专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US4308404A Preparation of bisphenols 失效
标题翻译：双酚的制备
公开(公告)号：US4308404A
公开(公告)日：1981-12-29
申请号：US922021
申请日：1978-07-05
申请人： Arien Kwantes , Arie Van Dongen , Hendrik A. C. Groeneveld
发明人： Arien Kwantes , Arie Van Dongen , Hendrik A. C. Groeneveld
IPC分类号： C07C27/00 , C07C37/20 , C07C39/16 , C07C67/00
CPC分类号： C07C37/20
摘要： An improved continuous process for preparing bisphenols from phenols and carbonyl compounds in the presence of an acidic ion-exchange resin is described wherein the reaction zone comprises at least two reactors in series and a part the effluent from at least one reactor, with the exception of the last reactor, is recycled.
摘要翻译：描述了在酸性离子交换树脂存在下从苯酚和羰基化合物制备双酚的改进的连续方法，其中反应区包含至少两个串联的反应器和来自至少一个反应器的流出物的一部分，最后的反应堆，被回收。

2. 发明授权

US4191843A Preparation of bisphenols 失效
标题翻译：双酚的制备
公开(公告)号：US4191843A
公开(公告)日：1980-03-04
申请号：US958576
申请日：1978-11-07
申请人： Arien Kwantes , Pieter A. Gautier
发明人： Arien Kwantes , Pieter A. Gautier
IPC分类号： B01J31/00 , C07B61/00 , C07C27/00 , C07C37/20 , C07C37/82 , C07C37/86 , C07C39/16 , C07C67/00 , C07C37/00
CPC分类号： C07C37/20 , C07C37/82
摘要： A process for the preparation of bisphenols is described which comprises reacting, in a reaction zone, at least 2 moles of a phenol with a carbonyl compound, at a temperature of from 40.degree. to 95.degree. C., in the presence of an acid ion exchanger, optionally partially modified with a compound having an acidic reacting group and a mercaptan group, and recovering the bisphenols from the reaction zone effluent, characterized in that the reaction zone effluent is contacted with an acid ion exchanger in metal salt form and/or a weak base ion exchanger. As a result, it has been found that the formation of undesirable compounds is substantially reduced.
摘要翻译：描述了制备双酚的方法，其包括在反应区中，在40℃至95℃的温度下，在酸离子存在下使至少2摩尔酚与羰基化合物反应交换剂，任选地用具有酸性反应基团和硫醇基团的化合物部分修饰，并从反应区流出物回收双酚，其特征在于反应区流出物与金属盐形式的酸离子交换剂和/或弱碱离子交换剂。结果发现，不希望的化合物的形成显着减少。

3. 发明授权

US4395576A Process for the preparation of ethanol 失效
标题翻译：乙醇制备方法
公开(公告)号：US4395576A
公开(公告)日：1983-07-26
申请号：US272617
申请日：1981-06-11
申请人： Arien Kwantes , Cornelis W. J. De Goederen
发明人： Arien Kwantes , Cornelis W. J. De Goederen
IPC分类号： C07C27/00 , C07C29/04 , C07C29/141 , C07C29/80 , C07C29/82 , C07C29/84 , C07C29/90 , C07C31/08 , C07C67/00
CPC分类号： C07C29/90 , C07C29/80 , C07C29/82 , C07C29/84
摘要： A process for the preparation of ethanol by catalytic hydration of ethylene in which the crude ethanol is separated by distillation in a first column into a bottom stream consisting of aqueous ethanol and a top stream containing diethyl ether and acetaldehyde, the bottom stream is processed further in a second column, the top stream is hydrogenated and then fractionated in a third column together with an impurities containing stream originating from the second column, and optionally the diethyl ether containing top stream of the third column is recycled to the hydration reactor.
摘要翻译：通过乙烯的催化水合制备乙醇的方法，其中将粗乙醇通过在第一塔中蒸馏分离成由含水乙醇和含有乙醚和乙醛的顶部流组成的塔底物流，将塔底物流进一步处理第二塔，顶部物流被氢化，然后在第三塔中与来自第二塔的含杂质物流一起分馏，任选地将第三塔的含二乙基醚顶部物流循环到水合反应器中。

