利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

8 条记录 (耗时 0.013 秒)

    Lightfast polyurethane prepregs and fiber composite elements produced therefrom
    3.
    发明授权
    Lightfast polyurethane prepregs and fiber composite elements produced therefrom 有权

    公开(公告)号：US10167369B2

    公开(公告)日：2019-01-01

    申请号：US15507635

    申请日：2015-08-25

    申请人： Covestro Deutschland AG

    发明人： Marcel Schornstein ,  Florian Hupka ,  Dirk Wegener ,  Harald Rasselnberg

    IPC分类号： C08J5/24 ,  C08J5/04 ,  C08G18/42 ,  B29B11/16 ,  C03C25/326

    摘要： The present invention relates to storage-stable prepregs (preimpregnated fibers) on the basis of lightfast, low-viscous polyurethane systems with an increased characteristic number and flat fiber composite components (molded bodies; composite compounds) produced therefrom, which can be obtained by methods of impregnation of, for example, woven fabrics and laid scrims, and to a method for the production thereof. The polyurethane system can comprise a reaction product of a reaction mixture of an isocyanate component and a polyol formulation. The isocyanate component comprises an organic isocyanate. The polyol formulation comprises a polyol component, a dianhydrohexitol, a latent catalyst, and optionally auxiliaries and/or additives.

    Method for producing a vehicle composite component
    5.
    发明授权
    Method for producing a vehicle composite component 有权

    公开(公告)号：US11584096B2

    公开(公告)日：2023-02-21

    申请号：US17368373

    申请日：2021-07-06

    申请人： Webasto SE ,  Covestro Deutschland AG

    发明人： Tina Obermeier ,  Harald Rasselnberg

    IPC分类号： B29C70/34 ,  B29C70/48 ,  B29C70/08 ,  B29C70/44 ,  B29C70/54 ,  B29C70/18 ,  B29L31/30

    摘要： A method for producing a vehicle composite component with a layer structure having a core layer in a molding tool, the core layer being formed with regions of different thickness is provided. Steps for this method may include placing a cover layer, in particular a preformed cover layer, which in particular forms an outer skin of the vehicle composite component, onto a mold base plate of the open molding tool; introducing a first fiber layer, which is impregnated with PU resin and has not been subjected to forming, between the cover layer and a first mold counterplate of the open molding tool; closing the molding tool and compression molding the first fiber layer, which is impregnated with PU resin, against the cover layer, as a result of which a preform with a first support layer containing the first fiber layer is formed and hardened while supplying heat.