公开(公告)号：US11136423B2

公开(公告)日：2021-10-05

申请号：US15915727

申请日：2018-03-08

Applicant: AGC Inc. ,  AGC CHEMICALS EUROPE, LIMITED

Inventor： Shigeki Kobayashi ,  Ariana Claudia Morgovan-Ene ,  Anthony Eugene Wade

IPC: C08F214/26 ,  B29C48/00 ,  B29C48/09 ,  C08F2/26 ,  B29C48/32 ,  B29C48/95 ,  B29C48/06 ,  C08J3/16 ,  F16L11/04 ,  B29K27/18 ,  B29K105/00

Abstract: To provide a modified polytetrafluoroethylene which is excellent in the moldability by paste extrusion and the mechanical property of the molded article. A modified polytetrafluoroethylene fine powder which is a fine powder of a non-melt-moldable modified polytetrafluoroethylene, characterized in that the modified polytetrafluoroethylene comprises units derived from tetrafluoroethylene, units derived from a perfluoroalkyl vinyl ether represented by CF2═CFO—CnF2n+1 (wherein n is an integer of from 1 to 6), and units derived from a perfluoroalkylethylene represented by CH2═CH—CmF2m+1 (wherein m is an integer of from 3 to 6), and that the content of the units derived from the perfluoroalkyl vinyl ether is from 0.1 to 0.25 mass % and the content of the units derived from a perfluoroalkylethylene is from 0.001 to 0.1 mass %, based on all monomer units in the modified polytetrafluoroethylene.

公开(公告)号：US11104787B2

公开(公告)日：2021-08-31

申请号：US16661064

申请日：2019-10-23

Applicant: AGC INC. ,  AGC Chemicals Europe, Limited

Inventor： Shigeki Kobayashi ,  Masahiro Takazawa ,  Ariana Claudia Morgovan-Ene ,  Anthony Eugene Wade ,  Diane Caine

IPC: C08L27/18 ,  C09D7/20 ,  C09D7/45 ,  C08F214/26 ,  C08J5/18 ,  C08J5/24 ,  C09D127/18

Abstract: To provide a PTFE aqueous dispersion which is excellent in mechanical stability, while being not susceptible to foaming. A polytetrafluoroethylene aqueous dispersion which is characterized by containing from 15 to 70 mass % of PTFE particles having an average primary particle diameter of from 0.1 to 0.5 μm; from 0.1 to 20,000 ppm, to the PTFE particles, of a fluorinated emulsifier selected from a C4-7 fluorinated carboxylic acid which may have an etheric oxygen atom, and salts of thereof; from 1 to 20 parts by mass, to 100 parts by mass of the PTFE particles, of a nonionic surfactant represented by R1—O-A-H (wherein R1 is a C8-18 alkyl group, and A is a polyoxyalkylene chain); from 0.004 to 0.040 parts by mass, to 100 parts by mass of the PTFE particles, of a polyether polysiloxane copolymer, wherein the polyether chain consists solely of a polyoxypropylene group; and water.

公开(公告)号：US11174411B2

公开(公告)日：2021-11-16

申请号：US16249020

申请日：2019-01-16

Applicant: AGC Inc.

Inventor： Tomoya Hosoda ,  Tatsuya Terada ,  Shigeki Kobayashi ,  Atsumi Yamabe

IPC: C08J3/12 ,  C09D127/18 ,  C08F18/08 ,  C08F20/04 ,  C08F16/24 ,  C08F22/06 ,  C08L27/18 ,  B32B15/082 ,  C08J5/18 ,  C08F14/26 ,  C08L101/00 ,  C08F20/18 ,  C08F234/00 ,  C08F20/32 ,  C08F214/26 ,  B32B15/08 ,  H05K1/03 ,  H05K3/28 ,  C09D5/00 ,  H05K3/06

Abstract: To provide a liquid composition whereby a resin powder can be uniformly dispersed in a resin or the like without being scattered, and a method for producing a film, a laminate or the like by using the liquid composition. The liquid composition comprises a liquid medium and a resin powder dispersed in the liquid medium, and characterized in that the average particle size of the resin powder is from 0.3 to 6 μm, the volume-based cumulative 90% diameter of the resin powder is at most 8 μm, and the resin powder is a resin containing a fluorinated copolymer having a specific functional group. And, the method is a method for producing a film, a laminate or the like by using the liquid composition.

公开(公告)号：US10975187B2

公开(公告)日：2021-04-13

申请号：US15789320

申请日：2017-10-20

Applicant: AGC Inc. ,  AGC CHEMICALS EUROPE, LIMITED

Inventor： Shigeki Kobayashi ,  Ariana Claudia Morgovan-Ene ,  Anthony Eugene Wade

IPC: C08F259/08 ,  C08F214/26 ,  C09D5/03 ,  C09D127/18 ,  C09D151/00 ,  H01B3/44 ,  H01B7/02 ,  H01B13/00 ,  H01B17/58 ,  C08F214/28 ,  C08F216/14

Abstract: To optimize the primary particle size of a modified PTFE fine powder to shorten the sintering time during the extrusion molding.
A modified polytetrafluoroethylene fine powder which is a fine powder of a non-melt-processable modified polytetrafluoroethylene comprising units derived from tetrafluoroethylene, units derived from hexafluoropropylene, units derived from a perfluoro(alkyl vinyl ether) represented by CF2═CFO—CnF2n+1 (n is an integer of from 1 to 6) and units derived from a (perfluoalkyl)ethylene represented by CH2═CH—CmF2m+1 (m is an integer of from 3 to 7).

公开(公告)号：US20190144700A1

公开(公告)日：2019-05-16

申请号：US16249020

申请日：2019-01-16

Applicant: AGC Inc.

Inventor： Tomoya HOSODA ,  Tatsuya Terada ,  Shigeki Kobayashi ,  Atsumi Yamabe

IPC: C09D127/18 ,  C08F214/26 ,  C09D5/00 ,  H05K3/06 ,  H05K3/28 ,  H05K1/03

Abstract: To provide a liquid composition whereby a resin powder can be uniformly dispersed in a resin or the like without being scattered, and a method for producing a film, a laminate or the like by using the liquid composition. The liquid composition comprises a liquid medium and a resin powder dispersed in the liquid medium, and characterized in that the average particle size of the resin powder is from 0.3 to 6 μm, the volume-based cumulative 90% diameter of the resin powder is at most 8 μm, and the resin powder is a resin containing a fluorinated copolymer having a specific functional group. And, the method is a method for producing a film, a laminate or the like by using the liquid composition.