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Emulsifier utilized for emulsion explosive and its preparation method

A technology of emulsified explosives and emulsifiers, which is applied in chemical instruments and methods, non-explosive/non-thermal agent components, explosives, etc. It can solve the problems of high emulsification conditions and poor storage stability of emulsified explosives, and achieve good emulsification performance.

Inactive Publication Date: 2003-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The emulsifiers involved in the above patents all have the disadvantages of high requirements for emulsification conditions and poor storage stability of the prepared emulsion explosives

Method used

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  • Emulsifier utilized for emulsion explosive and its preparation method

Examples

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example 1

[0021] Put 100 g of polyisobutene with terminal olefin content of number average molecular weight Mn=1000 (BASF company product, terminal olefin content is 85%) into a closed autoclave, feed nitrogen, then feed air oxidation at 150° C. for 2 hours, and react The air partial pressure in the kettle is 0.04MPa. Then, the molar ratio of polyisobutylene to maleic anhydride is 1:2.4, maleic anhydride is added at 150°C, the reaction temperature rises to 210°C within 2 hours, and the reaction is continued for 5 hours. Then add 2% tert-butyl peroxide, react at 150° C. for 1 hour, remove unreacted maleic anhydride to obtain acylating agent A, and the degree of substitution of the acylating agent is 1.6.

example 2

[0023] 100 g of polyisobutylene with terminal olefin content of number average molecular weight Mn=2300 (BASF company product, terminal olefin content is 85%) 100g is put into airtight autoclave, feeds air oxidation at 200 ℃ subsequently for 2 hours, the air in the reactor The pressure is 0.04MPa. Then, the molar ratio of polyisobutene to maleic anhydride is 1:2.4, maleic anhydride is added at 150°C, the temperature rises to 230°C within 3 hours, and the reaction is continued for 3 hours. Then add 2% tert-butyl peroxide, react at 155° C. for 2 hours, remove unreacted maleic anhydride to obtain acylating agent B, and the degree of substitution of the acylating agent is 1.8.

example 3

[0025] Put 100 g of polyisobutylene with terminal olefin content of number average molecular weight Mn=2300 (BASF company product, terminal olefin content is 85%) 100g into airtight autoclave, pass into air oxidation at 180 ℃ subsequently for 2 hours, the air in the reactor The pressure is 0.08MPa. Then, the molar ratio of polyisobutene to maleic anhydride is 1:2.4, maleic anhydride is added at 160°C, and the temperature rises to 190°C within 3 hours for reaction, and the reaction time is 6 hours. Then add 2% tert-butyl peroxide, react at 140° C. for 2 hours, remove unreacted maleic anhydride to obtain acylating agent C, and the degree of substitution of the acylating agent is 1.5.

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Abstract

An emulsifier for preparing emusified explosive with long storage time is prepared by the reaction of acylating agent on alkylol amine. Its advantage is high emulsifying performance. Its structural formula is also disclosed.

Description

field of invention [0001] The invention relates to an emulsifier for emulsion explosives and a preparation method thereof. Background technique [0002] Emulsion explosive is a widely used civilian blasting product, mainly in powder form and paste form, generally composed of inorganic salt phase materials, oil phase materials and emulsifiers. Among them, emulsifier is the key to improve the storage stability of emulsion explosives. Emulsion explosive emulsifiers can be divided into high molecular weight emulsifiers and low molecular weight emulsifiers. Low molecular weight emulsifiers, represented by SPAN-80, have the characteristics of low initial emulsification temperature and fast emulsification speed. However, the storage stability period of emulsion explosives prepared by low molecular weight emulsifiers is relatively short, generally no more than half a year. In order to improve the storage stability of emulsion explosives, a lot of research work has been carried ou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B23/00C06B45/00C06B47/14C09K23/22
Inventor 熊崇翔徐未都桂枝张福惠
Owner CHINA PETROLEUM & CHEM CORP
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