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    Process for purifying polyisocyanates and the polyisocyanates thus purified
    1.
    发明授权
    Process for purifying polyisocyanates and the polyisocyanates thus purified 失效
    纯化多异氰酸酯和多异氰酸酯的方法

    公开(公告)号：US4774357A

    公开(公告)日：1988-09-27

    申请号：US638008

    申请日：1984-08-06

    申请人： Berthold Keggenhoff ,  Franz-Moritz Richter ,  Gunther Ellendt ,  Marcel Petinaux

    发明人： Berthold Keggenhoff ,  Franz-Moritz Richter ,  Gunther Ellendt ,  Marcel Petinaux

    IPC分类号： C07C265/14 ,  C07C67/00 ,  C07C241/00 ,  C07C263/20 ,  C07C265/12 ,  C08G18/72 ,  C08G18/75 ,  C09D175/00 ,  C07C143/00

    CPC分类号： C07C263/20 ,  C07C263/18

    摘要： Crude polyisocyanates are purified by extraction at a temperature from 80.degree. to 180.degree. C. to form a two-phase system. The phases are separated and the phase made up of purified polyisocyanate and solvent is cooled to a temperature which is at least 50.degree. C. below the extraction temperature. Upon cooling, a second two-phase system forms. Purified polyisocyanate containing residual solvent is recovered upon separation of these phases. Solvent in which polyisocyanate is present that is reclaimed during this process may be reused in subsequent extractions. The purified polyisocyanates have a viscosity which is lower than that of crude polyisocyanates having substantially the same isocyanate content and average functionality. These purified polyisocyanates are useful in the production of polyurethane foams and moldings as well as adhesives and coatings.

    摘要翻译： 粗多异氰酸酯通过在80℃至180℃的温度下提取而纯化以形成两相体系。 分离各相，将由纯化的多异氰酸酯和溶剂组成的相冷却至低于提取温度至少50℃的温度。 冷却时，形成第二个两相系统。 在分离这些相后，回收含有残留溶剂的纯化多异氰酸酯。 在此过程中回收的多异氰酸酯存在的溶剂可以在随后的萃取中重复使用。 纯化的多异氰酸酯的粘度低于具有基本上相同的异氰酸酯含量和平均官能度的粗多异氰酸酯的粘度。 这些纯化的多异氰酸酯可用于生产聚氨酯泡沫和模制品以及粘合剂和涂料。

    Process for the production of polyisocyanates
    2.
    发明授权
    Process for the production of polyisocyanates 失效
    多异氰酸酯的制备方法

    公开(公告)号：US4745216A

    公开(公告)日：1988-05-17

    申请号：US715716

    申请日：1985-03-25

    申请人： Berthold Keggenhoff ,  Gunther Ellendt ,  Marcel Petinaux ,  Alfred Mitschker ,  Peter M. Lange

    发明人： Berthold Keggenhoff ,  Gunther Ellendt ,  Marcel Petinaux ,  Alfred Mitschker ,  Peter M. Lange

    IPC分类号： C07C265/00 ,  C07C67/00 ,  C07C71/00 ,  C07C241/00 ,  C07C263/10 ,  C07C265/14

    CPC分类号： C07C263/10 ,  C07C263/20

    摘要： Polyisocyanates are produced by reacting a polyamide solution with a phosgene solution. After the product polyisocyanate has been recovered, the solvent or a portion of the solvent employed is treated with crosslinked polymers insoluble in the solvent which polymers contain primary and/or secondary alcoholic hydroxyl groups and/or primary and/or secondary amino groups. After treatment, the polymer and any reaction products are removed. The solvent may then be reused. Preferred solvents are chlorobenzene and o-dichlorobenzene. The preferred polymers are bead polymers or bead copolymers of (meth)acrylic acid or styrene/divinyl benzene copolymer.

