发明名称 |
PROCESS FOR THE SOLID PHASE POLYMERIZATION OF ACRYLONITRILE FROM THE GASEOUS PHASE |
摘要 |
This invention relates to a process for the radical homo-or copolymerization of acrylonitrile with one or more copolymerizable monomers under reaction conditions such that the monomers are present predominantly in a gaseous form of an adsorbed form and polymerization of the monomers, which are presumably adsorbed, takes place in the solid phase (solvent-free polymerization) and results in pulverulent PAN-(co)polymers. The process is preferably carried out in the presence of small quantities of a mediator substance such as dimethylformamide which does not alter the pulverulent consistency of the PAN-polymers but leads considerably more rapidly and with much improved yields to freshly formed polyacrylonitrile polymers.
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申请公布号 |
US5135997(A) |
申请公布日期 |
1992.08.04 |
申请号 |
US19900582247 |
申请日期 |
1990.09.14 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
FELTGEN, KARL-HEINZ;FRANCK, RUEDIGER;HABLE, KONRAD;KORTE, SIEGFRIED;HECKENBACH, MANFRED |
分类号 |
C08F2/02;C08F2/34;C08F2/44;C08F4/04;C08F4/40;C08F20/42;C08F20/44;C08F265/08 |
主分类号 |
C08F2/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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