Process for the manufacture of cellular plastics from polyamides
    1.
    发明授权
    Process for the manufacture of cellular plastics from polyamides 失效
    从聚氨酯制造细胞塑料的方法

    公开(公告)号:US3770669A

    公开(公告)日:1973-11-06

    申请号:US3770669D

    申请日:1972-04-14

    申请人: HOECHST AG

    摘要: THERE IS DISCLOSED AND CLAIMED A PROCESS FOR THE PRODUCTION OF CELLULAR PLASTICS FROM POLYAMIDES, WHICH EXHIBIT MELTING RANGES NEAR TO OR ABOVE THEIR DECOMPOSITION TEMPERATURES OR POOR OR NO SOLUBILITY AT ALL IN SOLVENTS OR WHICH EXHIBIT BOTH OF THESE PROPERTIES AT THE SAME TIME, THE PROCESS WHICH COMPRISES PROCESSING POLYAMIDES CARRYING SUBSTITUENTS AT THE AMIDE NITROGEN, FROM THE MELT OR FROM THE SOLUTION AND SPLITTING-OFF PARTIALLY OR TOTALLY THE N-SUBSTITUENTS TO YIELD CELLULAR PLASTICS BY THE FOAMING ACTION OF THE UNSATURATED COMPOUNDS WHICH ORIGINATE FROM THE N-SUBSTITUENTS DURING THE SPLITTING-OFF PROCESS. THIS FOAMING ACTION IS AUGMENTED BY ADDITIONALLY USING FOAMING OR EXPANDING AGENTS AND/OR REDUCING THE PRESSURE DURING THE SPLITTING-OFF PROCESS.

    Process for the preparation of shaped articles from polyamides
    3.
    发明授权
    Process for the preparation of shaped articles from polyamides 失效
    从聚酰胺制备形状文章的过程

    公开(公告)号:US3792148A

    公开(公告)日:1974-02-12

    申请号:US3792148D

    申请日:1972-04-14

    申请人: HOECHST AG

    IPC分类号: C08G69/48 B29C25/00

    CPC分类号: C08G69/48

    摘要: THERE IS DISCLOSED AND CLAIMED A PROCESS FOR THE PRODUCTION OF SHAPED ARTICLES FROM POLYAMIDES WHICH EXHIBIT MELTING RANGES NEAR TO OR ABOVE DECOMPOSTION TEMPERATURES OR POOR OR NO SOLUBILITY AT ALL IN SOLVENTS OR WHICH XHIBIT BOTH OF THESE PROPERTIES AT THE SAME TIME, THE PROCESS WHICH COMPRISES MOULDING POLYAMIDES CARRYING SUBSTITUENTS OF THE AMIDE NITROGEN AND THUS HAVING REDUCED MELTING RANGES AND/OR IMPROVED SOLUBILITY IN SOLVENTS, AND SEPARATING (SPLITTING-OFF) SAID SUBSTITUENTS PARTIALLY PR TOTALLY DURING AND/OR AFTER MOULDING.

    Block copolyesters consisting essentially of linear saturated polyester and polystyrene-butadiene units
    5.
    发明授权
    Block copolyesters consisting essentially of linear saturated polyester and polystyrene-butadiene units 失效
    基于线性饱和聚酯和聚苯乙烯 - 丁二烯单元的嵌段共聚物

    公开(公告)号:US3723574A

    公开(公告)日:1973-03-27

    申请号:US3723574D

    申请日:1971-01-22

    申请人: HOECHST AG

    发明人: BRINKMANN L HERWIG W

    IPC分类号: C08G63/52 C08G39/10

    CPC分类号: C08G63/52

    摘要: Thermoplastic block copolyesters comprising linear saturated polyesters and polystyrene-butadiene units which can be moulded into shaped articles having a high dimensional stability, impact strength and bending strength.

    摘要翻译: 包括线性饱和聚酯和聚苯乙烯 - 丁二烯单元的热塑性嵌段共聚酯,其可以模塑成具有高尺寸稳定性,冲击强度和弯曲强度的成型制品。