利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

13 条记录 (耗时 0.014 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 COMPOSITE FIBER COMPONENTS
    6.
    发明申请
    METHOD FOR PRODUCING COMPOSITE FIBER COMPONENTS 审中-公开

    公开(公告)号：US20190048160A1

    公开(公告)日：2019-02-14

    申请号：US16076915

    申请日：2017-03-01

    申请人： Covestro Deutschland AG

    发明人： Marcel Schornstein

    IPC分类号： C08J5/24 ,  C08G18/48 ,  C08J5/04 ,  B29C70/34 ,  B29C70/54

    摘要： The present disclosure relates to sheet moulding compounds (SMC) and to a method for producing composite fiber components from said SMC, based on a polyurethane reaction mixture consisting of (A) at least one aromatic isocyanate component, (B) 70 to 100 wt % of at least one polyol component having at least 70% secondary OH groups, a number average OH count of 15-500 mg KOH/g and functionality of 1.9-2.5, (C) 0-30 wt % of at least one polyol having a number average OH count of 15-500 mg KOH/g and a functionality of 1.9-2.5, (D) as applicable, short-chain polyol, (E) internal separating agent, (F) a thermolatent catalyst, and (G) as applicable, auxiliary and/or additional substances, wherein the PUR reaction mixture has an initial viscosity of 2,500-14,000 mPas at 23° C. and the ratio of NCO groups/OH groups is 1.35:1-10:1.

    Composite material comprising a polyurethane-polyacrylate resin matrix
    10.
    发明授权
    Composite material comprising a polyurethane-polyacrylate resin matrix 有权

    公开(公告)号：US11512164B2

    公开(公告)日：2022-11-29

    申请号：US16644199

    申请日：2018-09-12

    申请人： Covestro Deutschland AG

    发明人： Nicolas Stoeckel ,  Marcel Schornstein ,  Kai Laemmerhold ,  Guobin Sun

    IPC分类号： C08G18/76 ,  C08G18/48 ,  C08G18/67 ,  C08K5/01

    摘要： The present invention relates to an isocyanate-reactive component B) comprising: B1) one or more organic polyols selected from the group consisting of polyether polyols, polyester polyols, polyetherester polyols, polymer polyols, polycarbonate polyols and polyethercarbonate polyols; B2) one or more compounds having the structure of Formula (I) wherein R1 is selected from the group consisting of hydrogen, methyl or ethyl; R2 is selected from the group consisting of alkylene having 2 to 6 carbon atoms, 2,2-bis(4-phenylene)propane, 1,4-bis(methylene)benzene, 1,3-bis(methylene)benzene, 1,2-bis(methylene)benzene; n is an integer selected from 1 to 6; and B3) at least one radical reaction adjuvant selected from the group consisting of aryl-substituted olefins, a composite material comprising a thermosetting polyurethane-polyacrylate resin matrix made with such isocyanate-reactive component B) and a reinforcement material and a process of preparing the same.