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    Process for producing blocked, urea group-containing polyisocyanates
    2.
    发明授权
    Process for producing blocked, urea group-containing polyisocyanates 失效
    制备封闭的含脲基的多异氰酸酯的方法

    公开(公告)号：US4925974A

    公开(公告)日：1990-05-15

    申请号：US245217

    申请日：1988-09-16

    申请人： Rainer Gras

    发明人： Rainer Gras

    IPC分类号： C07C275/14 ,  C07C67/00 ,  C07C239/00 ,  C07D251/34 ,  C08G18/78 ,  C08G18/80

    CPC分类号： C08G18/7825 ,  C07D251/34 ,  C08G18/8038 ,  C08G18/8061 ,  C08G2150/20

    摘要： A process for the production of a blocked urea group-containing polyisocyanate from a partially blocked polyisocyanate and polyamine, comprising the steps of:(i) reacting a partially blocked polyisocyanate, said polyisocyanate being made substantially free of monomeric polyisocyanate, by vacuum thin layer evaporation with a primary polyamine, secondary polyamine, or mixtures thereof, in relative proportions such that the ratio of isocyanate groups to amino groups is in the range from about 1:1 to 1.3:1, and(ii) isolating said urea group-containing polyisocyanate by wherein the vacuum boiling point of said polyisocyanate is lower than the deblocking temperature of said urea group-containing polyisocyanate.

    摘要翻译： 一种从部分封闭的聚异氰酸酯和多胺制备含封端的脲基多异氰酸酯的方法，包括以下步骤：（i）使部分封闭的多异氰酸酯，所述多异氰酸酯基本上不含单体多异氰酸酯，通过真空薄层蒸发 与主要多胺，仲多胺或其混合物以相对比例使异氰酸酯基团与氨基的比率在约1:1至1.3:1的范围内，和（ii）分离所述含脲基的多异氰酸酯 其中所述多异氰酸酯的真空沸点低于所述含脲基的多异氰酸酯的解封温度。

    Process and device for the production of a safety pane
    3.
    发明授权
    Process and device for the production of a safety pane 失效
    用于生产安全窗格的过程和设备

    公开(公告)号：US4818622A

    公开(公告)日：1989-04-04

    申请号：US819019

    申请日：1986-01-15

    申请人： Jean-Louis Bravet ,  Francois de Toytot

    发明人： Jean-Louis Bravet ,  Francois de Toytot

    IPC分类号： C03C27/12 ,  B32B17/10 ,  C08G18/00 ,  C08G18/65 ,  C08G18/66 ,  C08G18/78 ,  B05D5/06 ,  B32B27/40

    CPC分类号： C08G18/6607 ,  B32B17/1077 ,  B32B17/10926 ,  C08G18/6611 ,  C08G18/7825 ,  B32B2309/60 ,  Y10T428/31601

    摘要： Production of a safety pane comprising a sheet of glass and a polyurethane-based layer having energy-absorbent properties. The polyurethane-based layer having energy-absorbent properties is formed directly on the sheet of glass by reactive spraying of a reactive mixture of an isocyanate component having a viscosity under 5000 centipoises at 40 degrees C. and a polyalcohol component, with the isocyanate component containing at least one aliphatic or cycloaliphatic diisocyanate, or a prepolymer of these isocyanates, with the polyalcohol component containing at least one long difunctional polyalcohol having a molecular mass between 500 and 4000 and at least one short diol as a chain extending agent.

    摘要翻译： 生产包括玻璃板和具有吸收能力的聚氨酯基层的安全窗格。 具有吸收能力的聚氨酯基层通过反应性喷雾在40℃下具有5000厘泊粘度的异氰酸酯组分和多元醇组分的反应性混合物直接形成在玻璃板上，异氰酸酯组分含有 至少一种脂肪族或脂环族二异氰酸酯，或这些异氰酸酯的预聚物，多元醇成分含有至少一种分子量为500-4000的长二官能多元醇和至少一种作为扩链剂的短二醇。

    Process for the in situ production of urea group-containing isocyanates in polyols, dispersions or solutions resulting therefrom and use thereof
    4.
    发明授权
    Process for the in situ production of urea group-containing isocyanates in polyols, dispersions or solutions resulting therefrom and use thereof 失效
    用于在其中得到的多元醇，分散体或溶液中的含脲基的异氰酸酯的原位生产方法及其用途

    公开(公告)号：US4766239A

    公开(公告)日：1988-08-23

    申请号：US860938

    申请日：1986-05-08

    申请人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    发明人： Gerhard Grogler ,  Richard Kopp ,  Heinrich Hess

    IPC分类号： C08G18/00 ,  C08G18/30 ,  C08G18/32 ,  C08G18/65 ,  C08G18/78 ,  C08G18/80 ,  C08G18/10

    CPC分类号： C08G18/7825 ,  C08G18/8045

    摘要： The invention relates to a process for the in situ production of dispersions or solutions of urea group-containing aromatic isocyanates by the low temperature reaction of aromatic diisocyanates and/or polyisocyanates (the NCO groups of which preferably exhibit different reactivities) with from 0.15 to 0.4 mols of water per NCO equivalent in relatively high molecular weight polyols and in the presence of catalysts accelerating the NCO/water reaction. Such catalysts are preferably selected from peralkylaminoalkyl ethers, peralkylamino-polyalkylene ethers and/or peralkyl-polyalkylene-polyamines. The present invention also relates to the resulting metastable solutions or dispersions and to the use thereof, optionally with the further addition of relatively high and low molecular weight compounds having hydroxyl, amino or hydrazide groups and with the optional addition of other polyisocyanates in polyurethane-forming ratios for the production of polyurethanes.

    摘要翻译： 本发明涉及通过芳族二异氰酸酯和/或多异氰酸酯（其优选表现出不同的反应性的NCO基团）的低温反应原位制备含脲基的芳族异氰酸酯的分散体或溶液的方法，其中0.15至0.4 在相对高分子量的多元醇中和在加速NCO /水反应的催化剂存在下，每NCO当量的水摩尔数。 这样的催化剂优选选自全烷基氨基烷基醚，全烷基氨基 - 聚亚烷基醚和/或全烷基 - 聚亚烷基 - 多胺。 本发明还涉及得到的亚稳溶液或分散体及其用途，任选地还可加入具有羟基，氨基或酰肼基团的相对高分子量和低分子量的化合物，并且任选地在聚氨酯形成中加入其它多异氰酸酯 生产聚氨酯的比例。