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    MANUFACTURE OF POLY-P-PHENYLENESULFIDE
    63.
    发明专利
    MANUFACTURE OF POLY-P-PHENYLENESULFIDE 失效

    公开(公告)号：JPS57205118A

    公开(公告)日：1982-12-16

    申请号：JP8966381

    申请日：1981-06-12

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  KOBAYASHI HIROAKI ,  NOGUCHI YUKIO

    IPC: B29C61/00 ,  B29C55/00 ,  B29D7/01 ,  C08G75/02 ,  C08J5/18

    Abstract: PURPOSE:To manufacture a film having an excellent dimensional stability, by heat-treating a biaxially stretched poly-p-phenylenesulfide film at a specified temperature under tension, then fixing again and heat treating it at a specified high temperature. CONSTITUTION:A film composed of a biaxially stretched poly-p-phenylenesulfide is at first heat treated at 150-280 deg.C under tension. After that, it is heated at a temperature higher than 150-280 deg.C and below a melting point of the film at a relaxed state or at a constant length or under a slight stretch. An obtained film has a good dimensional stability and is useful for a printed circuit material and an optical image recording material.

    POLYYPPPHENYLENE SULFIDE FILM
    64.
    发明专利
    POLYYPPPHENYLENE SULFIDE FILM 失效

    公开(公告)号：JPS5662121A

    公开(公告)日：1981-05-27

    申请号：JP13755479

    申请日：1979-10-26

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  NOGUCHI YUKIO ,  KOBAYASHI HIROAKI

    IPC: B29C55/00 ,  B29C49/00 ,  B29C55/02 ,  B29C55/12 ,  B29D7/00 ,  B29K81/00 ,  B29L7/00 ,  C08J5/18

    Abstract: PURPOSE:To obtain a ply-p-phenylene sulfide film excellent in the thermal, mechanical and dimensional stability including phenylene sulfide as a main structural unit and having specified melt viscosity, relative crystallization, degree dimension of microcrystal and orientation. CONSTITUTION:Sodium sulfide and the like and p-dihalobenzene such as p-dichlorobenzene are polymerized under pressure in a high-boiling polar solvent to obtain a polymer containing more than 90mol% of a structural unit indicated by the molecular formula. This polymer is melt-extruded and then cooled at a speed higher than 10 deg.C/sec. to form an amorphous film. The amorphous film thus obtained is subjected to a biaxial stretching preferably at a temperature of 85 deg.C-110 deg.C so as to have an enlarged area 8.5-21 times as large as the original one, and further to a heat setting in a stretched state at a temperature of 200 deg.C-275 deg.C for 1-300sec. Thus a desired quality of film can be obtained having a melt viscosity of 100- 60,000cgs. at shear rate of 200(sec) , a relative crystalization degree of 5-35, a dimension of microcrystal of 40-150Angstrom and an orientation in the edge and end directions of 0.1-0.6.

    TRANSPARENT BIAXIALLY ORIENTED POLYYPPPHENYLENE SULFIDE FILM
    66.
    发明专利
    TRANSPARENT BIAXIALLY ORIENTED POLYYPPPHENYLENE SULFIDE FILM 失效

    公开(公告)号：JPS54142275A

    公开(公告)日：1979-11-06

    申请号：JP5011778

    申请日：1978-04-28

    Applicant: TORAY INDUSTRIES

    Inventor： ASAKURA TOSHIYUKI ,  NOGUCHI YUKIO ,  KOBAYASHI HIROAKI

    IPC: H01B3/30 ,  B29C49/00 ,  B29C55/00 ,  B29C55/12 ,  H01G4/18

    Abstract: PURPOSE:A biaxially oriented poly-p-phenylene sulfide film having improved thermally stabilized dimensional stability and mechanical properties and transparency, having a specific melt viscosity and density. CONSTITUTION:Poly-p-phenylene sulfide having a melt viscosity of 100-600,000 poise at 300 deg.C at a shear rate of 200 (sec) and not less than 90% of a repeating unit shown by the formula is molded into a film, which is quenched at a cooling rate not more than 5 deg.C/sec. to form a non-crystalline transparent film having a crystallinity not more than 15%. The film is then biaxially orientated at 80-120 deg.C at an area ratio not less than 3 to make a biaxially oriented film having a density not more than 1.330 at 25 deg.C, which is subjected to heat setting at a termperature in the range of 180 deg.C to the melting point of the polymer for one second-ten minutes under stretch to give a transparent biaxially orientated poly-p-phenylene sulfide film having a density of 1.330-1,400 at 25 deg.C.

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