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    • 10. 发明授权
    • Process for the preparation of polyisocyanates containing isocyanurate
groups, and the use of the products of the process as isocyanate
component in the production of polyurethanes
    • 用于制备含有异氰脲酸酯基团的多异氰酸酯的方法,以及该方法的产物在聚氨酯生产中作为异氰酸酯组分的用途
    • US4487928A
    • 1984-12-11
    • US333943
    • 1981-12-23
    • Roland RichterHanns P. M/u/ llerKuno Wagner
    • Roland RichterHanns P. M/u/ llerKuno Wagner
    • C08G18/00C07D251/34C08G18/02C08G18/79C08G18/28C08G18/70C08G73/06
    • C08G18/791C07D251/34
    • The present invention thus relates to a process for the preparation of polyisocyanates having isocyanurate groups by the trimerization of part of the isocyanate groups of organic polyisocyanates or of mixtures of di- and mono-isocyanates in the presence of basic compounds as trimerization catalysts, with termination of the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalysts used are 1:1-complexes of (i) basic sodium or potassium compounds and (ii) 1,4,7,10,13-pentaoxacylopentadecane or 1,4,7,10,13,16-hexaoxacyclooctadecane.This invention also relates to solutions suitable as catalyst components for this process, comprising 1:1-complexes of (i) basic sodium or potassium compounds and (ii) 1,4,7,10,13-pentaoxacyclopentadecane or 1,4,7,10,13,16-hexaoxacyclooctadecane dissolved in polar lacquer solvents and/or at least one compound within the molecular weight range of about 32 to 250 which has alcoholic hydroxyl groups and is liquid at room temperature.This invention also relates to the use of the products of the process according to the invention, optionally freed from monomeric starting polyisocyanate and/or optionally blocked with blocking agents for isocyanate groups, as an isocyanate component in the production of polyurethanes by the isocyanate polyaddition process.
    • 因此,本发明涉及通过在作为三聚催化剂的碱性化合物存在下,部分有机多异氰酸酯的部分异氰酸酯基团或二异氰酸酯和单异氰酸酯的混合物的三聚化制备具有异氰脲酸酯基团的多异氰酸酯的方法, 的三聚反应,其特征在于所用的三聚催化剂是(i)碱性钠或钾化合物的1:1复合物和(ii)1,4,7,10,13-五氧杂五烷基十五烷或 1,4,7,10,13,16-六氧杂环十八烷。 本发明还涉及适合作为该方法的催化剂组分的溶液,其包含(i)碱性钠或钾化合物的1:1复合物和(ii)1,4,7,10,13-五氧杂环十五烷或1,4,7 ,溶解在极性漆溶剂中的10,13,16-六氧杂环十八烷和/或分子量范围为约32至250的至少一种化合物,其具有醇羟基并且在室温下为液体。 本发明还涉及根据本发明的方法的产物,通过异氰酸酯加聚方法生产聚氨酯,可任选地不含单体起始多异氰酸酯和/或任选地被异氰酸酯基封端剂封端的异氰酸酯组分 。