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73 条记录 (耗时 0.018 秒)

    Process for the preparation of low molecular weight 4,4'-diphenylmethane-uretdione-diisocyanates
    4.
    发明授权
    Process for the preparation of low molecular weight 4,4'-diphenylmethane-uretdione-diisocyanates 失效
    制备低分子量4,4'-二苯基甲烷 - 二酮二异氰酸酯的方法

    公开(公告)号：US4521338A

    公开(公告)日：1985-06-04

    申请号：US404106

    申请日：1982-08-02

    申请人： Gerhard Grogler ,  Richard Kopp

    发明人： Gerhard Grogler ,  Richard Kopp

    IPC分类号： C07B61/00 ,  C07D229/00 ,  C08G18/79

    CPC分类号： C07D229/00 ,  C08G18/798

    摘要： Low molecular weight 4,4'-diphenylmethane-uretdione-diisocyanates corresponding to the formula: ##STR1## wherein n is a number from 0 to 1,are made by dimerizing diphenylmethane-4,4'-diisocyanate at a temperature of 50.degree. C. or less in a mixture of non-polar and moderately polar solvents in the presence of a dimerization catalyst. The dimerization product may then be worked up at low temperatures (i.e., .ltoreq.50.degree. C.). The dimerization products of diphenylmethane-diisocyanate thus obtained generally have only a small amount of oligomeric uretdione-diisocyanates present. These dimerization products may be used advantageously in the synthesis of polyurethanes.

    摘要翻译： 对应于下式的低分子量4,4'-二苯基甲烷 - 脲二酮 - 二异氰酸酯：其中n为0至1的数，通过二苯基甲烷-4,4'- 二异氰酸酯在50℃或更低的温度下在非极性和中等极性溶剂的混合物中在二聚催化剂存在下进行。 然后可以在低温下（即

    Aromatic diisocyanates containing N,N-disubstituted sulfonamide groups and processes for their production
    5.
    发明授权
    Aromatic diisocyanates containing N,N-disubstituted sulfonamide groups and processes for their production 失效
    含有N，N-二取代磺酰胺基团的芳族二异氰酸酯及其制备方法

    公开(公告)号：US4496491A

    公开(公告)日：1985-01-29

    申请号：US401036

    申请日：1982-07-22

    申请人： Richard Kopp ,  Gerhard Grogler ,  Helmut Reiff ,  Dieter Dieterich

    发明人： Richard Kopp ,  Gerhard Grogler ,  Helmut Reiff ,  Dieter Dieterich

    IPC分类号： C08G18/00 ,  C07C67/00 ,  C07C241/00 ,  C07C265/14 ,  C07D295/26 ,  C08G18/77 ,  C07C119/048

    CPC分类号： C07D295/26 ,  C08G18/775

    摘要： Diisocyanates corresponding to the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 (an isocyanate-containing radical) are as defined herein are made by several processes. These diisocyanates may be made by phosgenating the diamine in which the diisocyanate is based. They may also be produced by treating the bis-urethane of the tertiary alcohol corresponding to the diisocyanate with phosgene. Such diisocyanates may also be made by treating a specific type of bis-urea with hydrogen chloride. The diisocyanates corresponding to the above-given formula are particularly useful in the production of polyurethanes having good flame-proof and mechanical properties.

    摘要翻译： 其中R 1，R 2，R 3，R 4，R 5和R 6（含异氰酸酯的基团）如本文所定义的式“IMAGE”的二异氰酸酯通过几种方法制备。 这些二异氰酸酯可以通过使二异氰酸酯所基于的二胺光气化而制成。 它们也可以通过用光气处理对应于二异氰酸酯的叔醇的双 - 氨基甲酸酯来制备。 这种二异氰酸酯也可以通过用氯化氢处理特定类型的双脲来制备。 对应于上述给定配方的二异氰酸酯特别可用于生产具有良好的阻燃和机械性能的聚氨酯。

    Process for the production of cold-setting polyurethane urea elastomers
    8.
    发明授权
    Process for the production of cold-setting polyurethane urea elastomers 失效
    生产冷凝聚氨酯脲弹性体的方法

