12.
    发明专利
    未知

    公开(公告)号:AT30439T

    公开(公告)日:1987-11-15

    申请号:AT84114870

    申请日:1984-12-06

    Applicant: STAMICARBON

    Abstract: Polyacrylonitrile articles, such as filaments, tapes and films, having high tensile strength and modulus, and prepared by adding to a solution of polyacrilontrile with a molecular weight above 3 x 10 5 , pref. above 5 x 10 5 , a minor amount of a bivalent metal compound, converting the solution into a solvent containing article, cooling this article to form a gelarticle, removing from this gel the solvent and metal compound, and stretching the resulting article at increased temperature.With this process filaments with a tensile strength above 1.2 GPa and a modulus above 16 GPa can be obtained.

    16.
    发明专利
    未知

    公开(公告)号:BR8406282A

    公开(公告)日:1985-10-01

    申请号:BR8406282

    申请日:1984-12-07

    Abstract: Polyacrylonitrile articles, such as filaments, tapes and films, having high tensile strength and modulus, and prepared by adding to a solution of polyacrilontrile with a molecular weight above 3 x 10 5 , pref. above 5 x 10 5 , a minor amount of a bivalent metal compound, converting the solution into a solvent containing article, cooling this article to form a gelarticle, removing from this gel the solvent and metal compound, and stretching the resulting article at increased temperature.With this process filaments with a tensile strength above 1.2 GPa and a modulus above 16 GPa can be obtained.

    17.
    发明专利
    未知

    公开(公告)号:DE3667306D1

    公开(公告)日:1990-01-11

    申请号:DE3667306

    申请日:1986-08-19

    Applicant: STAMICARBON

    Abstract: High modulus and high strength articles of polyvinyl-­alcohol are obtained by thermoreversible gelation of a 5-50 wt.% solu­tion of a polyvinylalcohol with an M w of 2.5 × 10⁴ to 5 × 10⁵ in water, followed by solvent removal and high stretching.Pref. gelation is obtained by cooling to a temperature of at least 40 ◊C below the gelation temperature.With this process low costs of solvent removal and regeneration are obtained.

    18.
    发明专利
    未知

    公开(公告)号:AT48447T

    公开(公告)日:1989-12-15

    申请号:AT86201437

    申请日:1986-08-19

    Applicant: STAMICARBON

    Abstract: High modulus and high strength articles of polyvinyl-­alcohol are obtained by thermoreversible gelation of a 5-50 wt.% solu­tion of a polyvinylalcohol with an M w of 2.5 × 10⁴ to 5 × 10⁵ in water, followed by solvent removal and high stretching.Pref. gelation is obtained by cooling to a temperature of at least 40 ◊C below the gelation temperature.With this process low costs of solvent removal and regeneration are obtained.

    POLYACRYLO NITRILE FILAMENTS PREPARATION

    公开(公告)号:AU571033B2

    公开(公告)日:1988-03-31

    申请号:AU3638784

    申请日:1984-12-07

    Applicant: STAMICARBON

    Abstract: Polyacrylonitrile articles, such as filaments, tapes and films, having high tensile strength and modulus, and prepared by adding to a solution of polyacrilontrile with a molecular weight above 3 x 10 5 , pref. above 5 x 10 5 , a minor amount of a bivalent metal compound, converting the solution into a solvent containing article, cooling this article to form a gelarticle, removing from this gel the solvent and metal compound, and stretching the resulting article at increased temperature.With this process filaments with a tensile strength above 1.2 GPa and a modulus above 16 GPa can be obtained.

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