公开(公告)号：US11701869B2

公开(公告)日：2023-07-18

申请号：US16762913

申请日：2018-11-13

Applicant: DuPont Teijin Films U.S. Limited Partnership

Inventor： David Turner ,  Stephen Sankey ,  Louise Taylor ,  Stephen Jones

IPC: B32B27/08 ,  B29C48/88 ,  B29C48/08 ,  B29C48/21 ,  B29C48/00 ,  B29C48/91 ,  B29C51/14 ,  B29C55/14 ,  B32B7/12 ,  B32B27/36 ,  G06F3/044 ,  B29C48/16 ,  B29K67/00 ,  B29K105/00 ,  B29L31/34

CPC classification number: B32B27/08 ,  B29C48/0018 ,  B29C48/0021 ,  B29C48/08 ,  B29C48/16 ,  B29C48/21 ,  B29C48/91 ,  B29C48/914 ,  B29C51/14 ,  B29C55/143 ,  B32B7/12 ,  B32B27/36 ,  G06F3/044 ,  B29K2067/00 ,  B29K2105/0085 ,  B29K2995/0053 ,  B29L2031/3475 ,  B32B2250/03 ,  B32B2250/244 ,  B32B2250/40 ,  B32B2255/10 ,  B32B2255/26 ,  B32B2270/00 ,  B32B2307/412 ,  B32B2307/518 ,  B32B2307/54 ,  B32B2307/584 ,  B32B2307/714 ,  B32B2307/734 ,  B32B2307/75 ,  B32B2457/208 ,  G06F2203/04103

Abstract: A thermoformable biaxially oriented coextruded polyester film comprising a copolyester base layer B, a first polyester outer layer A1 and a second polyester outer layer A2, wherein said outer layers are disposed on opposite surfaces of said base layer, and wherein: (i) said base layer B comprises a copolyester derived from terephthalic acid (TA) and a second aromatic dicarboxylic acid and one or more diol(s), wherein said second aromatic dicarboxylic acid is present in the copolyester in an amount of from about to 5 about 20 mol % of the acid fraction of the copolyester; (ii) the polyester of each of said outer layers A1 and A2 is selected from polyethylene terephthalate (PET); and (iii) the thickness of the base layer constitutes at least 90% of the total thickness of the coextruded multi-layer polyester film.

公开(公告)号：US20230278321A1

公开(公告)日：2023-09-07

申请号：US18318147

申请日：2023-05-16

Applicant: DuPont Teijin Films U.S. Limited Partnership

Inventor： David Turner ,  Stephen Sankey ,  Louise Taylor ,  Stephen Jones

IPC: B32B27/08 ,  B29C48/88 ,  B29C48/08 ,  B29C48/21 ,  B29C48/00 ,  B29C48/91 ,  B29C51/14 ,  B29C55/14 ,  B32B7/12 ,  B32B27/36 ,  G06F3/044 ,  B29C48/16

CPC classification number: B32B27/08 ,  B29C48/914 ,  B29C48/08 ,  B29C48/21 ,  B29C48/0018 ,  B29C48/91 ,  B29C51/14 ,  B29C55/143 ,  B32B7/12 ,  B32B27/36 ,  G06F3/044 ,  B29C48/16 ,  B29C48/0021 ,  B29K2067/00

Abstract: A thermoformable biaxially oriented coextruded polyester film comprising a copolyester base layer B, a first polyester outer layer A1 and a second polyester outer layer A2, wherein said outer layers are disposed on opposite surfaces of said base layer, and wherein:
(i) said base layer B comprises a copolyester derived from terephthalic acid (TA) and a second aromatic dicarboxylic acid and one or more diol(s), wherein said second aromatic dicarboxylic acid is present in the copolyester in an amount of from about 5 to about 20 mol % of the acid fraction of the copolyester;
(ii) the polyester of each of said outer layers A1 and A2 is selected from polyethylene terephthalate (PET); and
(iii) the thickness of the base layer constitutes at least 90% of the total thickness of the coextruded multi-layer polyester film.

公开(公告)号：US20220367973A1

公开(公告)日：2022-11-17

申请号：US17763387

申请日：2020-09-29

Applicant: DuPont Teijin Films U.S. Limited Partnership

Inventor： Stephen Sankey ,  Stephen Jones ,  Lucien Schosseler ,  Megan Todd ,  David Turner

IPC: H01M50/414 ,  H01M50/406

Abstract: Use of a copolyester film in the manufacture of a lithium-ion wet cell battery comprising an anode, a cathode and an electrolyte, wherein the copolyester film comprises a copolyester which comprises repeating units derived from a diol, a dicarboxylic acid and a poly(alkylene oxide)glycol.

公开(公告)号：US20240266546A1

公开(公告)日：2024-08-08

申请号：US18559550

申请日：2022-05-13

Applicant: DuPont Teijin Films U.S. Limited Partnership

Inventor： Stephen Sankey ,  Stephen Jones ,  Pedro Nunes ,  Lucien Schosseler

IPC: H01M4/66 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M4/661 ,  H01M4/0404 ,  H01M4/667 ,  H01M10/0525

Abstract: A current collector comprising a biaxially oriented polymeric substrate layer and a first metal layer on a side of the polymeric substrate layer, wherein the polymeric substrate layer exhibits positive thermal expansion in air at 200° C. in each of the transverse direction (TD) and machine direction (MD). The polymeric substrate layer has a thickness of no more than 12 pm and the first metal layer has a thickness of no more than 1000 nm.

公开(公告)号：US20230340219A1

公开(公告)日：2023-10-26

申请号：US18021415

申请日：2021-08-20

Applicant: Dupont Teijin Films U.S. Limited Partnership

Inventor： Stephen Sankey ,  David Turner ,  John Hobaugh ,  Megan Moaburn ,  Stephen K. Franzyshen ,  Stephen Jones

IPC: C08J7/04 ,  C08J7/052 ,  C08J5/18

CPC classification number: C08J7/052 ,  C08J5/18 ,  C08J7/042 ,  C08J2335/02

Abstract: A breathable, heat-sealable, composite film comprising substrate layer (A), a primer coating layer (B) disposed on the substrate layer, and a heat-sealable coating layer (C) disposed on the primer coating layer is provided, wherein (i) said substrate layer (A) comprises a polyester comprising monomeric units derived from one or more diol(s) and one or more dicarboxylic acid(s); (ii) said primer coating layer (B) comprises a cross-linked sulfopolyester; and (iii) said heat-sealable coating layer (C) comprises a first copolyester.

公开(公告)号：US20210024688A1

公开(公告)日：2021-01-28

申请号：US17040459

申请日：2019-03-28

Applicant: DuPont Teijin Films U.S. Limited Partnership

Inventor： Stephen Jones ,  Stephen Sankey ,  Lucien Schosseler ,  Megan Todd ,  David Turner

IPC: C08G63/68 ,  C08J5/22 ,  C08G63/672 ,  C08K5/098 ,  H01M10/0525 ,  H01M2/16 ,  H01M10/056

Abstract: An optionally oriented copolyester film comprising a copolyester which comprises repeating units derived from an aliphatic diol, an aromatic dicarboxylic acid and a poly(alkylene oxide), wherein the copolyester film further comprises lithium ions, and wherein the film has a thickness of no more than about 25 μm. The copolyester film is suitable for use a separator in a lithium-ion rechargeable battery.