公开(公告)号：US20250011488A1

公开(公告)日：2025-01-09

申请号：US18888386

申请日：2024-09-18

Applicant: DAIKIN INDUSTRIES, LTD.

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

IPC: C08F214/26

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 4.4 to 5.28 by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 11.0 to 16.0 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230399440A1

公开(公告)日：2023-12-14

申请号：US18452892

申请日：2023-08-21

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu ISAKA ,  Yukari Yamamoto ,  Yumi Zenke

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 content of hexafluoropropylene unit is 7.6 to 10.3% by mass with respect to the whole of the monomer units; the content of perfluoro(propyl vinyl ether) unit is 1.3 to 2.4% by mass with respect to the whole of the monomer units; and the melt flow rate at 372° C. is 4.5 to 9.5 g/10 min.

公开(公告)号：US20230295356A1

公开(公告)日：2023-09-21

申请号：US18191412

申请日：2023-03-28

Applicant: DAIKIN INDUSTRIES, LTD.

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

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

CPC classification number: C08F214/262 ,  C09D127/18 ,  H01B3/445

Abstract: A copolymer containing tetrafluoroethylene unit and a fluoro(alkyl vinyl ether) unit, and having a content of the fluoro(alkyl vinyl ether) unit of 2.0 to 2.8% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 5 to 23 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms.

公开(公告)号：US20230235159A1

公开(公告)日：2023-07-27

申请号：US18192053

申请日：2023-03-29

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Tadaharu Isaka ,  Yukari Yamamoto ,  Yumi Zenke ,  Hayato Tsuda ,  Keizou Shiotsuki

IPC: C08L27/18 ,  H01B3/44

CPC classification number: C08L27/18 ,  H01B3/445 ,  C08L2205/025

Abstract: A copolymer containing tetrafluoroethylene unit and a perfluoro(propyl vinyl ether) unit, wherein the copolymer has a content of the perfluoro(propyl vinyl ether) unit of 2.8 to 3.5% by mass with respect to the whole of the monomer units, a melt flow rate of 31 to 38 g/10 min, and the number of functional groups of 50 or less per 106 main-chain carbon atoms, and the number of functional groups of —CF═CF2, —CF2H, —COF, —COOH, —COOCH3, —CONH2 and —CH2OH of 50 or less per 106 main-chain carbon atoms. Also disclosed is an injection molded article, a member to be compressed and a coated electric wire including the copolymer.

公开(公告)号：US09475744B2

公开(公告)日：2016-10-25

申请号：US14654238

申请日：2014-01-20

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yumi Zenke ,  Tadaharu Isaka ,  Ryouichi Fukagawa ,  Takeshi Shimono

IPC: C07C41/40 ,  C08F14/20 ,  C08F14/22 ,  C08F14/18 ,  C08F14/26 ,  C08F14/28 ,  C07C41/34 ,  C08F6/00 ,  C08F6/16 ,  C08F6/24 ,  C08F6/28 ,  C08F214/26 ,  C08F214/28

CPC classification number: C07C41/40 ,  C07C41/34 ,  C08F6/008 ,  C08F6/16 ,  C08F6/24 ,  C08F6/28 ,  C08F14/18 ,  C08F14/185 ,  C08F14/20 ,  C08F14/22 ,  C08F14/26 ,  C08F14/28 ,  C08F214/262 ,  C08F214/282 ,  C08L27/12 ,  C07C43/12

Abstract: An object of the present invention is to provide a method for recovering a fluorine-containing ether capable of recovering a fluorine-containing ether used for producing a fluoropolymer, in higher recovery yield and in a shorter time. The present invention relates to a method for recovering a fluorine-containing ether, including the steps of: producing a wet fluoropolymer by suspension polymerization, solution polymerization, or bulk polymerization in the presence of at least a specific fluorine-containing ether; vaporizing and discharging vaporizable substances including the fluorine-containing ether by heating the wet fluoropolymer in a container; and transferring the vaporizable substances in the vaporized state to a cooling means to cool the vaporizable substances.

Abstract translation: 本发明的目的是提供一种能够回收用于制备含氟聚合物的含氟醚的含氟醚的回收率高的方法。 本发明涉及一种回收含氟醚的方法，包括以下步骤：在至少一种特定含氟醚存在下，通过悬浮聚合，溶液聚合或本体聚合制备湿氟聚合物; 通过加热容器中的含氟聚合物来蒸发和排出包括含氟醚的可蒸发物质; 并将蒸发状态的可蒸发物质转移到冷却装置以冷却可蒸发物质。

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：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：US20230391913A1

公开(公告)日：2023-12-07

申请号：US18449873

申请日：2023-08-15

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 10.5 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 2.4% by mass with respect to the whole of the monomer units, a melt flow rate at 372° C. of 28.0 to 40.0 g/10 min, and a total number of —CF2H, carbonyl group-containing terminal groups, —CF═CF2 and —CH2OH of 25 or less per 106 main-chain carbon atoms.