公开(公告)号：US20220157487A1

公开(公告)日：2022-05-19

申请号：US17591755

申请日：2022-02-03

Applicant: AGC INC.

Inventor： Wataru KASAI ,  Tomoya HOSODA ,  Atsumi MITSUNAGA ,  Tatsuya TERADA ,  Sota YUKI

IPC: H01B3/30 ,  B32B15/08 ,  B32B15/20 ,  B32B37/24 ,  B32B7/025 ,  H01B1/02 ,  H01B3/44

Abstract: To provide a film which is excellent in heat resistance, which is less likely to be warped and which has high adhesion, a method for producing it, and a metal-clad laminate and a coated metal conductor, using the film.
The film of the present invention comprises an aromatic polyimide base film, and a layer containing a polymer having units based on tetrafluoroethylene and units based on a perfluoro(alkyl vinyl ether) and an aromatic polymer, formed on each side of the base film.

公开(公告)号：US20200048420A1

公开(公告)日：2020-02-13

申请号：US16660895

申请日：2019-10-23

Applicant: AGC Inc.

Inventor： Tomoya HOSODA ,  Tatsuya TERADA ,  Atsumi YAMABE ,  Nobutaka KIDERA ,  Wataru KASAI

IPC: C08J5/18 ,  C08F214/26 ,  C08J5/24 ,  C08J5/12 ,  H05K3/02 ,  H05K1/03 ,  H05K1/02

Abstract: The purpose of the present invention is to provide a fluororesin film or fluororesin laminate excellent in heat resistance and excellent in interlayer adhesion to an object to be laminated, such as a prepreg, a method for producing a hot pressed laminate using said film or laminate, and a method for producing a printed circuit board. The fluororesin film contains a fluororesin having a melting point of from 260 to 380° C., and has an arithmetic average roughness Ra of at least 3.0 nm when inside of 1 μm2 of at least one surface thereof in the thickness direction is measured by an atomic force microscope. The laminate 1 has a layer A10 containing said fluororesin and a layer B12 made of another substrate, wherein the layer A10 has an arithmetic average roughness Ra of at least 3.0 nm when inside of 1 μm2 of a second surface 10b thereof is measured by an atomic force microscope.

公开(公告)号：US20220118742A1

公开(公告)日：2022-04-21

申请号：US17562167

申请日：2021-12-27

Applicant: AGC Inc.

Inventor： Wataru KASAI ,  Yuya HORIGUCHI ,  Seigo KOTERA ,  Tomoya HOSODA

IPC: B32B15/082 ,  B32B27/32 ,  B32B27/30 ,  C08J5/18

Abstract: As an exemplary configuration, a long film is configured by thermomeltable polymers including a first unit based on tetrafluoroethylene and a second unit based on perfluoro (alkyl vinyl ether), including spherulites of the thermomeltable polymers, wherein radius of each spherulite is 10 μm or less. As another exemplary configuration, a long film is configured by tetrafluoroethylene polymers having a melt flow rate within a range of 5 to 40 g/10 min. The long film is heated at 180° C. for 30 minutes so as to measure the thermal expansion rate, and when letting thermal expansion rate in a first direction, which extends at a 45-degree angle to a melt flow direction be A, and thermal expansion rate in a second direction orthogonal to the first direction be B, A and B are respectively within the range of −2 to +1%, and |A−B| is 1% or less.

公开(公告)号：US20210024702A1

公开(公告)日：2021-01-28

申请号：US17066853

申请日：2020-10-09

Applicant: AGC Inc.

Inventor： Atsumi YAMABE ,  Tomoya HOSODA ,  Wataru KASAI

IPC: C08J3/07 ,  C08J5/18 ,  C08L27/18 ,  C08L27/20 ,  C08L27/16 ,  B32B27/08 ,  B32B27/16 ,  B32B27/30 ,  B32B27/32 ,  B32B5/02

Abstract: To provide a dispersion, a laminate, a film and an impregnated woven fabric.
A powder dispersion comprising powder I of polymer I having units based on tetrafluoroethylene and an oxygen-containing polar group, powder II of polymer II containing units based on a fluoroolefin, a dispersing agent, and a liquid dispersion medium, wherein the ratio of the mass content of the polymer I to the mass content of the polymer II is at most 0.7, or such a power dispersion wherein the dispersing agent is a fluorinated surfactant having a hydroxy group. A laminate, a film, and an impregnated woven fabric produced by using such a powder dispersion.

公开(公告)号：US20190085142A1

公开(公告)日：2019-03-21

申请号：US16191799

申请日：2018-11-15

Applicant: AGC Inc.

