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    • 43. 发明授权
    • Preparation of secondary amines from primary amines
    • 从伯胺制备仲胺
    • US06723880B2
    • 2004-04-20
    • US10173774
    • 2002-06-19
    • Peter NeumannJohann-Peter MelderChristoph BenischArthur HöhnJoachim Pfeffinger
    • Peter NeumannJohann-Peter MelderChristoph BenischArthur HöhnJoachim Pfeffinger
    • C07D41702
    • C07C209/64C07C211/13
    • A process for producing secondary amines of the formula R1R2N—A—NH—A—NR1R2, where R1 and R2 are linear or branched C1-20-alkyl radicals, optionally substituted with from 1 to 5 phenyl groups; or cyclohexyl radicals; or together with the nitrogen atom to which they are bound, form a 3 to 7 membered saturated ring, optionally containing further hetero atoms selected from the group consisting of N, O and S, and optionally substituted with from 1 to 5 C1-2-alkyl groups. The group A is a linear or branched C2-20-alkylene group, optionally containing from 1 to 5 phenylene groups; or a radical of the formula —CH(R3)—[CH2]k—X—[CH(R3)—[CH2]k—X]m—CH(R3)—[CH2]k—, where R3 is H or CH3, X is O, S or NR4, R4 is H or a linear or branched C1-4-alkyl group, k is 1 or 2, and m is an integer from 0 to 4; or a group of the formula where n, o, p, and q are, independently, integers from 1 to 4. In this process, primary amines of the formula R1R2N—A—NH2 are reacted in the presence of hydrogen and a catalyst comprising at least one element or compound of an element of groups VIII and IB of the Periodic Table, preferably group IB, and in particular, Cu. Through this process, a high selectivity of the desired amines can be achieved.
    • 一种制备式R 1 R 2 NA-NH-A-NR 1 R 2的仲胺的方法,其中R 1和R 2是直链或支链C 1-20 - 任选被1至5个苯基取代的烷基; 或环己基; 或与其结合的氮原子一起形成3至7元饱和环,任选地含有选自N,O和S的另外的杂原子,并且任选被1至5个C 1-2 - 烷基。 基团A是任选含有1至5个亚苯基的直链或支链C 2-20 - 亚烷基; 或式-CH(R 3) - [CH 2] k X- [CH(R 3) - [CH 2] k X] m -CH(R 3) - [CH 2] k - 的基团, 其中R 3是H或CH 3,X是O,S或NR 4,R 4是H或直链或支链C 1-4 - 烷基,k是1或2,m是整数 从0到4; 或一组式n,o,p和q独立地为1至4的整数。在该方法中,式R 1 R 2 NA-NH 2的伯胺在存在下反应 氢和包含元素周期表第VIII和IB族元素的至少一种元素或化合物的催化剂,优选IB族,特别是Cu。 通过该方法,可以实现所需胺的高选择性。
    • 45. 发明授权
    • Double closing unit for an injection moulding machine
    • 注塑机双关闭装置
    • US5714180A
    • 1998-02-03
    • US578605
    • 1996-01-05
    • Alfred LamplPeter Neumann
    • Alfred LamplPeter Neumann
    • B29C45/12B29C45/67
    • B29C45/12
    • Double closing unit of an injection molding machine has a pair of movable mold mounting plates and a stationary mold mounting plate having a pair of stationary mold faces, aligned between the pair of movable mold mounting plates. Two pairs of bar members and a pair of locking units are provided so that each locking unit couples one of the pair of movable mold mounting plates to one of the pairs of bar members. A pair of pressure cushion systems located in the stationary mold mounting plate are each connected to one of the pair of movable mold mounting plates, the pair of pressure cushion systems being independent of each other. At least one pair of fast-motion cylinders is also provided, at least one cylinder being connected between each movable mold mounting plate and the stationary mold mounting plate. The cylinders hold one of the movable mold mounting plates in a closed position when the other movable mold mounting plate is in an open position.
    • PCT No.PCT / AT94 / 00136 Sec。 371日期1996年1月5日 102(e)日期1996年1月5日PCT 1994年9月23日PCT公布。 公开号WO95 / 08428 日期1995年3月30日注塑机的双闭合单元具有一对可移动模具安装板和固定模具安装板,该固定模具安装板具有在一对可移动模具安装板之间对准的一对固定模具面。 提供两对杆构件和一对锁定单元,使得每个锁定单元将一对可移动模具安装板中的一个连接到一对杆构件中的一个。 位于固定模具安装板中的一对压力缓冲系统各自连接到一对可移动模具安装板中的一个,所述一对压力缓冲系统彼此独立。 还设置有至少一对快速运动气缸,至少一个气缸连接在每个活动模具安装板和固定模具安装板之间。 当另一个可移动的模具安装板处于打开位置时,气缸将一个可移动的模具安装板保持在关闭位置。