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公开(公告)号：US5649322A
公开(公告)日：1997-07-15
申请号：US571625
申请日：1995-12-11
IPC分类号： C07C201/04 , C07C203/00 , C07C203/02
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.4 -Alkyl nitrites can be prepared by reaction of C.sub.1 -C.sub.4 -alkanols with nitrogen oxides with the participation of oxygen in a reactor designed as a scrubber column, nitrogen oxides having a proportion of more than 50% of NO of the total amount of gram atoms of N of the nitrogen oxides, oxygen and optionally inert gas being fed into the lower part of the reactor. 5 to 60% of the total amount of C.sub.1 -C.sub.4 -alkanol used is likewise fed into the lower part of the reactor in vaporous or atomized form, while the remaining C.sub.1 -C.sub.4 -alkanol is delivered to the column head.
摘要翻译： C1-C4烷基亚硝酸盐可以通过在设计为洗涤塔的反应器中将C1-C4-链烷醇与氮氧化物反应而制备，氧化反应设计为总量超过NO的50％ 的氮原子的氮原子的克原子，氧和任选的惰性气体被供给到反应器的下部。 使用的C 1 -C 4烷醇的总量的5-60％同样以蒸气或雾化的形式进料到反应器的下部，而剩余的C1-C4-链烷醇被输送到塔头。
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公开(公告)号：US5744663A
公开(公告)日：1998-04-28
申请号：US676027
申请日：1996-07-05
CPC分类号： C07C17/08
摘要： It has been found that cyclopentene and hydrogen bromide can be continuously reacted in a simple manner to give cyclopentyl bromide in good yields and good selectivities if the reaction is carried out in the presence of a heterogeneous catalyst. The reaction can be carried out continuously and unreacted cyclopentene and possibly other constituents can be recirculated to the reaction.
摘要翻译： 已经发现，如果反应在非均相催化剂存在下进行，环戊烯和溴化氢可以以简单的方式连续反应得到环戊基溴，产率高，选择性好。 反应可以连续进行，未反应的环戊烯和可能的其它组分可以再循环到反应中。
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公开(公告)号：US5412147A
公开(公告)日：1995-05-02
申请号：US157779
申请日：1993-11-24
IPC分类号： C07C201/04 , C07C203/00
CPC分类号： C07C201/04
摘要： C.sub.1 -C.sub.6 -Alkyl nitrites can be prepared by reacting nitrogen dioxide with C.sub.1 -C.sub.6 -alcohols, by, in a counterflow-operated column, feeding the alcohol or an alcohol/water mixture into the upper part of the column and the nitrogen dioxide or a nitrogen dioxide/inert gas mixture into the lower part of the column. The resulting alkyl nitrite is removed from the column as the top product and the co-formed nitric acid is removed from the column as the bottom product.
摘要翻译： C 1 -C 6烷基亚硝酸盐可以通过使二氧化氮与C 1 -C 6醇反应来制备，在逆流操作的塔中，将醇或醇/水混合物进料到塔的上部和二氧化氮或 二氧化氮/惰性气体混合物进入塔的下部。 所得到的亚硝酸烷基酯作为顶部产物从塔中除去，共同形成的硝酸作为底部产物从塔中除去。
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公开(公告)号：US5562887A
公开(公告)日：1996-10-08
申请号：US336365
申请日：1994-11-08
摘要： Alkyl nitrite-containing exhaust gases are purified in continuous form by treating them with equimolar to excess amidosulphuric acid in the form of an aqueous solution in the manner of a counter-current scrubbing at a temperature of 0.degree.-100.degree. C.
摘要翻译： 含有亚烷基亚烷基的废气通过在0℃-100℃的温度下以逆流洗涤的方式以等摩尔至过量的酰胺硫酸的水溶液的形式，以连续的形式进行纯化。
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公开(公告)号：US5543548A
公开(公告)日：1996-08-06
申请号：US273548
申请日：1994-07-11
IPC分类号： C07B61/00 , C07C31/04 , C07C68/00 , C07C68/08 , C07C69/96 , C07C201/04 , C07C203/00
CPC分类号： C07C68/00
摘要： Dimethyl carbonate (DMC) is prepared by continuous gas reaction of carbon monoxide and methyl nitrite a heterogeneous catalyst comprising a platinum at 50.degree. to 170.degree. C. under 1 to 5 bar.
