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    20.
    发明专利
    未知

    公开(公告)号：DE1645450A1

    公开(公告)日：1970-10-22

    申请号：DEST023951

    申请日：1965-06-09

    Applicant: STAMICARBON

    Inventor： MOURIK JOHANNES VAN ,  BEVEREN JOHANNES VAN

    IPC: C07D409/04 ,  C08G69/20 ,  C08G

    Abstract: A lactone containing a di-unsaturated 6-membered lactone ring may promote the anionic polymerization of a lactam. Lactones specified are coumarin and tricyclo-[9.3.0.0.2.8] 3,10 - dioxa - 4,9 - dioxo - tetradecadiene-1-11, 2-8; 0.05-10 mole per cent may be used. Catalysts specified are sodium caprolactamate, AlPri3, ZnEt2, alkali metal alkyls, alkali metals, alkaline earth metals and their hydrides, oxides, hydroxides and carbonates, alkyl magnesium bromides and aryl magnesium bromides; 0.1-10 mole per cent may be used. Lactams specified are butyrolactam caprolactam, oenantholactam, caprylolactam, decyllactam, undecyllactam and laurolactam. Other additives present in the reaction mixture may be dyes, wood flour, carborundum, carbon black, powdered shale, coal dust, coke dust, synthetic fibres and fabrics, polystyrene, polyformaldehyde, polypropylene, polyethylene, polyamides, condensates of phenol, urea and melamine with formaldehyde and blowing agents, e.g. hydrocarbons. The polymerization temperature may be between the m.p. of the monomer and that of the polymer or it may be between 90 DEG and 250 DEG C., e.g. 90-150 DEG C. at the beginning of the reaction rising due to the heat of reaction to 200-215 DEG C. The catalyst may be added to the molten monomer and thus heated to the polymerization temperature before the promoter is added. A blowing agent which vaporizes at the polymerization temperature may be included in the reaction mixture.

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