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    Process for the preparation of liquid mixtures of compounds having isocyanate groups
    1.
    发明授权
    Process for the preparation of liquid mixtures of compounds having isocyanate groups 失效
    制备具有异氰酸酯基团的化合物的液体混合物的方法

    公开(公告)号：US4357255A

    公开(公告)日：1982-11-02

    申请号：US296391

    申请日：1981-08-26

    申请人： Ingo Stemmler ,  Hanns-Peter Muller ,  Kuno Wagner

    发明人： Ingo Stemmler ,  Hanns-Peter Muller ,  Kuno Wagner

    IPC分类号： C08J11/00 ,  C08G18/10 ,  C08G18/70 ,  C08G18/82 ,  C07C119/042

    CPC分类号： C08G18/70 ,  C08G18/10

    摘要： Waste polyurethane materials are made re-usable by converting them to liquid mixtures. Such liquid mixtures are made by reacting up to 70 parts by weight of polyurethane with a low-melting polyisocyanate at 100.degree. to 250.degree. C. in the presence of a catalyst. Suitable catalysts include the acid and neutral salts, phenolates, enolates and alcoholates of a metal of the 3rd, 4th or 5th Main Group or 1st, 2nd, 4th, 7th or 8th subgroup of the Periodic System of elements. The thus-produced mixtures contain isocyanates and are suitable as an isocyanate component in the production of polyurethane plastic materials.

    摘要翻译： 废聚氨酯材料通过将它们转化为液体混合物而可重复使用。 这样的液体混合物通过在催化剂存在下，在100-250℃下使至多70重量份的聚氨酯与低熔点多异氰酸酯反应来制备。 合适的催化剂包括第3，第4或第5主要组分的金属的酸和中性盐，酚盐，烯醇化物和醇化物，或元素周期表系统的第1，第2，第4，第7或第8组。 由此制得的混合物含有异氰酸酯，并且在生产聚氨酯塑料材料时适合作为异氰酸酯组分。

    Process for the preparation of polyisocyanates containing isocyanurate groups and their use in the production of polyurethanes
    2.
    发明授权
    Process for the preparation of polyisocyanates containing isocyanurate groups and their use in the production of polyurethanes 失效
    用于制备含有异氰脲酸酯基团的多异氰酸酯的方法及其在生产聚氨酯中的用途

    公开(公告)号：US4379905A

    公开(公告)日：1983-04-12

    申请号：US337344

    申请日：1982-01-06

    申请人： Ingo Stemmler ,  Hanns P. Muller ,  Kuno Wagner

    发明人： Ingo Stemmler ,  Hanns P. Muller ,  Kuno Wagner

    IPC分类号： C08G18/00 ,  C07D251/34 ,  C08G18/02 ,  C08G18/22 ,  C08G18/79 ,  C08G18/77

    CPC分类号： C07D251/34 ,  C08G18/791

    摘要： The subject of the invention is a process for the preparation of polyisocyanates containing isocyanurate groups which comprises trimerizing a proportion of the isocyanate groups of organic polyisocyanates or mixtures of di- and monoisocyanates in the presence of basic alkali metal compounds as catalysts and terminating the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalysts are complexes of(i) basic alkalimetal compounds and(ii) acyclic organic compounds which(a) have at least 6 alkylene oxide units of the formula --R--O--, wherein R represents C.sub.1 -C.sub.4 -alkylene, in the form of one or more polyether chains with only those chains having at least three alkylene oxide units being counted to achieve the total of at least 6 alkylene oxide units(b) contain a total of at least about 40% by weight of alkylene oxide units, the alkylene oxide units of any chains containing less than three of these units not being counted as alkylene oxide units, and(c) have a molecular weight of at least about 282.The invention also relates to the use of the process products according to the invention, optionally freed from excess starting polyisocyanates and/or optionally blocked with blocking agents for isocyanate groups, as an isocyanate component for the production of polyurethanes by the isocyanate polyaddition process.

    摘要翻译： 本发明的主题是制备含有异氰脲酸酯基团的多异氰酸酯的方法，其包括在碱性碱金属化合物作为催化剂的存在下将一部分有机多异氰酸酯的异氰酸酯基团或二异氰酸酯和单异氰酸酯的混合物三聚，并终止三聚反应 其特征在于三聚催化剂是（i）碱性碱金属化合物和（ii）无环有机化合物的复合物，其中（a）具有至少6个式-RO-的环氧烷单元，其中R 代表一个或多个聚醚链形式的C 1 -C 4 - 亚烷基，只有那些具有至少3个烯化氧单元的那些链被计数以达到总共至少6个氧化烯单元（b），总共包含至少约 40重量％的环氧烷单元，含有少于3个这些单元的任何链的烯化氧单元不被计为环氧烷 单元，和（c）具有至少约282的分子量。本发明还涉及根据本发明的方法产物的使用，任选地不含过量起始多异氰酸酯和/或任选地用异氰酸酯基团封闭剂封闭， 作为通过异氰酸酯加聚方法生产聚氨酯的异氰酸酯组分。