公开(公告)号：US4366324A

公开(公告)日：1982-12-28

申请号：US322552

申请日：1981-11-18

申请人： Kiichi Habata ,  Kesazi Ichikawa ,  Mutsuo Shimizu

发明人： Kiichi Habata ,  Kesazi Ichikawa ,  Mutsuo Shimizu

IPC分类号： C07C17/16 ,  C07C17/00 ,  C07C19/03 ,  C07C67/00 ,  C07F7/08 ,  C07F7/18 ,  C08G77/06

CPC分类号： C08G77/06

摘要： The invention provides a novel continuous process for concurrently producing methyl chloride and organosiloxanes by the reaction of an organochlorosilane and methyl alcohol in an aqueous reaction medium at 70.degree. to 150.degree. C. Different from conventional processes, the aqueous reaction medium contains no catalyst so that the problems inherent to the use of a large amount of a catalyst can be avoided. In the inventive process, the feed rates of the reactants are controlled so as to keep the concentration of hydrogen chloride in the aqueous reaction medium not to exceed the azeotropic concentration thereof at the temperature and under the pressure of operation. These conditions are critical to reduce the loss of hydrogen chloride by dissipation into the gaseous phase resulting in a remarkably high yield of methyl chloride from the standpoint of both the conversion of chlorine content and the space-time yield of the reaction vessel. The inventive process is advantageous also in the excellent quality of the organosiloxane product and markedly decreased formation of dimethyl ether as an undesirable by-product.

摘要翻译： 本发明提供了一种通过有机氯硅烷和甲醇在70至150℃的水性反应介质中同时生产甲基氯和有机硅氧烷的新型连续方法。与常规方法不同，反应介质中不含催化剂，因此 可以避免使用大量催化剂所固有的问题。 在本发明的方法中，控制反应物的进料速率，以便在温度和操作压力下使氯化氢在水性反应介质中的浓度不超过其共沸浓度。 这些条件对于通过耗散到气相中来减少氯化氢的损失是至关重要的，从氯含量的转化和反应容器的空时收率的观点来看，导致甲基氯的显着高的产率。 本发明方法在有机硅氧烷产物的优良品质方面也是有利的，并且显着降低二甲醚作为不合需要的副产物的形成。

公开(公告)号：US3983180A

公开(公告)日：1976-09-28

申请号：US511208

申请日：1974-10-02

申请人： Kiichi Habata ,  Shozo Tanaka ,  Hitoyuki Araki

发明人： Kiichi Habata ,  Shozo Tanaka ,  Hitoyuki Araki

IPC分类号： C07C17/00 ,  C07C17/16 ,  C07C17/38 ,  C07C17/383 ,  C07C19/03 ,  C07C67/00

CPC分类号： C07C19/03 ,  C07C17/16 ,  C07C17/38

摘要： A process for preparing methyl chloride by reacting hydrogen chloride with methanol in the liquid-phase non-catalytic reaction, employing a reaction system comprising a reactor and two distillation columns, each being operated under a different pressure, to greatly increase the space time yield and the conversion of hydrogen chloride and methanol, and at the same time to reduce the production of dimethyl ether as a byproduct. The raw materials used may be either gaseous or liquid; they may contain a large amount of water or gases insoluble in water. By this process, hydrogen chloride gas and diluted hydrochloric acid that are produced as a byproduct or waste in various chemical processes can be effectively utilized.

摘要翻译： 一种在液相非催化反应中使氯化氢与甲醇反应制备氯甲烷的方法，采用包含反应器和两个蒸馏塔的反应体系，每个蒸馏塔在不同的压力下操作，大大增加了空间产率和 氯化氢和甲醇的转化，同时减少二甲醚作为副产物的生产。 使用的原料可以是气体或液体; 它们可能含有大量不溶于水的水或气体。 通过该方法，可以有效地利用作为副产物或废弃物在各种化学过程中产生的氯化氢气体和稀盐酸。