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

US5679830A Method of producing pivaloylacetic acid ester 失效
标题翻译：生产新戊酰乙酸酯的方法
公开(公告)号：US5679830A
公开(公告)日：1997-10-21
申请号：US501439
申请日：1995-07-12
申请人： Katsuhiko Mizutare , Masayoshi Oku , Tsuyoshi Ueyama
发明人： Katsuhiko Mizutare , Masayoshi Oku , Tsuyoshi Ueyama
IPC分类号： C07C67/333 , C07C69/716
CPC分类号： C07C67/333
摘要： A pivaloylacetic acid ester is prepared at a high yield by decarbonylating a pivaloylpyruvic acid ester in gas or liquid phase in the presence of an inorganic oxide catalyst which comprises aluminum in an amount of 10% by weight or more in terms of aluminum oxide, and preferably is substantially free from heavy metals, for example, Fe, Cu, Ni, Mn, Cr, Mo and Co, and exhibits a high catalytic activity and chemical stability.
摘要翻译：通过在无机氧化物催化剂的存在下，在气相或液相中对新戊酰丙酮酸进行脱碳化，以高产率制备新戊酰乙酸酯，该无机氧化物催化剂包含以氧化铝换算为10重量％以上的铝，优选基本上不含重金属，例如Fe，Cu，Ni，Mn，Cr，Mo和Co，具有高的催化活性和化学稳定性。

2. 发明授权

US4453026A Process for continuously preparing ethylene glycol 失效
标题翻译：连续制备乙二醇的方法
公开(公告)号：US4453026A
公开(公告)日：1984-06-05
申请号：US459424
申请日：1983-01-19
申请人： Susumu Tahara , Kozo Fujii , Keig Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
发明人： Susumu Tahara , Kozo Fujii , Keig Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
IPC分类号： C07C31/20 , C07C29/149 , C07C29/80 , C07C203/00 , C07C29/136
CPC分类号： C07C29/149 , C07C201/04 , C07C29/80
摘要： There is disclosed a process for continuously preparing ethylene glycol, which comprises (1) a first step of contacting a gas containing carbon monoxide and an ester of nitrous acid with a solid catalyst of platinum group metal series in the gaseous phase thereby to obtain a product containing a diester of oxalic acid, (2) a second step of condensing the product of the first step thereby to separate a non-condensed gas containing nitrogen monoxide formed by the catalytic reaction of the first step from a condensed liquid containing the diester of oxalic acid, (3) a third step of contacting the non-condensed gas of the second step with a gas containing molecular oxygen and an alcohol, and recycling the resulting gas containing an ester of nitrous acid to the first step, (4) a fourth step of contacting the condensed liquid of the second step containing the diester of oxalic acid and hydrogen with a catalyst for hydrogenation in the gaseous phase thereby to obtain a product containing ethylene glycol, (5) a fifth step of distilling the product of the fourth step thereby to distill out the alcohol and to obtain ethylene glycol, and (6) a sixth step of recycling the alcohol of the fifth step as an alcohol source for the third step.
摘要翻译：公开了连续制备乙二醇的方法，其包括（1）在气相中使含有一氧化碳和亚硝酸酯的气体与铂族金属系固体催化剂接触的第一步骤，从而获得产物含有草酸二酯的方法，（2）将第一步骤的产物冷凝的第二步骤，由第一步骤的催化反应形成的含有一氧化氮的非冷凝气体与含有草酸二酯的冷凝液分离酸，（3）使第二步骤的非冷凝气体与含有分子氧和醇的气体接触的第三步骤，并将产生的含有亚硝酸酯的气体再循环至第一步骤，（4）第四步骤将含有草酸和氢的二酯的第二步骤的冷凝液与气相中的氢化催化剂接触的步骤，从而获得含有eth的产物（5）第五步骤，蒸馏第四步骤的产物，从而蒸馏出醇并获得乙二醇;和（6）将第五步骤的醇再循环作为醇源的第六步骤，第三步。

3. 发明授权

US5162563A Process for preparing a diester of carboxylic acid 失效
标题翻译：制备羧酸酯的方法
公开(公告)号：US5162563A
公开(公告)日：1992-11-10
申请号：US599134
申请日：1990-10-17
申请人： Keigo Nishihira , Katsuhiko Mizutare , Shuji Tanaka
发明人： Keigo Nishihira , Katsuhiko Mizutare , Shuji Tanaka
IPC分类号： C07C68/00 , C07C69/96
CPC分类号： C07C68/00
摘要： A process for preparing a diester of carbonic acid which comprises bringing carbon monoxide into contact with an ester of nitrous acid in a vapor phase at a pressure greater than atmospheric pressure in the presence of a solid catalyst having (a) a platinum group metal or a compound thereof and (b) at least one metal compound of a metal selected from the group consisting of iron, copper, bismuth, cobalt, nickel and tin; carried on a carrier.

