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    POLYISOCYANURATE POLYMERS AND PROCESS FOR THE PRODUCTION OF POLYISOCYANURATE POLYMERS
    3.
    发明公开
    POLYISOCYANURATE POLYMERS AND PROCESS FOR THE PRODUCTION OF POLYISOCYANURATE POLYMERS 审中-公开

    公开(公告)号：EP3424975A1

    公开(公告)日：2019-01-09

    申请号：EP18174958.1

    申请日：2016-04-21

    申请人： Covestro Deutschland AG

    发明人： LAAS, Hans-Josef ,  MAGER, Dieter ,  MATNER, Mathias ,  ACHTEN, Dirk ,  HOCKE, Heiko

    IPC分类号： C08G18/79 ,  C07D251/34 ,  C08G18/02

    摘要： The present invention relates to novel polyisocyanurate plastics which are obtainable by catalytic trimerization of a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates. "Low in monomeric diisocyanates" means that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight. The invention further relates to the use of these polyisocyanurate plastics for production of coatings, films, semi-finished products and mouldings, and to a process for producing polyisocyanurate plastics comprising the following steps: (a) providing a polyisocyanate composition A) which contains oligomeric polyisocyanates and is low in monomeric diisocyanates, "low in monomeric diisocyanates" meaning that the polyisocyanate composition A) has a content of monomeric diisocyanates of at most 20% by weight; (b) catalytically trimerizing the polyisocyanate composition A).