4. 发明授权

US3972950A Process for the purification of bisphenol A 失效
标题翻译：纯化双酚A的方法
公开(公告)号：US3972950A
公开(公告)日：1976-08-03
申请号：US575277
申请日：1975-05-07
申请人： Arien Kwantes
发明人： Arien Kwantes
IPC分类号： C07C37/68 , C07C37/72 , C07C37/74 , C07C37/22
CPC分类号： C07C37/685 , C07C37/72 , C07C37/74
摘要： Crude 2,2-bis(4-hydroxyphenyl)propane containing impurities such as 2-(2-hydroxyphenyl)-2-(4-hydroxyphenyl)propane is purified by first dissolving the crude material in a polyhydroxy solvent then adding water and an ether having a boiling point less than 110.degree.C whereby the ether extracts the 2,2-bis(4-hydroxyphenyl)propane. The ether-2,2-bis(4-hydroxyphenyl)propane extract is then distilled in the presence of toluene wherein the toluene-2,2-bis(4-hydroxyphenyl)propane bottoms product is separated and cooled to form a purified 2,2-bis(4-hydroxyphenyl)propane precipitate which is subsequently recovered.
摘要翻译：通过首先将粗物质溶解在多羟基溶剂中，然后加入水和醚，纯化含有2-（2-羟基苯基）-2-（4-羟基苯基）丙烷等杂质的粗2,2-二（4-羟基苯基）丙烷沸点低于110℃，由此醚提取出2,2-双（4-羟基苯基）丙烷。然后在甲苯存在下蒸馏出醚 - 2,2-双（4-羟基苯基）丙烷提取物，其中分离甲苯-2,2-双（4-羟基苯基）丙烷塔底产物并冷却，形成纯化的2， 2-（4-羟基苯基）丙烷沉淀，随后回收。

5. 发明授权

US4308405A Preparation of bisphenols 失效
标题翻译：双酚的制备
公开(公告)号：US4308405A
公开(公告)日：1981-12-29
申请号：US922022
申请日：1978-07-05
申请人： Arien Kwantes
发明人： Arien Kwantes
IPC分类号： C07C37/20 , C07C39/16 , C07C39/12
CPC分类号： C07C37/20
摘要： An improved continuous process for preparing bisphenols from phenols and carbonyl compounds in the presence of an acidic ion-exchange resin is described. The improvement comprises recycling a portion of the stream containing bisphenol to the reaction zone before the bisphenol is recovered therefrom.
摘要翻译：描述了在酸性离子交换树脂存在下从苯酚和羰基化合物制备双酚的改进的连续方法。改进之处在于，在双酚被回收之前，将含有双酚的物流的一部分循环到反应区。

6. 发明授权

US4045379A Process for preparation of modified ion-exchange resin 失效
标题翻译：改性离子交换树脂的制备方法
公开(公告)号：US4045379A
公开(公告)日：1977-08-30
申请号：US708522
申请日：1976-07-26
申请人： Arien Kwantes , Pieter A. Gautier , Anthony L. Farragher
发明人： Arien Kwantes , Pieter A. Gautier , Anthony L. Farragher
IPC分类号： B01J31/08 , B01J31/10 , B01J39/20 , C07C27/00 , C07C37/20 , C07C39/16 , C07C67/00 , C08F8/34 , C07C37/00
CPC分类号： C07C37/20 , B01J31/10 , B01J2231/347
摘要： An improved process for preparing bisphenols is described wherein a phenol is reacted with a ketone or aldehyde such as acetone in the presence of an ion-exchange resin modified by partial neutralization with p-aminothiophenol.
摘要翻译：描述了制备双酚的改进方法，其中在与对氨基苯硫酚进行部分中和改性的离子交换树脂的存在下，苯酚与酮或醛如丙酮反应。

7. 发明授权

US3981923A Dehydrogenation of alcohols to ketones 失效
标题翻译：将醇脱氢成酮
公开(公告)号：US3981923A
公开(公告)日：1976-09-21
申请号：US506623
申请日：1974-09-16
申请人： Bernhard Stouthamer , Arien Kwantes
发明人： Bernhard Stouthamer , Arien Kwantes
IPC分类号： B01J23/40 , B01J23/42 , B01J23/46 , B01J23/72 , B01J32/00 , C07C45/00 , C07C45/16
CPC分类号： C07C45/002 , B01J23/40 , B01J23/42 , B01J23/464 , B01J23/72 , B01J32/00
摘要： Controlling the average pore diameter of alumina-supported platinum or rhodium catalysts used for dehydrogenating lower secondary alcohol to ketones affects the product distribution. A large pore diameter gives high selectivities to the ketone corresponding in carbon number to the alcohol feed, whereas a small pore diameter permits coproduction of this lower ketone and economically attractive amounts of higher ketone condensation products.
摘要翻译：控制用于将低级次级醇脱氢为酮的氧化铝负载的铂或铑催化剂的平均孔径影响产品分布。较大的孔径对于与醇进料的碳数相对应的酮具有高的选择性，而小的孔径允许共同生产该低级酮，并具有经济吸引力的高级酮缩合产物。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式