N-isopropyl hydroxylamine production method

A technology of isopropyl hydroxylamine and production method, applied in the field of chemical industry, can solve the problems such as not seeing N-isopropyl hydroxylamine production process data record and the like

Inactive Publication Date: 2005-12-21
陈军民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Have not yet seen the data records of the production process of N-isopropyl hydroxylamine

Method used

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Embodiment Construction

[0014] The present invention will be further described below in conjunction with embodiment:

[0015] Get 100 grams of diisopropylamine raw material, put it into a 500-milliliter three-necked bottle, heat up to a temperature of 70° C., pass through a carbon dioxide gas catalyst, and slowly add 250 grams of 30% concentration of hydrogen peroxide. Oxidation reaction is completed within hours, and nitrone is obtained by oxidation; adding 107 milliliters of concentration is 37% hydrochloric acid, hydrolyzing and concentrating under acidic conditions, cooling and crystallizing to make 98 grams of isopropyl hydroxylamine salt; in isopropyl hydroxylamine hydrochloride Add 1000 milliliters of sherwood oil solvent and 120 grams of sodium hydroxide, after neutralization reaction, make high-purity 99% N-isopropyl hydroxylamine.

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Abstract

This invention involves a method for producing N-isopropyl hydroxylamine, it uses diisopropylamine as raw materials, operates according to the following technological process: oxidation, acid treatment, condensing, neutralization, etc. to get N-isopropyl hydroxylamine. Above-mentioned catalyst should be carbon dioxide or the amine salt of the carbon dioxide; Above-mentioned acid of acid treatment can be organic acid or inorganic acid too; The solvents of above-mentioned neutralization are the ether, and can be alcohol, alkane or water. N-isopropyl hydroxylamine manufacturing method of this invention has smaller capital asserts, lower cost and simple operation, suited to producing in industrialization.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically refers to a production method of N-isopropylhydroxylamine. Background technique [0002] The English abbreviation of N-isopropyl hydroxylamine is IPHA, which belongs to the secondary alkyl hydroxylamine class. It has the properties of polymerization inhibitor and terminal polymerization inhibitor. It is a polymerization inhibitor and terminal polymerization inhibitor in the production of styrene-butadiene rubber and nitrile rubber. It is also an oxygen scavenger for dissolving and removing oxygen in the water supply system of thermal power generation. [0003] N, N-diethylhydroxylamine, the English abbreviation DEHA, is currently widely used as a terminal polymerization inhibitor. It has the characteristics of low toxicity and non-corrosive equipment, and it also acts as a polymerization inhibitor in the gas phase monomer. [0004] In addition to the abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C239/10
Inventor 陈军民
Owner 陈军民
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