公开(公告)号：US5135997A

公开(公告)日：1992-08-04

申请号：US582247

申请日：1990-09-14

申请人： Karl-Heinz Feltgen ,  Rudiger Franck ,  Konrad Hable ,  Siegfried Korte ,  Manfred Heckenbach

发明人： Karl-Heinz Feltgen ,  Rudiger Franck ,  Konrad Hable ,  Siegfried Korte ,  Manfred Heckenbach

IPC分类号： C08F2/02 ,  C08F2/34 ,  C08F2/44 ,  C08F4/04 ,  C08F4/40 ,  C08F20/42 ,  C08F20/44 ,  C08F265/08

CPC分类号： C08F265/08

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.

摘要翻译： 本发明涉及丙烯腈与一种或多种可共聚单体在反应条件下自由基均相或共聚的方法，使得单体主要以气态吸附形式存在，并且可能吸附的单体聚合， 在固相（无溶剂聚合）中发生并产生粉末状的PAN-（共）聚合物。 该方法优选在少量的介质物质例如二甲基甲酰胺的存在下进行，其不改变PAN-聚合物的粉末稠度，但是引起相当快速且对新形成的聚丙烯腈聚合物的产率大大提高。