Manufacture of polyalkylenepolyamines
    2.
    发明授权
    Manufacture of polyalkylenepolyamines 失效
    聚亚烷基多胺的制造

    公开(公告)号:US4324724A

    公开(公告)日:1982-04-13

    申请号:US947585

    申请日:1978-10-02

    CPC分类号: C08G73/0213 C10M169/00

    摘要: A process for the manufacture of polyalkylenepolyamines by reacting a primary or secondary amine with a compound of the formula ##STR1## where X is --Cl, --Br, or --OSO.sub.3 H and R.sup.1 and R.sup.2 are H or saturated alkyl of 1 to 4 carbon atoms, and with at least the stoichiometric amount, based on the compound of the formula I, of an aqueous solution, of from 15 to 45 percent strength, of an alkali metal hydroxide or alkaline earth metal hydroxide, at from 60.degree. to 200.degree. C., cooling the reaction mixture to a temperature at which 2 aqueous phases form, and separating off the upper phase, containing polyalkylenepolyamnines. The rate of reaction can be increased by adding catalytic amounts of compounds which initiate the polymerization of alkyleneimines.

    摘要翻译: 通过使伯胺或仲胺与式(I)化合物反应制备聚亚烷基多胺的方法,其中X为-Cl,-Br或-OSO 3 H,R 1和R 2为H或饱和的烷基, 4个碳原子,并且至少具有基于式I化合物的化学计量量的水溶液,其强度为15至45%的碱金属氢氧化物或碱土金属氢氧化物,其温度为60℃至 将反应混合物冷却至形成2个水相的温度,并分离出含有聚亚烷基多胺的上层。 可以通过加入催化量的引发烯化亚胺聚合的化合物来提高反应速率。

    Spectacle frame with resilient hinges
    3.
    发明授权
    Spectacle frame with resilient hinges 失效
    具有弹性铰链的眼镜架

    公开(公告)号:US4832479A

    公开(公告)日:1989-05-23

    申请号:US108011

    申请日:1987-10-14

    IPC分类号: G02C5/22

    摘要: The front part (1) of the spectacle frame carries a body (10) embedded in synthetic resin, the body containing a spring (14) and a ball (15) and having legs (11) to form a hinge part. The other hinge part is solid with the arm (2) and carries a cam shape (7) provided with notches (8 and 9) for defining the folded and normal opening positions. A spacing (22) facing the front end of the arm makes it possible to unfold the latter beyond.

    摘要翻译: 眼镜架的前部(1)承载嵌入合成树脂的本体(10),该主体包含弹簧(14)和球(15),并且具有支脚(11)以形成铰链部分。 另一个铰链部分与臂(2)是固体的,并且具有设置有凹口(8和9)的凸轮形状(7),用于限定折叠和正常的打开位置。 面向臂的前端的间隔(22)使得可以将后者展开。

    Preparation of aminoalkyl half-esters of sulfuric acid
    8.
    发明授权
    Preparation of aminoalkyl half-esters of sulfuric acid 失效
    制备硫酸氨基烷基半酯

    公开(公告)号:US4330480A

    公开(公告)日:1982-05-18

    申请号:US231322

    申请日:1981-02-04

    IPC分类号: C07C305/06 C07C141/02

    CPC分类号: C07C305/06

    摘要: A process for the preparation of an aminoalkyl half-ester of sulfuric acid by simultaneously adding an aminoalkanol and sulfuric acid to a suspending medium, boiling at 70.degree.-150.degree. C., with vigorous mixing, distilling off the water formed during the reaction, and any water introduced with the starting materials, together with a part of the suspending medium, as an azeotrope, separating off the water from the condensed azeotrope and recycling the suspending medium, as a gas, to the reaction mixture.

    摘要翻译: 通过同时向悬浮介质中加入氨基烷基半酯的硫酸制备方法,在剧烈混合下,在70-150℃沸腾,蒸除反应中形成的水​​, 和引入原料的任何水以及悬浮介质的一部分作为共沸物,将水与冷凝的共沸物分离出来,并将悬浮介质作为气体再循环到反应混合物中。