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    Preparation of polyisocyanates having isocyanurate groups and their use
    2.
    发明授权
    Preparation of polyisocyanates having isocyanurate groups and their use 有权
    具有异氰脲酸酯基团的多异氰酸酯的制备及其用途

    公开(公告)号：US08742166B2

    公开(公告)日：2014-06-03

    申请号：US13889603

    申请日：2013-05-08

    Applicant: BASF SE

    Inventor： Frederic Lucas ,  Angelika Maria Steinbrecher ,  Philippe Desbois

    IPC: C07C261/00

    CPC classification number: C07D251/34 ,  B01J31/0285 ,  C08G18/022 ,  C08G18/092 ,  C08G18/1875 ,  C08G18/792

    Abstract: The present invention relates to a novel process for preparing polyisocyanates having isocyanurate groups by a partial trimerization of (cyclo)aliphatic diisocyanates in the presence of at least one trimerization catalyst from the group of ammonium salts of lactames and to the use of the thus obtainable polyisocyanates having isocyanurate groups as a polyisocyanate component in polyurethane coatings.

    Abstract translation: 本发明涉及一种制备具有异氰脲酸酯基团的多异氰酸酯的新方法，所述多异氰酸酯基通过（环）脂族二异氰酸酯在至少一种三聚化催化剂存在下由内酯类的铵盐进行部分三聚反应，以及使用如此获得的多异氰酸酯 在聚氨酯涂料中具有异氰脲酸酯基团作为多异氰酸酯组分。

    Water-emulsifiable isocyanates with improved properties
    4.
    发明授权
    Water-emulsifiable isocyanates with improved properties 有权

    公开(公告)号：US12168711B2

    公开(公告)日：2024-12-17

    申请号：US17621709

    申请日：2020-06-18

    Applicant: BASF SE

    Inventor： Frederic Lucas ,  Harald Schaefer

    IPC: C08G18/08 ,  C08G18/10 ,  C08G18/22 ,  C08G18/28 ,  C08G18/48 ,  C08G18/70 ,  C08G18/73 ,  C08G18/76 ,  C08G18/78 ,  C08G18/79 ,  C09D175/08 ,  C09J175/08

    Abstract: A process for producing a water-emulsifiable polyisocyanate formulation, in which, in a first process step, (A) a dispersion-active reaction product (E) is prepared from at least one diisocyanate selected from the group of hexamethylene 1,6-diisocyanate, pentamethylene 1,5-diisocyanate, 4,4′-di(isocyanatocyclohexyl)methane, 1-isocyanato-3,3,5-trimethyl-5-(isocyanatomethyl)cyclohexane, tolylene 2,4- and 2,6-diisocyanate, tetramethylxylylene diisocyanate, p-xylylene diisocyanate, 2,4′- and 4,4′-diisocyanatodiphenylmethane, with at least one mono- or polyhydric polyalkylene ether alcohol having 2 to 4 carbon atoms in the alkylene groups that comprises a polymer chain having at least 8 ethylene oxide units, and the resultant reaction product (E), in a second process step, (B) is mixed with at least one (cyclo)aliphatic polyisocyanate having an average NCO functionality of 2.2 to 5.0, preferably of 2.5 to 4.0, wherein step (B) is performed in the presence of an allophanatization catalyst and the conditions are chosen such that (E) and the polyisocyanate form allophanate groups, characterized in that the allophanatization catalyst is at least one salt consisting of a metal cation and at least one dithiophosphate anion.

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