Switching valves
    1.
    发明授权
    Switching valves 失效
    切换阀

    公开(公告)号:US4164956A

    公开(公告)日:1979-08-21

    申请号:US770932

    申请日:1977-02-22

    IPC分类号: B29B7/80 F16K11/085 F16K11/07

    摘要: Switching valves, e.g. for a closed-type molding apparatus for manufacturing polyurethane elastomers and the like, comprising a valve body having a plurality of openings, preferably five, serving as inlet and outlet ports, and a preferably rotatable valve sleeve which serves for switching the openings without any danger of introducing any other material into the switching valve system. Connections are made between pairs of adjacent openings, one of them being cut off from communication.

    摘要翻译: 切换阀,例如 对于用于制造聚氨酯弹性体等的封闭型成型装置,包括具有多个开口的阀体,优选为五个用作入口和出口的开口,以及优选可旋转的阀套,其用于切换开口而没有任何危险 将任何其他材料引入切换阀系统。 在相邻的开口对之间形成连接,其中一个开口与通信断开。

    Process for the production of urethane elastomers
    2.
    发明授权
    Process for the production of urethane elastomers 失效
    生产聚氨酯弹性体的方法

    公开(公告)号:US4002584A

    公开(公告)日:1977-01-11

    申请号:US495097

    申请日:1974-08-05

    CPC分类号: C08G18/3814 C08G18/6529

    摘要: Urethane elastomers are prepared by reacting a long-chain polyol having a molecular weight of 400 - 5000 in a one-shot operation with an organic diisocyanate and a halogenated aromatic diamine of the general formula: ##STR1## wherein X.sub.1, X.sub.2, X.sub.3 and X.sub.4 are the same or different and each represents a halogen atom and n is zero or 1. According to this process, urethane elastomers possessing excellent physical characteristics can be produced economically and advantageously in the operations.

    摘要翻译: 氨基甲酸酯弹性体通过一次操作中分子量为400-5000的长链多元醇与有机二异氰酸酯和通式如下的卤代芳族二胺反应来制备:其中X 1,X 2,X 3和X 4 相同或不同,并且各自表示卤素原子,n表示0或1.根据该方法,可以经济地且有利地在操作中生产具有优异物理特性的氨基甲酸酯弹性体。

    Mixing apparatus
    3.
    发明授权
    Mixing apparatus 失效
    混合装置

    公开(公告)号:US4106115A

    公开(公告)日:1978-08-08

    申请号:US770933

    申请日:1977-02-22

    CPC分类号: B01F15/00025 B29B7/748

    摘要: This invention relates to a material mixing apparatus for use, for example, in the preparation of polyurethane elastomers, wherein a mixer chamber, a set of switching valves and pipelines are maintained to ensure a constantly flowing state for the materials, the apparatus being featured in that it allows to remove the mixed materials in any amount at any time yet preventing contamination of the work site, as a result of a preferably totally closed structure. Two exemplary embodiments are disclosed, having at least two material tanks and switching means, as well as an additional switching means which can serve for a liquid rinsing agent or for a mixture of the materials.

    摘要翻译: 本发明涉及一种用于例如用于制备聚氨酯弹性体的材料混合装置,其中保持混合室,一组切换阀和管道以确保材料的不断流动的状态,该装置的特征在于 它允许在任何时候以任何量去除混合材料,同时防止作为优选完全封闭结构的结果对工作场所的污染。 公开了两个示例性实施例,其具有至少两个材料罐和开关装置,以及可用于液体漂洗剂或用于混合材料的附加开关装置。