公开(公告)号：US20230022910A1

公开(公告)日：2023-01-26

申请号：US17791019

申请日：2020-12-14

Applicant: NOK CORPORATION

Inventor： Takahiro HIGUMA ,  Hirokazu MAEKAWA

IPC: C08F114/26 ,  C08K3/04 ,  C08K7/06 ,  C08F214/22 ,  C08F214/26

Abstract: A fluororubber composition comprising 3 to 20 parts by weight of carbon fibers and 1 to 8 parts by weight of carbon nanotubes based on 100 parts by weight of fluororubber. The crosslinked molded article obtained from the fluororubber composition has excellent effects of not only imparting oil film retention, but also improving the material strength of fluororubber due to the combined use of carbon nanotubes, which have high reinforcing properties. Further, the fluororubber composition can give a fluororubber crosslinked product excellent in abrasion resistance and pressure resistance.

公开(公告)号：US20230015548A1

公开(公告)日：2023-01-19

申请号：US17784819

申请日：2020-12-17

Applicant: THE CHEMOURS COMPANY FC, LLC

Inventor： PHAN LINH TANG ,  PETER A. MORKEN ,  ERIC CHAUVIGNE ,  LEE GRANT SPRAGUE ,  REBECCA JILL DOOLEY ,  BENJAMIN WEAVER MESSMORE

IPC: C08F214/26 ,  C08F214/22 ,  C08K5/14 ,  C08L27/16

Abstract: An elastomeric fluoropolymer includes the following monomer units: about 45 mol % to about 65 mol % —CF2—CH2—; about 8 mol % to about 30 mol % —CF2—CF2—; about 4.5 mol % to about 25 mol % —CF2—CF(O—CF3)—; and about 6 mol % to about 20 mol % —CF2—CF(O—CF2—CF2—O—(CF2—O)n—CF3)—, where n is 1 or 2. In some embodiments, a composition includes an elastomeric fluoropolymer and at least one additive. In some embodiments, a composition includes a first elastomeric fluoropolymer and a second elastomeric fluoropolymer blended with the first elastomeric fluoropolymer. The first elastomeric fluoropolymer includes the following monomer units: about 45 mol % to about 65 mol % —CF2—CH2—; about 8 mol % to about 30 mol % —CF2—CF2—; about 4.5 mol % to about 25 mol % —CF2—CF(O—CF3)—; and about 6 mol % to about 20 mol % —CF2—CF(O—CF2—CF2—O—(CF2—O)n—CF3)—, where n is 1 or 2.

公开(公告)号：US11542658B2

公开(公告)日：2023-01-03

申请号：US16630600

申请日：2018-07-16

Applicant: Arkema Inc.

Inventor： Gregory Scott O'Brien ,  Ramin Amin-Sanayei ,  Saeid Zerafati ,  James T. Goldbach

IPC: C08L27/16 ,  C08F214/28 ,  C08K7/14 ,  C08K9/08 ,  C08K7/06 ,  D06M15/256 ,  C08F214/22 ,  C08F220/06 ,  C08F220/18 ,  D06M15/263 ,  C08F2/38 ,  D06M101/40

Abstract: The invention relates to fluoropolymer composites having a fluoropolymer matrix containing a functionalized fluoropolymer composition, and reinforced with fibers. The fibers can be chopped fibers, long fibers, or a mixture thereof, and the fluoropolymer matrix preferably is based on polyvinylidene fluoride. Any type of fibers, sized or unsized may be used with the functionalized fluoropolymer matrix composition to form the fluoropolymer composite.

公开(公告)号：US20220416250A1

公开(公告)日：2022-12-29

申请号：US17896199

申请日：2022-08-26

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Takashi Iguchi ,  Takahiro Kitahara ,  Ryouichi Yano ,  Kazuya Asano ,  Kanako Arai

IPC: H01M4/62 ,  C08F214/22 ,  H01M4/525 ,  H01M4/505 ,  H01M10/0525

Abstract: Provided is a polyvinylidene fluoride comprising: vinylidene fluoride unit; and a pentenoic acid unit represented by formula (1): CH2═CH— (CH)2—COOY wherein Y represents at least one selected from the group consisting of an inorganic cation and an organic cation, a content of vinylidene fluoride unit is 95.0 to 99.99 mol % based on all monomer units of the polyvinylidene fluoride, and a content of the pentenoic acid unit is 0.01 to 5.0 mol % based on all monomer units of the polyvinylidene fluoride.

公开(公告)号：US11469366B2

公开(公告)日：2022-10-11

申请号：US16481093

申请日：2018-01-10

Applicant: IDEAL STAR INC.

Inventor： Kenji Omote ,  Tsurugi Samezawa ,  Hiroji Ohigashi

IPC: H01L41/193 ,  C08F214/22 ,  H01L41/08 ,  H01L41/257 ,  H01L41/45

Abstract: An object of the present invention is to improve the piezoelectricity of a PVT having the VDF ratio of 82 to 90% represented by a copolymer, in which copolymerization of vinylidene fluoride VDF and trifluoroethylene TrFe is 85 versus 15 (this is written as PVT85/15, and which is excellent in resistance to deformation, and heat resistance, etc. And therefore, it is also to obtain a piezoelectric film having piezoelectricity exceeding a PVT of less than 82 mol % of VDF represented by a PVT75/25, which conventionally shows the highest piezoelectricity, and a method of producing the same.
A piezoelectric film is made of a mixture of two kinds (for example, a first copolymer is PVT85/15 and a second copolymer is PVT75/25) having different polymerization ratios of vinylidene fluoride VDF and trifluoroethylene TrFE.

