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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Применить Всего найдено 4. Отображено 4.
04-05-2011 дата публикации

Preparation method of menthane diamine

Номер: CN0102040525A
Автор: XIAONI DAI, JUNFENG LI, QUEJUN TANG, BEI LI, ZONGYANG CAI, JUHUA JING, DAN LIU, GUANGWEI WANG, CHUNXIA LI, YOUREN WANG, JING CHEN, XIAOQIN LONG, DAI XIAONI, LI JUNFENG, TANG QUEJUN, LI BEI, CAI ZONGYANG, JING JUHUA, LIU DAN, WANG GUANGWEI, LI CHUNXIA, WANG YOUREN, CHEN JING, LONG XIAOQIN
Принадлежит:

The invention belongs to the field of chemical synthesis and in particular to a preparation method of menthane diamine. The preparation method comprises the detailed steps: carrying out condensation reaction, hydrolysis reaction, neutralization reaction and purification on bipentene, sulfuric acid and liquid hydrocyanic acid, and then obtaining the menthane diamine. By utilizing the preparation method of menthane diamine, the yield can be up to 82.5% and the purity of the menthane diamine reaches more than 70.0%.

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Номер записи: 1
06-01-2010 дата публикации

Method for preparing N-Phosphonomethyl iminodiacetic acid through hydrolyzing iminodiacetonitrile

Номер: CN0101619077A
Автор: CHEN JING, ZHOU CHUILONG, WANG XIAOYONG, XU HONG, MA ZEZHOU, LUO YANGU, REN QUAN, CHEN XUEQIANG, HU XIN, HE YONGMEI, LI JUNFENG, TANG QUEJUN, CHEN YONG, LIU DAN, WANG DONGLIN, DAI XIAONI, LI ZHENGYU, YIN XIAOQIANG, ZHU LILI, LONG XIAOQIN, JING CHEN, CHUILONG ZHOU, XIAOYONG WANG, HONG XU, ZEZHOU MA, YANGU LUO, QUAN REN, XUEQIANG CHEN, XIN HU, YONGMEI HE, JUNFENG LI, QUEJUN TANG, YONG CHEN, DAN LIU, DONGLIN WANG, XIAONI DAI, ZHENGYU LI, XIAOQIANG YIN, LILI ZHU, XIAOQIN LONG
Принадлежит:

The invention discloses a method for preparing N-Phosphonomethyl iminodiacetic acid through hydrolyzing iminodiacetonitrile, which comprises the following steps: hydrolyzing and deaminating the iminodiacetonitrile by using lime aqueous solution to obtain solution with the iminodiacetonitrile, acidizing the solution by using hydrochloric acid aqueous solution and sulfuric acid aqueous solution, filtering calcium desulfurization, decoloring filtrate by using active carbon; removing sulfate ions by using barium salt, removing metal ions through an ion-exchange resin column, condensing to obtain solution with iminodiacetic acid salt, reacting with phosphorous acid and formaldehyde under the catalysis of inorganic acid, condensing, crystallizing and filtering reaction solution, respectively collecting filter cakes and filtrate, finally obtaining N-Phosphonomethyl iminodiacetic acid after the filter cakes are dried, and recycling the filtrate. The invention has the advantages of short process ...

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Номер записи: 2
14-07-2010 дата публикации

Method for preparing N-Phosphonomethyl iminodiacetic acid through hydrolyzing iminodiacetonitrile

Номер: CN0101619077B
Автор: JING CHEN, CHUILONG ZHOU, XIAOYONG WANG, HONG XU, ZEZHOU MA, YANGU LUO, QUAN REN, XUEQIANG CHEN, XIN HU, YONGMEI HE, JUNFENG LI, QUEJUN TANG, YONG CHEN, DAN LIU, DONGLIN WANG, XIAONI DAI, ZHENGYU LI, XIAOQIANG YIN, LILI ZHU, XIAOQIN LONG, CHEN JING, ZHOU CHUILONG, WANG XIAOYONG, XU HONG, MA ZEZHOU, LUO YANGU, REN QUAN, CHEN XUEQIANG, HU XIN, HE YONGMEI, LI JUNFENG, TANG QUEJUN, CHEN YONG, LIU DAN, WANG DONGLIN, DAI XIAONI, LI ZHENGYU, YIN XIAOQIANG, ZHU LILI, LONG XIAOQIN
Принадлежит:

The invention discloses a method for preparing N-Phosphonomethyl iminodiacetic acid through hydrolyzing iminodiacetonitrile, which comprises the following steps: hydrolyzing and deaminating the iminodiacetonitrile by using lime aqueous solution to obtain solution with the iminodiacetonitrile, acidizing the solution by using hydrochloric acid aqueous solution and sulfuric acid aqueous solution, filtering calcium desulfurization, decoloring filtrate by using active carbon; removing sulfate ions by using barium salt, removing metal ions through an ion-exchange resin column, condensing to obtain solution with iminodiacetic acid salt, reacting with phosphorous acid and formaldehyde under the catalysis of inorganic acid, condensing, crystallizing and filtering reaction solution, respectively collecting filter cakes and filtrate, finally obtaining N-Phosphonomethyl iminodiacetic acid after the filter cakes are dried, and recycling the filtrate. The invention has the advantages of short process ...

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Номер записи: 3
20-04-2011 дата публикации

Method for preparing isophorone nitrile

Номер: CN0102020586A
Автор: Li Yan, Tang Quejun, Li Bei, Xie Shaolin, Li Junfeng, Wang Guangwei, Wang Youren, Chen Jing, Long Xiaoqin
Принадлежит:

The invention relates to the field of chemical synthesis, in particular to a method for preparing isophorone nitrile, which comprises the following concrete steps of: a. reacting isophorone with liquid hydrocyanic acid for 10 minutes to 20 hours at 70-220 DEG C under 1.0-6.0 Mpa under the catalysis of industrial-grade calcium oxide, wherein the mol ratio of isophorone to liquid hydrocyanic acid is 1.2-8.0: 1, and the dosage of the industrial-grade calcium oxide is equivalent to 0.2-10.0 mole percent of the isophorone; b. centrifugalizing or filtering the reaction liquid obtained in the step a to remove the industrial-grade calcium oxide, then distilling for 1-2 times to obtain the crude product of the isophorone nitrile, and recovering an isophorone fraction for application; and c. recrystallizing the crude product of the isophorone nitrile obtained in the step b to obtain the isophorone nitrile. The method can be used for efficiently preparing the higher-purity isophorone nitrile without ...

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Номер записи: 4