4. 发明授权

US4467109A Process for continuous preparation of diester of oxalic acid 失效
标题翻译：连续制备草酸二酯的方法
公开(公告)号：US4467109A
公开(公告)日：1984-08-21
申请号：US495460
申请日：1983-05-19
申请人： Susumu Tahara , Kozo Fujii , Keigo Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
发明人： Susumu Tahara , Kozo Fujii , Keigo Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
IPC分类号： C07C69/36 , C07C69/34
CPC分类号： C07C69/36
摘要： There is provided a process for the continuous preparation of a diester of oxalic acid, which comprises a first step of reacting carbon monoxide with an ester of nitrous acid in the gaseous phase; a second step of condensing the gaseous reaction mixture to separate a non-condensed gas from a condensed liquid containing the diester of oxalic acid; a third step of introducing the non-condensed gas of the second step to a regeneration column, thereby contacting it with a gas containing molecular oxygen and an alcohol, and recycling the resulting gas containing an ester of nitrous acid to the reactor of the first step; a fourth step of distilling out an alcohol containing a diester of carbonic acid formed as a by-product of the first step and obtaining a liquid diester of oxalic acid; and a fifth step of introducing the distillate of the fourth step to a hydrolysis column thereby hydrolyzing the diester of carbonic acid in the gas and recycling the alcohol as an alcohol source for the third step.
摘要翻译：提供了一种用于连续制备草酸二酯的方法，其包括使一氧化碳与亚硝酸酯在气相中反应的第一步骤; 冷凝气态反应混合物以从含有草酸二酯的冷凝液分离非冷凝气体的第二步骤; 将第二步骤的非冷凝气体引入再生塔的第三步骤，由此使其与含有分子氧和醇的气体接触，并将产生的含有亚硝酸酯的气体再循环到第一步骤的反应器 ; 第四步骤，蒸馏出含有作为第一步副产物的碳酸二酯的醇，得到草酸的液体二酯; 以及第五步骤，将第四步骤的馏出物引入水解塔，由此使气体中的碳酸二酯水解并再循环醇作为第三步的醇源。

5. 发明授权

US4461909A Process for continuously preparing a diester of oxalic acid 失效
标题翻译：连续制备草酸二酯的方法
公开(公告)号：US4461909A
公开(公告)日：1984-07-24
申请号：US495459
申请日：1983-05-19
申请人： Susumu Tahara , Kozo Fujii , Keigo Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
发明人： Susumu Tahara , Kozo Fujii , Keigo Nishihira , Masaoki Matsuda , Katsuhiko Mizutare
IPC分类号： B01J23/44 , C07C69/36 , C07C69/34
CPC分类号： C07C69/36
摘要： There is provided a process for the continuous preparation of a diester of oxalic acid which comprises a first step of reacting carbon monoxide with an ester of nitrous acid in the gaseous phase; a second step of condensing the gaseous reaction mixture to separate a non-condensed gas from a condensed liquid containing the diester of oxalic acid; a third step of introducing the non-condensed gas of the second step to a regeneration column and thereby contacting it with a gas containing molecular oxygen and an alcohol to regenerate nitrogen monoxide in the non-condensed gas into an ester of nitrous acid so as to bring the concentration of nitrogen monoxide in the gas at the outlet of the column to a level of from 2 to 7% by volume; and a fourth step of recycling the gas of the third step containing the ester of nitrous acid and from 2 to 7% by volume of nitrogen monoxide to the reactor of the first step.
摘要翻译：提供了一种用于连续制备草酸二酯的方法，该方法包括使一氧化碳与亚硝酸酯在气相中反应的第一步骤; 冷凝气态反应混合物以从含有草酸二酯的冷凝液分离非冷凝气体的第二步骤; 将第二步骤的非冷凝气体引入再生塔的第三步骤，由此使其与含有分子氧和醇的气体接触，以将非冷凝气体中的一氧化氮再生成亚硝酸酯，以便使塔的出口处的气体中的一氧化氮浓度达到2〜7体积％的水平; 以及将含有亚硝酸酯和2〜7体积％一氧化氮的第三步骤的气体再循环到第一步骤的反应器的第四步骤。

