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
    • 1. 发明申请
    • Mold Device and Method of Manufacturing Cylinder Block
    • 模具装置及其制造方法
    • US20080274289A1
    • 2008-11-06
    • US11630034
    • 2005-04-25
    • Akira SakuraiHajime MiyasakaYoshimichi AsaiHiroyuki OhashiKazumi Nagao
    • Akira SakuraiHajime MiyasakaYoshimichi AsaiHiroyuki OhashiKazumi Nagao
    • B05D3/00B22D29/00B22D45/00
    • B22C9/103B22C9/24B22D15/02B22D15/04
    • A mold device and a method of manufacturing a cylinder block. The mold device comprises a split core having two first split cores formed so that the tip parts thereof may be in a tapering shape, two second split cores installed between the first spilt cores, and an inner core is installed at the center part and pushing out the first split cores in the direction receding from the center axis thereof. When the inner core is pushed out to push out and position the first spilt cores, both end parts of the second split cores are brought into contact with the tip parts of the adjacent first split cores, and the outer side-faces of the first split cores and the outer side-faces of the second split cores form a cylindrical shape. When the inner core is raised, the first split cores and the second split cores are pulled to the axial center by first engagement pieces and second engagement pieces.
    • 一种模具装置及其制造方法。 该模具装置包括具有两个第一分裂芯的分裂芯,该第一分裂芯形成为使得其尖端部分可以是锥形,安装在第一溢出芯之间的两个第二分裂芯和内芯安装在中心部分并推出 第一分裂芯沿着从其中心轴线退出的方向。 当内芯被推出以推出并定位第一溢出芯时,第二分裂芯的两个端部与相邻的第一分裂芯的尖端部分接触,并且第一分离芯的外侧面 芯部和第二分割芯部的外侧面形成圆筒状。 当内芯升高时,通过第一接合件和第二接合件将第一分离芯和第二分离芯拉到轴向中心。
    • 8. 发明授权
    • Recovery process for producing purified methacrylonitrile
    • 用于生产纯化的甲基丙烯腈的回收方法
    • US4599145A
    • 1986-07-08
    • US505967
    • 1983-06-20
    • Kiyoshi KawakamiHiroyuki OhashiTsutomu Katsumata
    • Kiyoshi KawakamiHiroyuki OhashiTsutomu Katsumata
    • C07C255/08B01D3/00C07C67/00C07C253/00
    • C07C253/34Y10S203/03Y10S203/20
    • Methacrylonitrile higher in purity than that obtained by the conventional process is efficiently produced by the present improved process for producing purified methacrylonitrile in which the reaction mixture formed by the ammoxidation of isobutylene or tert-butyl alcohol is distilled using water as solvent to obtain a crude methacrylonitrile solution which contains methacrylonitrile as major constituent, methacrolein, hydrogen cyanide, and isobutyronitrile, and the crude methacrylonitrile solution is then purified in a product column, wherein the improvement comprises first removing isobutyronitrile from said crude solution, then feeding the remaining solution to the product column, withdrawing from the top a vapor containing methacrolein, condensing the vapor, returning a greater part of the condensate to the product column while removing the remainder from the distillation system, and withdrawing purified methacrylonitrile from the middle or lower section, preferably from a point lower than the feeding stage.
    • 通过本发明改进的纯化的甲基丙烯腈的改进方法,可以有效地制备纯度高于常规方法的甲基丙烯腈,其中通过使用水作为溶剂蒸馏异丁烯或叔丁醇的氨氧化形成的反应混合物,得到粗制甲基丙烯腈 包含甲基丙烯腈作为主要成分的溶液,甲基丙烯醛,氰化氢和异丁腈,然后在产物柱中纯化粗制甲基丙烯腈溶液,其中改进包括首先从所述粗溶液中除去异丁腈,然后将剩余的溶液进料到产物柱 从顶部排出含有甲基丙烯醛的蒸汽,冷凝蒸气,将大部分冷凝物返回到产物柱中,同时从蒸馏系统中除去剩余物,并从中部或下部取出纯化的甲基丙烯腈,优选从点 比喂养阶段要好