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    • 6. 发明授权
    • Polyisocyanates containing isocyanurate groups and prepared by
trimerizing alkyl-substituted cycloaliphatic diisocyanates
    • 含有异氰脲酸酯基并通过三烷基取代的环脂族二异氰酸酯制备的多异氰酸酯
    • US5837796A
    • 1998-11-17
    • US883477
    • 1997-06-25
    • Hans-Joachim SchollBernhard JansenRolf-Volker Meyer
    • Hans-Joachim SchollBernhard JansenRolf-Volker Meyer
    • C07D251/34C08G18/02C08G18/18C08G18/70C08G18/79C08G18/82
    • C07D251/34C08G18/706C08G18/792
    • The present invention relates to a process for preparing polyisocyanates containing isocyanurate groups by trimerizing a portion of the isocyanate groups of an organic polyisocyanate component containing a) one or more diisocyanates corresponding to formula (1) ##STR1## wherein R represents a saturated, straight-chain, aliphatic hydrocarbon group having 8 to 15 carbon atoms and optionally b) up to 95 NCO equivalent-%, based on the total equivalents a) and b), of one or more organic polyisocyanates other than a), in the presence of trimerization catalysts and terminating the trimerization reaction at any desired degree of trimerization. The invention also relates to the polyisocyanates containing isocyanurate groups obtained by this process and to their use, optionally in excess starting polyisocyanates and optionally blocked with blocking agents for isocyanate groups, as an isocyanate component for preparing polyisocyanate addition products.
    • 本发明涉及通过将有机多异氰酸酯组分的一部分异氰酸酯基团三聚而制备含有异氰脲酸酯基的多异氰酸酯的方法,该有机多异氰酸酯组分含有a)一种或多种对应于式(1)的二异氰酸酯,其中R表示饱和 ,具有8至15个碳原子的直链脂族烃基和任选的b)基于a)和b)的总当量a)和b)至多95NCO当量,一种或多种除a)之外的有机多异氰酸酯,在 存在三聚催化剂并以任何所需的三聚程度终止三聚反应。 本发明还涉及通过该方法获得的含有异氰脲酸酯基团的多异氰酸酯基团,以及它们的用途,任选地过量起始多异氰酸酯,并任选地用异氰酸酯基团的封端剂封端,作为用于制备多异氰酸酯加成产物的异氰酸酯组分。