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130 条记录 (耗时 0.035 秒)

    Process for the preparation of polyisocyanates containing isocyanurate groups and their use for the preparation of isocyanate-polyaddition products
    1.
    发明授权
    Process for the preparation of polyisocyanates containing isocyanurate groups and their use for the preparation of isocyanate-polyaddition products 失效
    含有异氰脲酸酯基团的多异氰酸酯的制备方法及其制备异氰酸酯加成产物的用途

    公开(公告)号：US4499253A

    公开(公告)日：1985-02-12

    申请号：US514765

    申请日：1983-07-18

    申请人： Dimitrios Kerimis ,  Hanns P. Muller ,  Kuno Wagner

    发明人： Dimitrios Kerimis ,  Hanns P. Muller ,  Kuno Wagner

    IPC分类号： C08G18/00 ,  C08G18/02 ,  C08G18/79 ,  C08G18/18

    CPC分类号： C08G18/791

    摘要： The present invention relates to a process for the preparation of polyisocyanates containing isocyanurate groups by the trimerization of a proportion of the isocyanate groups of organic polyisocyanates and termination of the trimerization reaction by the addition of a catalyst poison, characterized in that the trimerization catalysts employed are quaternary ammonium salts based on the reaction product of tertiary amines and esters of acids of phosphorus which have an alkylating action. The invention also relates to the use of the polyisocyanates with isocyanurate groups obtainable by this process, optionally in a form freed from excess starting polyisocyanates and/or optionally in a form in which the isocyanate groups are blocked with blocking agents, as isocyanate components for the preparation of isocyanate-polyaddition products, especially polyurethanes.

    摘要翻译： 本发明涉及通过一部分有机多异氰酸酯的异氰酸酯基团的三聚和通过加入催化剂毒物终止三聚反应来制备含有异氰脲酸酯基团的多异氰酸酯的方法，其特征在于所用的三聚催化剂为 基于叔胺和具有烷基化作用的磷酸的酯的反应产物的季铵盐。 本发明还涉及多异氰酸酯与通过该方法获得的异氰脲酸酯基团的用途，任选地以不含过量起始多异氰酸酯的形式和/或任选地以异氰酸酯基团用封端剂封端的形式作为异氰酸酯组分， 制备异氰酸酯加成产物，特别是聚氨酯。

    Process for the production of low molecular weight polyhydroxyl compounds
    4.
    发明授权
    Process for the production of low molecular weight polyhydroxyl compounds 失效

    公开(公告)号：US4258222A

    公开(公告)日：1981-03-24

    申请号：US55656

    申请日：1979-07-06

    申请人： Edgar Mohring ,  Hanns P. Muller ,  Kuno Wagner

    发明人： Edgar Mohring ,  Hanns P. Muller ,  Kuno Wagner

    IPC分类号： C07C29/132 ,  B01J23/00 ,  B01J25/00 ,  C07B61/00 ,  C07C27/00 ,  C07C29/10 ,  C07C29/141 ,  C07C29/145 ,  C07C31/18 ,  C07C67/00 ,  C08G4/00 ,  C08G6/00 ,  C08G18/00 ,  C08G18/32 ,  C08G18/42 ,  C08G18/48 ,  C08G18/65 ,  C08G65/26