    摘要翻译： 聚异氰酸酯通过聚酰胺溶液与光气溶液反应制备。 在产物多异氰酸酯已被回收之后，溶剂或所用溶剂的一部分用不溶于溶剂的交联聚合物处理，该聚合物含有伯和/或仲醇羟基和/或伯和/或仲氨基。 处理后，除去聚合物和任何反应产物。 然后可以重新使用溶剂。 优选的溶剂是氯苯和邻二氯苯。 优选的聚合物是（甲基）丙烯酸或苯乙烯/二乙烯基苯共聚物的珠粒聚合物或珠粒共聚物。

    Process for the preparation of polyisocyanates
    3.
    发明授权
    Process for the preparation of polyisocyanates 失效
    制备多异氰酸酯的方法

    公开(公告)号：US4405527A

    公开(公告)日：1983-09-20

    申请号：US397652

    申请日：1982-07-12

    申请人： Gerhard Wegener ,  Hartmut Knofel ,  Gunther Ellendt ,  Marcel Petinaux

    发明人： Gerhard Wegener ,  Hartmut Knofel ,  Gunther Ellendt ,  Marcel Petinaux

    IPC分类号： C07C265/14 ,  C07C67/00 ,  C07C241/00 ,  C07C263/10 ,  C08G18/10 ,  C08G18/76 ,  C07C118/02

    CPC分类号： C07C263/10

    摘要： Polyisocyanates are prepared by reacting a polyamine solution with a phosgene solution. Excess phosgene and hydrogen chloride formed during the reaction are removed from the reaction mixture. The solvent is subsequently removed from the reaction mixture (e.g., by evaporation and condensation) and treated with a compound containing isocyanate reactive hydrogen atoms to convert any isocyanates present into urethanes and/or ureas. The thus-treated solvent may then be reused, preferably after any urethanes and/or ureas present in the solvent have been removed.

    摘要翻译： 聚异氰酸酯通过多胺溶液与光气溶液反应来制备。 从反应混合物中除去反应过程中形成的过量光气和氯化氢。 随后将溶剂从反应混合物中除去（例如通过蒸发和缩合），并用含有异氰酸酯反应性氢原子的化合物处理以将存在的任何异氰酸酯转化成氨基甲酸酯和/或脲。 这样处理的溶剂可以重新使用，优选在溶剂中存在的任何氨基甲酸酯和/或脲之后已被去除。

    Aromatic uretdione-diisocyanate-disulphonic acids
    5.
    发明授权
    Aromatic uretdione-diisocyanate-disulphonic acids 失效
    芳香脲二酮 - 二异氰酸酯 - 二磺酸

    公开(公告)号：US4176118A

    公开(公告)日：1979-11-27

    申请号：US848969

    申请日：1977-11-07

    申请人： Marcel Petinaux ,  Dieter Dieterich ,  Peter Markusch

    发明人： Marcel Petinaux ,  Dieter Dieterich ,  Peter Markusch

    IPC分类号： C07D229/00 ,  C08G18/08 ,  C08G18/77 ,  C08G18/79 ,  C07D205/10

    CPC分类号： C07D229/00 ,  C08G18/0828 ,  C08G18/775 ,  C08G18/798

    摘要： This invention relates to new aromatic uretdione-diisocyanate-disulphonic acids, to a process for the preparation thereof and to the use thereof as components for the production of polyurethane resins. More particularly, the instant invention relates new aromatic uretdione-diisocyanate-disulphonic acids of the general formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 each represent a hydrogen, chlorine or bromine atom or a methyl, ethyl or C.sub.1 -C.sub.4 alkoxy group;x represents --O--, >C.dbd.O, >SO.sub.2, ##STR2## or --CH.dbd.CH-- wherein R.sub.7 and R.sub.8 each represent a hydrogen atom, a methyl or ethyl group or, when taken together with the carbon atom to which they are attached represent a cyclohexyl group; andn represents 0 or 1.These novel compounds are prepared by reacting a diisocyanate of general formula: ##STR3## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, n and x are as defined above with SO.sub.3 at temperatures of from -30.degree. to +100.degree. C. in anhydrous solvents which are inert towards SO.sub.3 and isocyanate groups.

    摘要翻译： 本发明涉及新的芳族脲二酮 - 二异氰酸酯 - 二磺酸，其制备方法及其作为制备聚氨酯树脂的组分的用途。 更具体地说，本发明涉及以下通式的新型芳族脲二酮 - 二异氰酸酯 - 二磺酸：其中R 1，R 2，R 3，R 4，R 5和R 6各自表示氢，氯或溴原子或甲基，乙基或 C1-C4烷氧基; x表示-O-，> C = O，> SO 2，或-CH = CH-，其中R 7和R 8各自表示氢原子，甲基或乙基，或者当与它们 附着表示环己基; 并且n表示0或1.这些新化合物通过使通式如下的二异氰酸酯反应来制备：其中R 1，R 2，R 3，R 4，R 5，R 6，n和x如上定义， 在对SO 3和异氰酸酯基团呈惰性的无水溶剂中30℃至+ 100℃。