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153 条记录 (耗时 0.042 秒)

    Recyclable thermoplastics foam of high glass temperature
    61.
    发明授权
    Recyclable thermoplastics foam of high glass temperature 失效
    可回收的热塑性塑料泡沫玻璃温度高

    公开(公告)号：US5300543A

    公开(公告)日：1994-04-05

    申请号：US127724

    申请日：1993-09-28

    申请人： Wolfgang Ebert ,  Jurgen Kirsch ,  Burkhard Kohler ,  Wolfgang Beer ,  Siegfried Anders ,  Rolf Dhein

    发明人： Wolfgang Ebert ,  Jurgen Kirsch ,  Burkhard Kohler ,  Wolfgang Beer ,  Siegfried Anders ,  Rolf Dhein

    IPC分类号： B29C44/00 ,  B29K69/00 ,  B29K105/04 ,  C08J9/06 ,  C08J9/12 ,  C08K3/00 ,  C08K3/20 ,  C08K3/24 ,  C08K5/00 ,  C08K5/09 ,  C08L67/00 ,  C08L69/00

    CPC分类号： C08J9/12

    摘要： A thermoplastic molding composition suitable for the preparation of foam is disclosed. The composition comprises a thermoplastic resinous component and a foaming agent which includes A) (i) 0.01 to 4.8% alumina hydrate (aluminum hydroxide) in combination with (ii) 0.01 to 4.8% of an acidic additive or B) 0.01 to 4.8% of the reaction product of said (i) and said (ii), the percentages being relative to the weight of the composition to be foamed. The invention is based on the finding that the foaming of the composition does not lead to any significant reduction in molecular weight of the resinous component or to troublesome discoloration of the foam, even during its re-extrusion.

    摘要翻译： 公开了一种适于制备泡沫的热塑性模塑组合物。 该组合物包含热塑性树脂组分和发泡剂，其包括A）（i）0.01至4.8％的氧化铝水合物（氢氧化铝）与（ii）0.01至4.8％的酸性添加剂的组合，或B）0.01至4.8％的 所述（i）和所述（ii）的反应产物的百分比相对于要发泡的组合物的重量。 本发明基于以下发现：组合物的发泡不会导致树脂组分的分子量的任何显着降低，或者即使在其再挤出期间泡沫的麻烦变色。

    Water soluble or dispersible blocked polyisocyanates and a process for their preparation and use
    66.
    发明授权
    Water soluble or dispersible blocked polyisocyanates and a process for their preparation and use 失效
    水溶性或分散性封端多异氰酸酯及其制备和使用方法

    公开(公告)号：US4895921A

    公开(公告)日：1990-01-23

    申请号：US253179

    申请日：1988-10-04

    申请人： Walter Schafer ,  Hanns P. Muller ,  Rolf Dhein

    发明人： Walter Schafer ,  Hanns P. Muller ,  Rolf Dhein

    IPC分类号： C07C275/54 ,  C07C273/18 ,  C07C275/00 ,  C07D251/34 ,  C08G18/08 ,  C08G18/62 ,  C08G18/78 ,  C08G18/79 ,  C08G18/80

    CPC分类号： C07D251/34 ,  C08G18/0819 ,  C08G18/6216 ,  C08G18/7818 ,  C08G18/791 ,  C08G18/8061 ,  C08G18/807

    摘要： The present invention is directed to water soluble or dispersible blocked polyisocyanates which contain(a) a statistical average per molecule of at least one structural unit corresponding to the formula:B--CO--NH-- wherein B denotes a group obtainable by removal of the acidic hydrogen atom from a monofunctional blocking agent for organic isocyanates and(b) structural units corresponding to the formula ##STR1## in a quantity sufficient to ensure the solubility or dispersibility of the blocked polyisocyanate in water,the blocked polyisocyanates containing on statistical average a total of at least two structural units corresponding to the formulae (a) and (b) per molecule.The present invention also relates to a process for the preparation of these blocked polyisocyanates and to their use in combination with water soluble or dispersible organic compounds containing at least two isocyanate-reactive groups for the production of coated substrates which are cured by heating.

    摘要翻译： 本发明涉及水溶性或分散性封端多异氰酸酯，其含有（a）每分子至少一个对应于下式的结构单元的统计平均数：B-CO-NH-，其中B表示可通过除去酸 来自用于有机异氰酸酯的单官能封端剂的氢原子和（b）对应于式“IMAGE”的结构单元，其量足以确保封端多异氰酸酯在水中的溶解度或分散性，所述封闭多异氰酸酯含有统计学上的平均值 每个分子对应于式（a）和（b）的至少两个结构单元。 本发明还涉及一种制备这些封端多异氰酸酯的方法，以及它们与含有至少两个异氰酸酯反应性基团的水溶性或分散性有机化合物的组合用于生产通过加热固化的涂覆基材的用途。