摘要翻译： 通过一氧化碳和亚硝酸甲酯的连续气相反应制备碳酸二甲酯（DMC），该催化剂在1至5巴下在50至170℃下包含铂。
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公开(公告)号：US5449806A
公开(公告)日：1995-09-12
申请号：US272497
申请日：1994-07-08
摘要： Dialkyl carbonates can be prepared by reacting carbon monoxide with alkyl nitrites in a continuous gas phase reaction in the presence of a catalyst using a fixed bed reactor with a short catalyst bed in the direction of flow. The dialkyl carbonates are formed with almost quantitative selectivity; thermal decomposition of the alkyl nitrite, with the resulting formation of decomposition products, is not observed.
摘要翻译： 碳酸二烷基酯可以通过在催化剂存在下在连续气相反应中使一氧化碳与烷基亚硝酸盐反应来制备，所述催化剂使用在流动方向上具有短催化剂床的固定床反应器。 以几乎定量的选择性形成碳酸二烷基酯; 没有观察到亚硝酸烷基酯的热分解，从而形成分解产物。
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公开(公告)号：US06448455B1
公开(公告)日：2002-09-10
申请号：US09935024
申请日：2001-08-22
申请人： Paul Wagner , Alexander Klausener
发明人： Paul Wagner , Alexander Klausener
IPC分类号： C07C2726
摘要： The invention relates to a process for preparing trimethylolpropane with simultaneous formation of formate salts of the formula M(OOCH)n (I), where M represents the alkali metals lithium, sodium, potassium, rubidium, caesium and/or the alkaline earth metals beryllium, calcium, strontium, barium and n is 1 when M is an alkali metal and is 2 when M is an alkaline earth metal, where n-butyraldehyde, formaldehyde and a base are reacted by the inorganic Cannizzaro process and the reaction mixture formed is subjected to vapour pressure filtration as a suspension, if appropriate after partly removing distillable constituents, such as water.
摘要翻译： 本发明涉及一种三羟甲基丙烷的制备方法，同时形成甲酸盐的甲酸盐M代表碱金属锂，钠，钾，铷，铯和/或碱土金属铍，钙，锶，钡和n为1 当M是碱金属时，当M是碱土金属时为2，其中正丁醛，甲醛和碱通过无机Cannizzaro法反应，形成的反应混合物作为悬浮液进行蒸气压过滤，如果合适 部分去除可蒸馏成分，如水。
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公开(公告)号：US6100433A
公开(公告)日：2000-08-08
申请号：US285156
申请日：1999-04-01
CPC分类号： C07C41/16
摘要： 3-Methoxy-1-propanol is prepared in an advantageous manner by alkylating 1,3-propanediol with methyl chloride in the presence of a base.
摘要翻译： 通过在碱存在下用甲基氯烷基化1,3-丙二醇，以有利的方式制备3-甲氧基-1-丙醇。
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9.发明授权Method for producing 4-chlorobiphenyl and 4-chlorobiphenyl-specific specifications 失效制备4-氯联苯和4-氯联苯的具体规格的方法公开(公告)号：US06710217B1
公开(公告)日：2004-03-23
申请号：US10009536
申请日：2001-11-13
IPC分类号： C07C1700
CPC分类号： C07C25/18 , B01J27/10 , B01J29/60 , C07C17/12 , C07C17/383
摘要： The invention relates to a process for preparing 4-chlorobiphenyl by (a) reacting biphenyl and chlorine in the presence of one or more ring-chlorination catalysts, and (b) subjecting the reaction mixture obtained in step (a) to fractional distillation to obtain 4-chlorobiphenyl.
摘要翻译： 本发明涉及一种通过（a）在一种或多种环氯化催化剂存在下使联苯和氯反应制备4-氯联苯的方法，和（b）将步骤（a）中获得的反应混合物进行分馏，得到 4-氯联苯。
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公开(公告)号：US06441254B1
公开(公告)日：2002-08-27
申请号：US10017816
申请日：2001-12-13
申请人： Frank Döbert , Paul Wagner , Alexander Klausener , Wolfgang Eymann , Rolf Feller
发明人： Frank Döbert , Paul Wagner , Alexander Klausener , Wolfgang Eymann , Rolf Feller
IPC分类号： C07C3118
摘要： The present invention relates to a process for preparing trimethylol compounds and formic acid by reaction of formaldehyde and aldehydes in the presence of a nitrogen base and distillation of the resulting reaction mixture in the presence of an auxiliary.
摘要翻译： 本发明涉及通过甲醛和醛在氮气存在下反应制备三羟甲基化合物和甲酸的方法，并在辅助剂存在下蒸馏所得的反应混合物。
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