6. 发明授权

US5994553A Method for preparing 2-mercaptothiazole 失效
标题翻译： 2-巯基噻唑的制备方法
公开(公告)号：US5994553A
公开(公告)日：1999-11-30
申请号：US211446
申请日：1998-12-15
申请人： Katsumasa Harada , Akio Matsushita , Taku Nakamura , Katsuhiko Mizutare , Takafumi Hirakawa , Ken Ikuno , Noriaki Iwase
发明人： Katsumasa Harada , Akio Matsushita , Taku Nakamura , Katsuhiko Mizutare , Takafumi Hirakawa , Ken Ikuno , Noriaki Iwase
IPC分类号： C07D277/20 , C07D277/36
CPC分类号： C07D277/36
摘要： Disclosed is a method for preparing 2-mercaptothiazole, which comprises adding a dithiocarbamate salt represented by the formula (1): ##STR1## wherein M is a cation, to a chloroacetaldehyde solution in the presence of an acid.
摘要翻译：公开了一种2-巯基噻唑的制备方法，该方法包括在酸存在下，向氯乙醛溶液中加入由式（1）表示的二硫代氨基甲酸盐：其中M为阳离子。

7. 发明授权

US5808092A Process for preparing-1-ethyl-5-hydroxypyrazole 失效
标题翻译： 1-乙基-5-羟基吡唑的制备方法
公开(公告)号：US5808092A
公开(公告)日：1998-09-15
申请号：US950991
申请日：1997-10-15
申请人： Katsuhiko Mizutare , Takafumi Hirakawa , Ken Ikuno
发明人： Katsuhiko Mizutare , Takafumi Hirakawa , Ken Ikuno
IPC分类号： C07D231/20
CPC分类号： C07D231/20
摘要： Disclosed is a process for preparing 1-ethyl-5-hydroxy-pyrazole, which comprises reacting an alkyl 3-alkoxy-acrylate represented by the following formula (1): ##STR1## wherein R.sup.1 and R.sup.2 are the same or different from each other and each represent a lower alkyl group, and in the formula represents either cis- or trans-configuration, with ethylhydrazine in an amount of 1- to 10-fold mole based on 1 mole of the alkyl 3-alkoxyacrylate in a weakly basic aqueous solvent.
摘要翻译：公开了1-乙基-5-羟基 - 吡唑的制备方法，该方法包括使由下式（1）表示的3-烷氧基 - 丙烯酸烷基酯：其中R1和R2相同或不同彼此各自表示低级烷基，并且该式中的+ Z代表顺式或反式构型，其中乙基肼的量为1-10倍摩尔，基于1摩尔3-烷氧基丙烯酸烷基酯弱碱性水溶剂。

8. 发明授权

US5315032A Method of producing an N-hydroxycarbamate compound 失效
标题翻译： N-羟基氨基甲酸酯化合物的制造方法
公开(公告)号：US5315032A
公开(公告)日：1994-05-24
申请号：US67551
申请日：1993-05-26
申请人： Keigo Nishihira , Shuji Tanaka , Katsuhiko Mizutare , Masahiro Kondo
发明人： Keigo Nishihira , Shuji Tanaka , Katsuhiko Mizutare , Masahiro Kondo
IPC分类号： C07C269/00 , C07C269/04 , C07C271/00 , C07C271/16 , C07C261/00
CPC分类号： C07C269/04
摘要： An N-hydroxycarbamate compound of the formula ROCONHOH in which R is C.sub.1-8 alkyl, C.sub.3-12 cycloalkyl, aryl or aralkyl group, is produced by reacting a carbonic acid diester of the formula ROCOOR in which R is as defined above, with hydroxylamine in the presence of a basic substance, for example, an alkali metal hydroxide or alkoxide.
摘要翻译：其中R是C 1-8烷基，C 3-12环烷基，芳基或芳烷基的式ROCONHOH的N-羟基氨基甲酸酯化合物是通过使式ROCOOR的碳酸二酯（其中R如上定义）与羟胺在碱性物质的存在下，例如碱金属氢氧化物或醇盐。

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