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：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：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：US20230391922A1

公开(公告)日：2023-12-07

申请号：US18450792

申请日：2023-08-16

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 comprising tetrafluoroethylene unit, hexafluoropropylene unit, and a perfluoro(ethyl vinyl ether) unit, wherein the copolymer has a content of the hexafluoropropylene unit of 9.5 to 11.6% by mass with respect to the whole of the monomer units, a content of the perfluoro(ethyl vinyl ether) unit of 1.2 to 2.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 19.0 to 28.0 g/10 min, and a total number of —CF2H, carbonyl group-containing terminal groups, —CF═CF2 and —CH2OH of 90 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230391921A1

公开(公告)日：2023-12-07

申请号：US18450762

申请日：2023-08-16

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yukari YAMAMOTO ,  Yumi ZENKE

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

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

Abstract: There is provided a fluorine-containing copolymer comprising tetrafluoroethylene unit, hexafluoropropylene unit and a fluoro(alkyl vinyl ether) unit, wherein the copolymer has a content of the hexafluoropropylene unit of 10.4 to 12.0% by mass with respect to the whole of the monomer units, a content of the fluoro(alkyl vinyl ether) unit of 1.3 to 2.9% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 0.7 to 5.0 g/10 min, and the number of functional groups of 70 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230390978A1

公开(公告)日：2023-12-07

申请号：US18450590

申请日：2023-08-16

Applicant: DAIKIN INDUSTRIES,LTD.

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

IPC: B29C45/00 ,  B29C45/78

CPC classification number: B29C45/0001 ,  B29C45/78 ,  B29K2027/18

Abstract: There is provided an injection molded article obtained by injection molding a copolymer using a mold provided with a gate, wherein the copolymer contains tetrafluoroethylene (TFE) unit and a fluoro(alkyl vinyl ether) (FAVE) unit, the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 5.2 to 6.3% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 19.0 to 35.0 g/10 min, the number of functional groups of the copolymer is 50 or less per 106 main-chain carbon atoms, and the injection molded article has a gate section corresponding to the gate of the mold, and the ratio of the maximum flow length (a) from the gate section of the injection molded article to the average value (b) of the product thickness on the maximum flow length, ((a)/(b)), is 80 to 200.

公开(公告)号：US20230390977A1

公开(公告)日：2023-12-07

申请号：US18450568

申请日：2023-08-16

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: B29C45/00 ,  B29C45/47

CPC classification number: B29C45/0001 ,  B29C45/47 ,  B29K2027/18

Abstract: Provided is an injection molded article containing a copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, wherein the content of the fluoro(alkyl vinyl ether) unit of the copolymer is 3.9 to 4.8% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of the copolymer is 11.0 to 19.0 g/10 min, the melting point of the copolymer is 296 to 305° C., and the amount of fluorine ions dissolving out from the injection molded article into water is 7,500 μg/m2 or lower.

公开(公告)号：US20230383033A1

公开(公告)日：2023-11-30

申请号：US18449845

申请日：2023-08-15

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: C08F214/26

CPC classification number: C08F214/262

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 3.2 to 3.7% by mass with respect to the whole of the monomer units, the melt flow rate at 372° C. of 22.0 to 27.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.