公开(公告)号：US20250011506A1

公开(公告)日：2025-01-09

申请号：US18894314

申请日：2024-09-24

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

IPC: C08F214/28 ,  H01B3/44

Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 10.3 to 11.6% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 1.4 to 2.68 by mass with respect to the whole of the monomer units, a melt flow rate at 372°° C. of 24.1 to 39.9 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 120 or less.

公开(公告)号：US20250011491A1

公开(公告)日：2025-01-09

申请号：US18888922

申请日：2024-09-18

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

IPC: C08F214/26 ,  C09D127/18 ,  H01B3/44

Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 8.0 to 9.4% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 0.6 to 1.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 6.8 to 9.9 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.

公开(公告)号：US20250011487A1

公开(公告)日：2025-01-09

申请号：US18888343

申请日：2024-09-18

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi Zenke ,  Yukari Yamamoto

IPC: C08F214/26 ,  H01B3/44

Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 11.4 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 0.9 to 1.78 by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 4.0 to 13.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 90 or less.

公开(公告)号：US20250002623A1

公开(公告)日：2025-01-02

申请号：US18885900

申请日：2024-09-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO

IPC: C08F214/26 ,  H01B3/44

Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and perfluoro (propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 9.4 to 11.4% by mass with respect to the whole of the monomer units, a content of perfluoro (propyl vinyl ether) unit of 1.2 to 2.38 by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 17.0 to 24.0 g/10 min, and a total number of a carbonyl group-containing terminal group, —CF═CF2 and —CH2OH per 106 main-chain carbon atoms of 120 or less.

公开(公告)号：US20230406975A1

公开(公告)日：2023-12-21

申请号：US18449778

申请日：2023-08-15

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi Zenke ,  Yukari Yamamoto ,  Hayato Tsuda

IPC: C08F214/26 ,  H01B3/44

CPC classification number: C08F214/262 ,  H01B3/445

Abstract: There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 4.9 to 5.7% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 45.0 to 55.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230399442A1

公开(公告)日：2023-12-14

申请号：US18453487

申请日：2023-08-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi Zenke ,  Yukari Yamamoto

IPC: C08F214/26 ,  C08F214/28 ,  H01B3/44

CPC classification number: C08F214/262 ,  C08F214/282 ,  H01B3/445

Abstract: There is provided a fluorine-containing copolymer containing tetrafluoroethylene unit, hexafluoropropylene unit, and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of hexafluoropropylene unit of 10.3 to 12.2% by mass with respect to the whole of the monomer units, a content of perfluoro(propyl vinyl ether) unit of 1.2 to 1.6% by mass with respect to the whole of the monomer units, and a melt flow rate at 372° C. of 13.0 to 17.0 g/10 min.

公开(公告)号：US20230399431A1

公开(公告)日：2023-12-14

申请号：US18451455

申请日：2023-08-17

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi Zenke ,  Yukari Yamamoto ,  Hayato Tsuda ,  Tatsuya Higuchi

IPC: C08F214/26 ,  H01B3/44 ,  F16L9/127

CPC classification number: C08F214/262 ,  H01B3/445 ,  F16L9/127

Abstract: There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 2.8 to 3.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 2.8 to 4.0 g/10 min, and the number of functional groups of 20 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230392737A1

公开(公告)日：2023-12-07

申请号：US18453690

申请日：2023-08-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Hayato TSUDA ,  Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO ,  Yasuyuki YAMAGUCHI ,  Hiroyuki HAMADA

IPC: F16L41/02 ,  B29C45/14 ,  B29C45/26 ,  B29C45/72 ,  B29D23/00 ,  C08F214/26

CPC classification number: F16L41/021 ,  B29C45/14065 ,  B29C45/261 ,  B29C45/7207 ,  B29D23/001 ,  C08F214/262 ,  B29C2045/363

Abstract: Provided is a pipe joint including a cylindrical hollow, wherein the wall thickness of a part having the largest wall thickness of the pipe joint is 2 to 7 mm, the ratio of the length of the hollow in the axial direction (L) to the diameter of the hollow (D), (L/D), is 5 or less, the pipe joint contains a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 2.8 to 6.0% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 4.0 g/10 min or higher and lower than 11.0 g/10 min, and the number of functional groups of the copolymer is 50 or less.

公开(公告)号：US20230391932A1

公开(公告)日：2023-12-07

申请号：US18453709

申请日：2023-08-22

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yumi ZENKE ,  Yukari YAMAMOTO ,  Hayato TSUDA

IPC: C08F214/26 ,  H01B3/44 ,  F16L9/127

CPC classification number: C08F214/262 ,  H01B3/445 ,  F16L9/127

Abstract: There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 3.9 to 5.5% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 2.8 to 4.0 g/10 min, and the number of functional groups of 20 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230391927A1

公开(公告)日：2023-12-07

申请号：US18452107

申请日：2023-08-18

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA

IPC: C08F214/26 ,  C09D127/16 ,  H01B3/44

CPC classification number: C08F214/262 ,  C08F2800/20 ,  H01B3/443 ,  C09D127/16

Abstract: There is provided a copolymer containing tetrafluoroethylene unit and perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of perfluoro(propyl vinyl ether) unit of 3.5 to 4.2% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of 34.0 to 42.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.