会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 109. 发明授权
    • Process for producing caprolactam through hydrolytic cleavage of molten
polycaprolactam
    • 通过熔融聚己内酰胺的水解裂解生产己内酰胺的方法
    • US5495015A
    • 1996-02-27
    • US355286
    • 1994-12-12
    • Peter BasslerMichael Kopietz
    • Peter BasslerMichael Kopietz
    • B03B9/06C07D201/12C08J11/14
    • C07D201/12
    • Caprolactam is obtained from caprolactam-containing polymers in the presence of superheated water by bringing polymers which contain the repeating unit--[--N(H)--(CH.sub.2).sub.5 --C(O)--]--or mixtures consisting essentially of______________________________________from 40 to 99.9% by weight of a polymer containing the repeat- ing unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--,from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 60% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,______________________________________into contact with superheated water at from 280.degree. to 320.degree. C. and from 7.5 to 15 MPa and a weight ratio of water to polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]-- of from 5:1 to 13:1 and in a reaction time of less than 3 hours, with the proviso that the reaction mixture, consisting essentially of water and the polymer used or the mixture used, contains no gaseous phase under the conditions of the hydrolysis.
    • 在过热水存在下,通过使含有重复单元 - [ - N(H) - (CH 2)5 -C(O) - ] - 的聚合物或由基本上由40组成的混合物 至99.9重量%的含有重复单元的聚合物 - [-N(H) - (CH 2)5 -C(O) - ] - , - 0.01-50重量% - 由无机填料,有机和无机颜料和染料组成, - 0至10重量%的有机和/或无机添加剂, - 0至40重量%的非聚酰胺含聚合物和 - 0至60重量%的聚酰胺,除了由己内酰胺制备的聚己内酰胺和共聚酰胺与280℃至320℃和7.5至15MPa的过热水接触,并且水与 含有重复单元的聚合物 - [ - N(H) - (CH2)5-C(O) - ] - 为5:1至13:1,反应时间小于3小时,条件是 反应mi 主要由水组成,所使用的聚合物或所使用的混合物在水解条件下不含气相。