Separation of semiconductor material
    2.
    发明授权
    Separation of semiconductor material 失效
    分离半导体材料

    公开(公告)号:US6073773A

    公开(公告)日:2000-06-13

    申请号:US410339

    申请日:1999-10-01

    CPC分类号: C01B33/02 B07B1/00 B07B1/4609

    摘要: A method and a device for the separation of semiconductor material has the separation procedure carried out on screens coated with ice made of ultrapure water, optionally mixed with particles of semiconductor material. During the separation, the screens are sprayed with ultrapure water and the screen holes are cut free.

    摘要翻译: 用于分离半导体材料的方法和装置具有在涂覆有由超纯水制成的冰的屏幕上进行的分离过程,任选地与半导体材料的颗粒混合。 在分离过程中,筛网用超纯水喷洒,筛孔无切割。

    Method for the treatment of waste containing polyamide with the reprocessing of the depolymerisation residue
    4.
    发明申请
    Method for the treatment of waste containing polyamide with the reprocessing of the depolymerisation residue 有权
    通过解聚残渣的再加工处理含有聚酰胺的废物的方法

    公开(公告)号:US20050054739A1

    公开(公告)日:2005-03-10

    申请号:US10897473

    申请日:2004-07-23

    IPC分类号: C07D201/12 C08F6/00

    CPC分类号: C07D201/12

    摘要: The invention relates to a method for the treatment of waste containing polyamide comprising a) depolymerisation of the waste containing polyamide, whereby a caprolactam raw material (6) and a flow (3), comprising the secondary constituents and additives from the depolymerisation, are obtained, and b) leaching of the flow (3) at least once using an extracting agent.

    摘要翻译: 本发明涉及一种处理含有聚酰胺的废物的方法,包括:a)含有聚酰胺的废物的解聚,由此获得包含来自解聚的第二组分和添加剂的己内酰胺原料(6)和流动物(3) ,和b)使用提取剂至少一次浸出所述流(3)。

    Method for the manufacture of caprolactam from waste containing polyamides
    6.
    发明授权
    Method for the manufacture of caprolactam from waste containing polyamides 失效
    从含有聚酰胺的废物制造己内酰胺的方法

    公开(公告)号:US07173127B2

    公开(公告)日:2007-02-06

    申请号:US10457831

    申请日:2003-06-09

    IPC分类号: C07D201/16

    CPC分类号: C07D201/12

    摘要: This invention relates to a continuous and efficient method for the manufacture of highly pure caprolactam suitable for the polycondensation of Polyamide 6 (polycaprolactam) from polyamide waste. In particular the invention relates to a method for the manufacture of caprolactam from waste containing polyamides, including the steps a) depolymerisation of the waste containing polyamides, whereby a caprolactam raw material and a flow containing secondary constituents or additives is obtained, b) at least one distillation of the caprolactam raw material, and c) at least one crystallisation of the caprolactam material obtained in step b), by which means caprolactam is obtained, whereby at least part of the caprolactam obtained in step c) with a permanganate number of

    摘要翻译: 本发明涉及用于制备适用于聚酰胺废物聚酰胺6(聚己内酰胺)缩聚的高纯度己内酰胺的连续和有效的方法。 具体地说,本发明涉及一种从含有聚酰胺的废物中制造己内酰胺的方法,包括以下步骤:a)对含有废物的聚酰胺进行解聚,由此得到己内酰胺原料和含有二级成分或添加剂的流体,b)至少 己内酰胺原料的一次蒸馏,和c)步骤b)中获得的己内酰胺材料的至少一种结晶,通过该方法获得己内酰胺,由此至少部分步骤c)中获得的己内酰胺的高锰酸盐数目< 10000秒 并且在解聚之前和/或期间,将含有<85%的UV透射率加入到含废物的聚酰胺中。