公开(公告)号：JPH11323130A

公开(公告)日：1999-11-26

申请号：JP15534998

申请日：1998-05-20

Applicant: TORAY INDUSTRIES

Inventor： WATANABE YASUTOSHI ,  MIYAJI SHINICHIRO ,  KUROME TAIICHI

IPC: C08J5/18 ,  B29B13/08 ,  B29C55/02 ,  B29K81/00 ,  B29L7/00 ,  C08L81/02

Abstract: PROBLEM TO BE SOLVED: To provide a polyphenylene sulfide film which can be formed stably in improved yields without encountering defects of spinneret streaks and is excellent in processability in use for capacitors. SOLUTION: There are provided a polyphenylene sulfide resin composition, wherein the difference between the content of volatiles at 250 deg.C and that of volatiles at 150 deg.C is at most 0.3 wt.% based on the total resin composition and a polyphenylene sulfide film based on a polyphenylene sulfide resin composition, wherein the difference between the content of volatiles at 250 deg.C and that of volatiles at 150 deg.C is at most 0.02 wt.% based on the total film.

公开(公告)号：JP2001192555A

公开(公告)日：2001-07-17

申请号：JP2000000766

申请日：2000-01-06

Applicant: TORAY INDUSTRIES

Inventor： WATANABE YASUTOSHI ,  MIYAJI SHINICHIRO ,  HAGIWARA IKUO

IPC: C08J5/18 ,  B29C55/00 ,  C08K3/00 ,  C08L81/02

Abstract: PROBLEM TO BE SOLVED: To provide polyphenylene sulfide films which solve the color specks when films are formed and improve the film-forming yield by stable when films are formed and also excel in fabricability in the condenser use. SOLUTION: Polyphenylene sulfide resin compositions comprise a polyphenylene sulfide resin and have a melt viscosity at 316 deg.C after heat treatment of 1,500 P to less than 6,000 P and, at the same time, a difference in melt viscosity between before and after heat treatment of less than 2,000 P, and the polyphenylane sulfide films are produced by using the same.

公开(公告)号：JP2000034356A

公开(公告)日：2000-02-02

申请号：JP20322998

申请日：1998-07-17

Applicant: TORAY INDUSTRIES

Inventor： KUROME TAIICHI ,  MIYAJI SHINICHIRO ,  WATANABE YASUTOSHI

IPC: C08J5/18

Abstract: PROBLEM TO BE SOLVED: To obtain the subject polyphenylene sulfide film capable of improving the flatness of the film and also reducing the surface defects of a highly functional film by setting the thickness, surface coarseness and fish eye of the polyphenylene film. SOLUTION: This biaxially oriented polyphenylene film for releasing is a film set to have 10-200 μm thickness, 0.005-0.10 μm centerline average roughness (Ra) and =200 μm. In the film, it is preferable to have

公开(公告)号：JP2000218740A

公开(公告)日：2000-08-08

申请号：JP2687899

申请日：1999-02-04

Applicant: TORAY INDUSTRIES

Inventor： WATANABE YASUTOSHI ,  NOGUCHI YUKIO ,  KUROME TAIICHI

IPC: H01G4/18 ,  B32B15/08 ,  B32B27/00 ,  B32B27/36 ,  H01G4/30 ,  H01G4/32

Abstract: PROBLEM TO BE SOLVED: To improve voltage resistance, which has been a problem for a PPS film excellent in capacitor properties such as heat resistance and dielectric properties, and self-restoration properties (self-healing properties) without deteriorating the processability of a capacitor. SOLUTION: A polyphenylene sulfide laminated film in which a polymer film layer comprising an amorphous polyester resin composition is laminated at least on one side of a polyphenylene sulfide film, and the heat shrinkage factor at 230 deg.C of both shafts is at least -1-10% and a capacitor using the laminated film.

公开(公告)号：JP2001316480A

公开(公告)日：2001-11-13

申请号：JP2000131932

申请日：2000-05-01

Applicant: TORAY INDUSTRIES

Inventor： WATANABE YASUTOSHI ,  MIYAJI SHINICHIRO ,  HAGIWARA IKUO

IPC: C08J3/00 ,  C08J5/18 ,  H01G4/14

Abstract: PROBLEM TO BE SOLVED: To provide a method for stably producing a polyphenylene sulfide film excellent in processability on use in a capacitor in yields improved by eliminating color unevenness (i.e., streaky defects in the lengthwise direction of a film) sometimes occurring during film formation. SOLUTION: There are provided method for producing a heat-treated polyphenylene sulfide resin composition comprising heat-treating a polyphenylene sulfide resin composition having a viscosity of 1,500 to below 6,000 P at a temperature of 100 to below 200 deg.C for a time of 2 to below 30 hr in a vacuum or inert gas atmosphere of an oxygen partial pressure of below 20 mmHg and a method for producing a film based on the heat-treated polyphenylene sulfide resin composition.

公开(公告)号：JP2000239414A

公开(公告)日：2000-09-05

申请号：JP4745099

申请日：1999-02-25

Applicant: TORAY INDUSTRIES

Inventor： NOGUCHI YUKIO ,  WATANABE YASUTOSHI ,  KUROME TAIICHI

IPC: H01G4/18 ,  B29C55/12 ,  C01F11/18 ,  C08J5/18 ,  C08K3/26 ,  C08K7/00 ,  C08L81/02

Abstract: PROBLEM TO BE SOLVED: To provide biaxially oriented poly-p-phenylene sulfide films suitable for film condenser dielectrics, release sheets, floppy disk bases and the like which are good in sliding properties and reduced in falling-off of particles, and high in withstand voltage and reduced in insulation defects. SOLUTION: A biaxially oriented poly-p-phenylene sulfide film contains inert fine particles in the shape of a rectangular parallelepiped, and the average value of the side length ratio (the maximum side length to the minimum side length) of the inert fine particles in the shape of a rectangular parallelepiped in the film is 1-3, and the average particle diameter (the average value of a diameter corresponding to the area of a circle) is 0.05-3 μm and, in addition, the content of the inert fine particles in the film is 0.05 wt.% to less than 2 wt.%. Further, the inert fine particles are of calcite type calcium carbonate in the shape of a cube with a side length ratio of 1.