein an amount of the vinyl cyanide monomer unit is 15% by mass or more to 45% by mass or less, based on the total mass of the resin,
wherein the main body has a foamed resin layer and a non-foamed resin layer covering the foamed resin layer,
wherein the amount of the rubber component in the foamed resin layer is 10% by mass or more and 45% by mass or less, based on a total mass of the resin contained in the foamed resin layer, as determined by pyrolysis-gas chromatography/mass spectrometry,
wherein the amount of the rubber component in the non-foamed resin layer is 10% by mass or more and 45% by mass or less, based on a total mass of the resin contained in the non-foamed resin layer, as determined by pyrolysis-gas chromatography/mass spectrometry,
wherein a ratio L/d of length L from a base end to an opening end of the socket section to a thickness d of the socket section at the opening end is 4.2 or more and 9.0 or less, and
wherein the main body has a thermal resistance of 0.04 K/W or more.