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公开(公告)号:US5453109A
公开(公告)日:1995-09-26
申请号:US274428
申请日:1994-07-13
申请人: Peter Schalke , Eberhard Mueller , Matthias Kremer , Georg Wahl
发明人: Peter Schalke , Eberhard Mueller , Matthias Kremer , Georg Wahl
摘要: A method for the preparation of a salt mixture useful for hardening steel parts, including of potassium cyanate, potassium carbonate and sodium carbonate, wherein 2.2 to 2.3 moles of urea is first reacted with 1 mole of potassium carbonate to form potassium cyanate. The escaping ammonia is converted with formaldehyde into hexamethylenetetramine. The reaction product, which is potassium cyanate and potassium carbonate, is ground, mixed with powdered sodium carbonate and pressed at between 80.degree. and 230.degree. C. into shaped pieces.
摘要翻译: 制备用于硬化钢部件(包括氰酸钾,碳酸钾和碳酸钠)的盐混合物的方法,其中2.2至2.3摩尔的尿素首先与1摩尔碳酸钾反应以形成氰酸钾。 逸出的氨被甲醛转化成六亚甲基四胺。 将氰酸钾和碳酸钾的反应产物研磨,与碳酸钠粉末混合并在80℃和230℃之间压制成成型片。
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公开(公告)号:US4542240A
公开(公告)日:1985-09-17
申请号:US237728
申请日:1981-02-24
申请人: Peter Schalke , Langer Manfred , Klaus Huthmacher
发明人: Peter Schalke , Langer Manfred , Klaus Huthmacher
IPC分类号: C07C279/02 , C07C67/00 , C07C239/00 , C07C277/00 , C07C279/14 , C07C128/00
CPC分类号: C07C277/00
摘要: Guanidine hydrochloride is produced from cyanogen chloride in a new manner. The cyanogen chloride is reacted with ammonia in the absence of a solvent at a temperature of about 140.degree. to 220.degree. C. It is advantageous to add an ammonium salt at the beginning of the reaction and to use ammonia in at least stoichiometrical amounts.
摘要翻译: 胍盐酸盐以新的方式由氯化氰生产。 在约140-220℃的温度下,氯化氰在不存在溶剂的情况下与氨反应。在反应开始时加入铵盐并以至少化学计量的量使用氨是有利的。
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公开(公告)号:US4369322A
公开(公告)日:1983-01-18
申请号:US241836
申请日:1981-03-09
申请人: Peter Schalke , Axel Kleemann
发明人: Peter Schalke , Axel Kleemann
IPC分类号: C07C255/00 , C07B31/00 , C07B43/08 , C07C67/00 , C07C253/00 , C07C255/32 , C07C255/33 , C07C255/36 , C07C255/37 , C07C255/53 , C07D213/57 , C07D213/61 , C07D213/84 , C07D333/24 , C07D333/38 , C07C120/00 , C07C121/66 , C07C121/68
CPC分类号: C07C253/04 , C07D213/57 , C07D333/24
摘要: The known synthesis for the production of aromatic substituted acetonitriles by reaction of aromatic substances with cyanogen chloride in the gas phase is improved by feeding the starting materials in gaseous form and separated from each other into the reactor. The process can be used to synthesize in general aromatic and especially hetero-aromatic substituted acetonitrile.
摘要翻译: 芳族物质与氯化氰在气相中的反应生产芳族取代的乙腈的已知合成通过将原料以气态形式供入反应器而得到改善。 该方法可用于合成通常的芳族和特别是杂芳族取代的乙腈。
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公开(公告)号:US4222956A
公开(公告)日:1980-09-16
申请号:US12133
申请日:1979-02-14
申请人: Axel Kleemann , Peter Schalke , Detlef Arnoldi
发明人: Axel Kleemann , Peter Schalke , Detlef Arnoldi
IPC分类号: C07C255/19 , C07C20060101 , C07C67/00 , C07C253/00 , C07C120/00 , C07C121/407
CPC分类号: C07C255/00
摘要: Cyanocarboxylic acids are prepared by reacting halocarboxylic acids with cyanohydrins, preferably at a pH of 9 to 11.
摘要翻译: 氰基羧酸通过卤代羧酸与氰醇反应制备,优选在9至11的pH下进行。
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