Inventor： Wataru KASAI ,  Masami SUZUKI

IPC: C08J5/18 ,  H01L21/56 ,  H01L23/10 ,  H01L23/29

Abstract: To provide a film excellent in breakage resistance and uniform stretchability, and a method for its production. The film is a single-layer film characterized in that it is made of a blend resin of two kinds of resins both belonging to any one of ETFE, PFA, FEP, ECTFE and PMP, wherein the melt flow rate of the film is at least 6 g/10 min. and less than 20 g/10 min., and α of the film as measured by a prescribed measurement method is at least 0.99.

公开(公告)号：US20190085107A1

公开(公告)日：2019-03-21

申请号：US16191768

申请日：2018-11-15

Applicant: AGC Inc.

Inventor： Wataru KASAI ,  Kengo Kawahara

IPC: C08F214/26 ,  C08F210/02

Abstract: To provide an ETFE film which is unlikely to wrinkle when stretched and retracted, and a method for producing the same. It is an ethylene-tetrafluoroethylene copolymer film characterized in that the crystallinity obtainable by the formula (1) from the peak area S20 in the vicinity of 2θ=20°, the peak area S19 in the vicinity of 2θ=19° and the peak area S17 in the vicinity of 2θ=17° in the diffraction intensity curve obtainable by the X-ray diffraction method, is from 55 to 70%, and the proportion of the quasi-crystal layer obtainable by the formula (2) is from 10 to 20%: Crystallinity (%)=(S19+S20)/(S17+S19+S20)×100  (1) Proportion of quasi-crystal layer (%)=S20/(S17+S19+S20)×100  (2)

公开(公告)号：US20190008053A1

公开(公告)日：2019-01-03

申请号：US16125265

申请日：2018-09-07

Applicant: AGC Inc.

Inventor： Toru SASAKI ,  Wataru KASAI

IPC: H05K3/46 ,  H05K1/03 ,  H05K3/06

Abstract: To stably produce a laminate wherein heat resistant resin layers are laminated on both surfaces of a fluorinated resin layer, by thermal lamination.A process for producing a laminate, which comprises a preliminary heating step of heating, while conveying by a metal roll 33 for heating and a metal roll 32 for thermal lamination without pressing in the thickness direction, a temporary laminate wherein heat resistant resin films 2 and 2 are laminated on both surfaces of a fluorinated resin film 1 containing a melt-moldable fluorinated resin (A) having at least one type of functional groups selected from the group consisting of a carbonyl group-containing group, a hydroxyl group, an epoxy group and an isocyanate group and after the preliminary heating step, a thermal lamination step of pressing the temporary laminate in the thickness direction, while heating it by metal rolls 31 and 32 for thermal lamination at a thermal lamination temperature of at least the melting point of the fluorinated resin (A) ant at most 420° C., for bonding.

公开(公告)号：US20240199829A1

公开(公告)日：2024-06-20

申请号：US18588831

申请日：2024-02-27

Applicant: AGC Inc.

Inventor： Seigo KOTERA ,  Wataru KASAI ,  Junetsu NAKAMURA ,  Takatoshi YAOITA

IPC: C08J5/18 ,  B29C71/02 ,  B29K27/18 ,  B29K105/00 ,  C08F214/26 ,  C08J5/12 ,  H05K1/05 ,  H05K3/02

CPC classification number: C08J5/18 ,  B29C71/02 ,  C08F214/265 ,  C08J5/121 ,  H05K1/056 ,  H05K3/022 ,  B29C2071/022 ,  B29K2027/18 ,  B29K2105/0085 ,  C08F2800/10 ,  C08J2327/18 ,  H05K2201/015

Abstract: To provide a dielectric film which is excellent in dielectric properties and stability in the electric corrosion test and which is suitable for producing a high-precision printed board.
A roll film comprising a melt-processable fluororesin as the main component and having a thickness of from 1 to 100 μm, the dimensional change rate of which is less than 1.0%, in terms of an absolute value, in each of MD and TD, when heated at 150° C. for 30 minutes and then cooled to 25° C., based on the dimension at 25° C.

公开(公告)号：US20210040252A1

公开(公告)日：2021-02-11

申请号：US17070132

申请日：2020-10-14

Applicant: AGC Inc.

Inventor： Tomoya HOSODA ,  Wataru KASAI ,  Toru SASAKI ,  Masatoshi ABE

IPC: C08F214/26 ,  B32B27/30 ,  C09J135/00 ,  C09J7/35 ,  C09J7/25 ,  H05K3/38 ,  C09J127/18 ,  B32B7/12 ,  B32B15/08 ,  B32B37/06 ,  C09J5/06 ,  C23F1/00 ,  H05K1/03 ,  H05K3/06

Abstract: A material for a printed circuit board, which is a film composed of a fluorinated resin layer, where the fluorinated resin layer contains a composition containing a fluorinated copolymer having at least one functional group selected from a carbonyl group-containing group, a hydroxy group, an epoxy group and an isocyanate group, has a melt flow rate of at most 15 g/10 min measured at 372° C. under a load of 49N, and has a storage elastic modulus of at least 650 MPa.