    公开(公告)号：US4882411A

    公开(公告)日：1989-11-21

    申请号：US245877

    申请日：1988-09-16

    申请人： Gerhard Grogler ,  Andreas Ruckes ,  Heinrich Hess ,  Richard Kopp

    发明人： Gerhard Grogler ,  Andreas Ruckes ,  Heinrich Hess ,  Richard Kopp

    IPC分类号： C08G18/66 ,  C08G18/10 ,  C08G18/48 ,  C08G18/65

    CPC分类号： C08G18/4837 ,  C08G18/10

    摘要： The present invention relates to a process for the production of polyurethane urea elastomers from(a) NCO-terminated prepolymers based on polyisocyanates and polyethers having a molecular weight of 400 to about 10,000 and an ethylene oxide content of about 10 to 60 mole-% and(b) solid diaminodiphenyl ureas corresponding to the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 may be the same or different and represent hydrogen or C.sub.1 -C.sub.6 alkyl radicals and wherein the amino groups are in the m-and/or p-position to the urea group,characterized in that the NCO prepolymers are reacted with the diaminodiphenyl ureas in powder-form in a heterogeneous phase at temperatures of about 5.degree. to 40.degree. C.The present invention is also directed to the polyurethane urea elastomers prepared by this process.

    摘要翻译： 本发明涉及从（a）基于聚异氰酸酯和聚醚的分子量为400至约10,000并且环氧乙烷含量为约10至60摩尔％的NCO封端的预聚物制备聚氨酯脲弹性体的方法，以及 （b）对应于式“IMAGE”的固体二氨基二苯脲，其中R 1，R 2，R 3和R 4可以相同或不同，表示氢或C 1 -C 6烷基，并且其中氨基在m-和/或p 位置，其特征在于NCO预聚物与二氨基二苯基脲在非常相中以粉末形式在约5℃至40℃的温度下反应。本发明还涉及制备的聚氨酯脲弹性体 通过这个过程。

    Process for the production of polyurethane urea elastomers
    9.
    发明授权
    Process for the production of polyurethane urea elastomers 失效
    生产聚氨酯脲弹性体的方法

    公开(公告)号：US4882361A

    公开(公告)日：1989-11-21

    申请号：US245846

    申请日：1988-09-16

    申请人： Andreas Ruckes ,  Gerhard Grogler ,  Richard Kopp

    发明人： Andreas Ruckes ,  Gerhard Grogler ,  Richard Kopp

    IPC分类号： C08G18/65 ,  C08G18/00 ,  C08G18/08 ,  C08G18/38 ,  C08G101/00 ,  C08J9/14

    CPC分类号： C08G18/3829 ,  C08G2120/00

    摘要： The present invention is directed to a process for the production of compact or cellular, elastomeric moldings having a compact skin based on polyurethane urea elastomers prepared from(a) organic polyisocyanates,(b) relatively high molecular weight polyhydroxyl or polyamino compounds containing at least two reactive hydrogen atoms,(c) diaminodiphenyl ureas as chain-extending agents and optionally,(d) catalysts,(e) small quantities of ethylene glycol,(f) other chain-extending agents and/or cross-linking agents,(g) blowing agents and(h) auxiliaries and/or additives, which is characterized in that the chain-extending agents (c) are diaminodiphenyl ureas corresponding to formula I ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 may be the same or different and represent hydrogen or a C.sub.1 -C.sub.6 alkyl radical and wherein the NH.sub.2 groups are in the m- and/or p-position to the urea group.The present invention is also directed to the RIM elastomers produced by this process.

    摘要翻译： 本发明涉及一种生产紧凑型或细胞型弹性体模制品的方法，其具有基于由（a）有机多异氰酸酯制备的聚氨酯脲弹性体的紧密表皮，（b）相对高分子量的多羟基或聚氨基化合物，其含有至少两个 反应性氢原子，（c）作为扩链剂的二氨基二苯基脲和任选的（d）催化剂，（e）少量乙二醇，（f）其它增链剂和/或交联剂，（g） 发泡剂和（h）助剂和/或添加剂，其特征在于扩链剂（c）是对应于式I的二氨基二苯基脲（I），其中R 1，R 2，R 3和R 4可以相同 或不同的并且表示氢或C 1 -C 6烷基，并且其中NH 2基团与脲基团的m-位和/或p-位。 本发明还涉及通过该方法制备的RIM弹性体。