公开(公告)号：US20220298278A1

公开(公告)日：2022-09-22

申请号：US17638105

申请日：2020-08-17

Applicant: Zhonghao Chenguang Research Institute of Chemical Industry Co., Led.

Inventor： Jinlong Yu ,  Bo Liu ,  Ziqiang Zhong ,  Tingjian Zhang ,  Zhongliang Xiao

IPC: C08F214/22 ,  C08F4/30 ,  C08F4/34

Abstract: The present invention provides a method for controlling Mooney viscosity of peroxide-cured fluororubber. The method comprises: adding an initiator solution in a continuous supplementary manner during the emulsion polymerization process of a peroxide-cured fluororubber until 5 to 10 minutes before the end of the polymerization reaction; wherein the amount of the initiator solution added initially is 0.1% to 0.5% of the total amount of the polymerization monomer dry materials, and the amount of the initiator solution continuously supplemented is 0.1% to 2% of the total amount of the polymerization monomer dry materials, based on the initiator. The present invention effectively controls the Mooney viscosity value of the peroxide-cured fluororubber within the desired range with small fluctuations by controlling the amount and the manner of addition of the initiator, thereby obtaining a peroxide-cured fluororubber with stable and controllable quality. Moreover, the present invention does not need to add a chain transfer agent, which reduces the amount of additives in the polymerization process, and meanwhile improves the reaction activity of the polymerization system, effectively shortens the time for polymerization, and is beneficial to industrialized production.

公开(公告)号：US11380935B2

公开(公告)日：2022-07-05

申请号：US17059108

申请日：2019-02-21

Applicant: Kureha Corporation

Inventor： Yoshiyuki Nagasawa ,  Aya Shike

IPC: H01M10/0565 ,  H01M50/449 ,  C08K5/02 ,  C08L27/16 ,  C08L27/20 ,  H01M10/0525 ,  C08F214/22 ,  C08F214/28 ,  H01M50/426 ,  H01M4/04 ,  H01M4/62

Abstract: A resin composition for a non-aqueous electrolyte secondary battery that includes a vinylidene fluoride copolymer having a constituent unit derived from vinylidene fluoride and a constituent unit derived from a fluorine-containing alkyl vinyl compound. A melting point, measured in accordance with ASTM D3418, of the vinylidene fluoride copolymer is from 105° C. to 125° C., and a mass fraction Wa of the constituent unit derived from the fluorine-containing alkyl vinyl compound in the vinylidene fluoride copolymer, a degree of crystallinity DC of the vinylidene fluoride copolymer, and a degree of amorphicity DA of the vinylidene fluoride copolymer satisfy Equation (1) below: 4.7≤Wa×(DC/DA)≤14  (1).

公开(公告)号：US20220158075A1

公开(公告)日：2022-05-19

申请号：US17594017

申请日：2020-03-25

Applicant: SABIC Global Technologies B.V.

Inventor： Jibran KHALIQ ,  Sybrand VAN DER ZWAAG ,  Pim GROEN ,  Jesus Alfonso Caraveo FRESCAS ,  Soma GUHATHAKURTA ,  Suresh VELATE

IPC: H01L41/18 ,  C08K3/22 ,  C08F214/22 ,  C08F214/18 ,  C08J5/18 ,  C08J3/21 ,  H01L41/257 ,  H01L41/37

Abstract: Lead-free piezoelectric composites and methods of making and uses thereof are described. The lead-free piezoelectric composites have high flexibility and high piezoelectric properties.

公开(公告)号：US11326008B2

公开(公告)日：2022-05-10

申请号：US16649686

申请日：2018-09-21

Applicant: Arkema France

Inventor： Samuel Devisme ,  Andrew Kahn ,  Mathieu Fuentes-Exposito ,  Timothy McKenna ,  Franck D'Agosto ,  Muriel Lansalot ,  Anthony Bonnet

IPC: C08F214/22 ,  C08F2/22 ,  C08F2/38 ,  C08K5/14 ,  C08K5/36 ,  C08L53/00 ,  C09D127/16

Abstract: The present invention relates to a process for producing a stable fluorinated latex by emulsion polymerization in the absence of fluorinated surfactant, stabilized by an amphiphilic block copolymer formed in situ. The invention also concerns the aqueous dispersion comprising the fluorinated polymer chains and the amphiphilic block copolymers, obtained by this process.

公开(公告)号：US11306167B2

公开(公告)日：2022-04-19

申请号：US16861276

申请日：2020-04-29

Applicant: AGC Inc.

Inventor： Satoko Yasuda ,  Keisuke Yagi ,  Takehiro Kose ,  Yukiko Hattori ,  Toshikazu Yoneda

IPC: C08F214/26 ,  C08F214/22 ,  C08F214/28 ,  C08F220/06 ,  C08F283/00

Abstract: To provide a fluorinated elastic copolymer excellent in adhesion, processability, mechanical properties, heat resistance and chemical resistance.
A fluorinated elastic copolymer having units based on a monomer (a), units based on a monomer (b) and optionally units based on a monomer (c), which has an iodine atom bonded to a terminal of a molecular chain and the unit based on the monomer (b) adjacent to the iodine atom, and which has a proportion of the units based on the monomer (b) of from 0.09 to 2.0 mol % to all units. Monomer (a): monomer selected from the group consisting of tetrafluoroethylene, hexafluoropropylene, vinylidene fluoride, chlorotrifluoroethylene, a perfluoro(alkyl vinyl ether) and 2,3,3,3-tetrafluoropropene; monomer (b): a monomer having at least one type of functional group selected from the group consisting of an epoxy group, a hydroxy group, a carbonyl group-containing group and an isocyanate group; monomer (c): a monomer selected from the group consisting of ethylene and propylene.