    CPC分类号： C08G18/3209 ,  C07C29/10 ,  C07C29/141 ,  C07C29/145 ,  C08G18/4297 ,  C08G18/4829 ,  C08G65/2606

    摘要： The instant invention is directed to a process for the production of low molecular weight polyhydric alcohols by hydrogenating formose solutions in the presence of metal catalysts comprising(a) introducing an at least 20% solution of formose, of which the pH-value was adjusted before hydrogenation to a value of from 7.5 to 12.5, in batches into a first reactor in a manner such that the content of reducible groups, determined as carbonyl groups, in the reactor does not exceed a level of 2% by weight;(b) hydrogenating the solution in batches in the presence of a total quantity of a first catalyst of from 10.sup.-4 to 5.10.sup.-2 % by weight, based on the total quantity of starting product to be reduced, the amount of said first catalyst remaining constant in the reactor, said first catalyst being selected from the group consisting of metals having atomic numbers of from 23 to 29 and mixtures thereof, said metals, being in elemental and/or oxidic form;(c) withdrawing the reaction product in batches from the first reactor after the content of reducible groups, determined as carbonyl groups, has fallen to below 1.5% by weight;(d) adjusting the pH-value of the reaction product to between 3 and 7;(e) introducing said reaction product in batches into a second reactor;(f) hydrogenating said reaction product in batches in the presence of a total quantity of a second catalyst of from 10.sup.-5 to 10.sup.-1 % by weight of active metal, based on the total quantity of starting product to be reduced, the amount of said second catalyst remaining constant in the second reactor, said second catalyst being selected from the group consisting of metals having atomic numbers of 44, 45, 75 and 77, compounds thereof, and mixtures thereof; and(g) after a residence time of from 5 minutes to 4 hours withdrawing the reaction product of the second hydrogenation stage in batches from the second reactor.

    Substantially colorless organic polyisocyanates, processes for their production and their use in the production of polyurethane plastics
    8.
    发明授权
    Substantially colorless organic polyisocyanates, processes for their production and their use in the production of polyurethane plastics 失效
    基本无色有机多异氰酸酯，其生产工艺及其在聚氨酯塑料生产中的应用

    公开(公告)号：US4639502A

    公开(公告)日：1987-01-27

    申请号：US730134

    申请日：1985-05-03

    申请人： Hanns P. Muller ,  Werner Clarenz ,  Ulrich von Gizycki ,  Kuno Wagner

    发明人： Hanns P. Muller ,  Werner Clarenz ,  Ulrich von Gizycki ,  Kuno Wagner

    IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C239/00 ,  C07C269/02 ,  C08G18/70 ,  C08G18/78 ,  C08G18/79 ,  C08K5/00 ,  C09D175/00 ,  C08G18/80

    CPC分类号： C08G18/792 ,  C08G18/70 ,  C08G18/7831 ,  C08G18/791 ,  C08K5/0041

    摘要： The present invention relates to substantially colorless organic polyisocyanates, optionally in solution in an inert solvent, having a Hazen color index according to DIN 53 409 of at most 60 and a yellow value according to DIN 6167 of at most 3.0, characterized by a content of about 0.01 to 1 ppm (by weight), based on polyisocyanate, of an organic dye soluble in the polyisocyanate and having an absorption maximum of about 560 to 590 nm or a mixture of such dyes.The present invention also relates to two processes for preparing the substantially colorless organic polyisocyanates. In the first process, the organic dye is added to the prepared polyisocyanate while in the second process the organic dye is added to the starting materials used to prepare the polyisocyanate. Finally, the present invention is directed to the production of polyisocyanate polyaddition products from the substantially colorless organic polyisocyanates and isocyanate-reactive compounds.

    摘要翻译： 本发明涉及基本上无色的有机多异氰酸酯，任选在惰性溶剂中的溶液中，根据DIN 53 409的Hazen颜色指数最多为60，根据DIN 6167的黄色值至多为3.0，其特征在于含量 约0.01至1ppm（重量），基于多异氰酸酯，可溶于多异氰酸酯的有机染料并且具有约560至590nm的吸收最大值或这些染料的混合物。 本发明还涉及制备基本上无色的有机多异氰酸酯的两种方法。 在第一种方法中，将有机染料加入到制备的多异氰酸酯中，而在第二种方法中，将有机染料加入到用于制备多异氰酸酯的原料中。 最后，本发明涉及从基本上无色的有机多异氰酸酯和异氰酸酯反应性化合物制备多异氰酸酯加聚产物。