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    2.
    发明专利
    未知

    公开(公告)号：DE3382369D1

    公开(公告)日：1991-09-12

    申请号：DE3382369

    申请日：1983-12-29

    Applicant: TORAY INDUSTRIES

    Inventor： CHIBA KAZUMASA ,  KOBAYASHI KAZUHIKO ,  SUSUKI TOSAKU

    IPC: C08G69/18 ,  C08G69/40 ,  C08G69/42

    Abstract: A block copolyamide having effectively improved impact strength is obtained by polymerizing a mixture comprising substantially from about 50 to about 95 parts by weight of lactam and from about 50 to about 5 parts by weight of polyol in the presence of a catalyst for an anionic polymerization and an activator represented by the following formula (I);wherein A denotes a bifunctional organic residue having at least one kind of heteroatom selected from the group consisting of N, 0, S, F, Cl, Br and I, Y and Y' denote an acyl group selected from the group consisting ofand n and n' denote an integer of 3 to 11 or by polymerizing, in the presence of a catalyst for anionic polymerization, a mixture comprising substantially from about 50 to about 95 parts by weight of lactam and from about 5 to about 50 parts by weight of prepolymer obtained by a reaction of polyol and an activator represented by the above formula (I), wherein A denotes a bifunctional aromatic residue having at least one halogen atom attached to the aromatic ring.

    ACRYLIC FIBER FOR GRAPHITE FIBERS
    4.
    发明专利
    ACRYLIC FIBER FOR GRAPHITE FIBERS 失效

    公开(公告)号：JPH02264011A

    公开(公告)日：1990-10-26

    申请号：JP8518389

    申请日：1989-04-03

    Applicant: TORAY INDUSTRIES ,  TORAY RES CENTER KK

    Inventor： ONO KEIZO ,  TSUNODA ATSUSHI ,  SUSUKI TOSAKU

    IPC: C08F220/04 ,  C08F30/04 ,  C08F220/42 ,  C08F220/44 ,  C08F230/06 ,  D01F6/18 ,  D01F6/38 ,  D01F9/22

    Abstract: PURPOSE:To obtain the title fibers giving graphite fibers of super-high elastic modulus by using a polymer containing acrylonitrile, a composition for accelerating pre-oxidation and boron containing vinyl compound at specified ratio. CONSTITUTION:The subject fibers are composed of (A) more than 85wt.%, preferably more than 90wt.% of acrylonitrile, (B) 0.1 to 4wt.%, preferably 0.3 to 1wt.% of a component for accelerating predeoxidation, for example, a vinyl monomer such as (meth)acrylic acid or itaconic acid, and (C) 0.05 to 3wt.%, preferably 0.3 to 1wt.% (based on boron) of a boron containing vinyl compound such as vinyl di-n-butoxyborane, isopropenyl di-n-butoxyborane).

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