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Polymer emulsifier for low-shear emulsification and preparation method thereof

A polymer emulsifier and low shear technology, which is applied in the field of polymer emulsifier for low shear emulsification and its preparation, can solve the problems of the emulsifier's low shear emulsification ability and storage stability can not meet the requirements, etc. Excellent low shear milking ability, good emulsification performance and emulsification stability, and the effect of wide source of raw materials

Active Publication Date: 2018-03-20
CHINA GEZHOUBA GRP EXPLOSIVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of latex-based low-shear emulsification technology, the requirements for emulsifiers used in emulsified explosives are becoming more and more stringent. The current emulsifiers have low-shear emulsification ability and storage stability that cannot meet the requirements.

Method used

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  • Polymer emulsifier for low-shear emulsification and preparation method thereof
  • Polymer emulsifier for low-shear emulsification and preparation method thereof
  • Polymer emulsifier for low-shear emulsification and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 Preparation of polymer emulsifier for low shear emulsification

[0022] Follow the steps below:

[0023] (1) Put polyisobutylene into the reaction kettle, heat to 70°C, add maleic anhydride and a catalytic amount of benzoyl peroxide tert-butyl peroxide under the condition of nitrogen protection, keep stirring for 2 hours, heat up to 180°C, and react for 7 hours , filtered to obtain polyisobutylene succinic anhydride;

[0024] (2) Return the polyisobutylene succinic anhydride synthesized in step (1) back to the reactor, add 60N base oil and polyoxyethylene cetyl (5) ether under nitrogen protection conditions, heat while stirring, and heat up to 110°C, and reacted for 6 hours to obtain an esterified product;

[0025] (3) Cool the esterification product synthesized in step (2) to 65° C., add hydrazine (i.e. hydrazine) under nitrogen protection conditions, and keep stirring for 6 hours to obtain the polymer emulsifier of the present invention with a density of 0...

Embodiment 2

[0027] Example 2 Preparation of polymer emulsifier for low shear emulsification

[0028] Follow the steps below:

[0029] (1) Put polypropylene into a reaction kettle, heat to 80°C, add glutaconic acid under the condition of nitrogen protection, keep stirring for 1 hour, heat up to 240°C, react for 3 hours, and filter to obtain polypropylene glutaric acid;

[0030] (2) Return the polypropylene glutaric acid synthesized in step (1) back to the reactor, add 150N base oil and polyoxyethylene lauryl (7) ether under nitrogen protection conditions, heat while stirring, and heat up To 160°C, react for 4 hours to obtain the esterification product;

[0031] (3) Cool the esterification product synthesized in step (2) to 90° C., add hydrazine (i.e. hydrazine) under nitrogen protection conditions, and keep stirring for 1 hour to obtain the polymer emulsifier of the present invention with a density of 0.936 g / mL , the acid value is 15.9mgKOH / g, the viscosity is 250.17mm 2 / s, the yield ...

Embodiment 3

[0033] Example 3 Preparation of polymer emulsifier for low shear emulsification

[0034] Follow the steps below:

[0035] (1) Put the propylene-isobutylene copolymer into the reaction kettle, heat to 75°C, add maleic acid under the condition of nitrogen protection, keep stirring for 1.5h, heat up to 220°C, react for 5h, and filter to obtain polyolefin butadiene acid;

[0036] (2) Return the polyolefin succinic acid synthesized in step (1) back to the reactor, add 220N base oil and polyoxyethylene stearyl (7) ether under nitrogen protection conditions, heat while stirring, and heat up To 150°C, react for 5 hours to obtain the esterification product;

[0037] (3) Cool the esterification product synthesized in step (2) to 75° C., add hydrazine (i.e. hydrazine) under nitrogen protection conditions, and keep stirring for 5 hours to obtain the polymer emulsifier of the present invention with a density of 0.874 g / mL , the acid value is 9.2mgKOH / g, the viscosity is 129.37mm 2 / s, ...

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Abstract

The invention discloses a polymer emulsifier for low shear emulsification. The polymer emulsifier is prepared from polyolefin, dicarboxylic acid or anhydride, polyoxyethylene alkyl ethers, hydrazine and fluxing oil, the molar ratio of the polyolefin to the dicarboxylic acid or anhydride to the polyoxyethylene alkyl ethers to the hydrazine is 1.0 to 1.0-2.5 to 0.8-1.6 to 0.25-0.75, and the mass of the fluxing oil is 0.5-2.0 times that of the polyolefin. The invention further discloses a preparation method of the emulsifier, and the method comprises the steps that 1, the polyolefin is put into a reaction kettle, heating is conducted to the temperature ranging from 70 DEG C to 80 DEG C, the dicarboxylic acid or anhydride is added, and stirring, heating, reaction and filtration are conducted; 2, a compound synthesized in the first step is put back into the reaction kettle, the fluxing oil and the polyoxyethylene alkyl ethers are added, stirring and heating are conducted, and an esterification product is obtained through a warming reaction; 3, the esterification product is cooled, the hydrazine is added, a reaction is conducted, and the polymer emulsifier for low shear emulsification is obtained. The polymer emulsifier is specially suitable for low shear emulsification or mixing emulsification technology for preparing an emulsion matrix.

Description

technical field [0001] The invention relates to the technical field of chemical synthesis, in particular to a polymer emulsifier for low-shear emulsification and a preparation method thereof. Background technique [0002] The properties of emulsifiers have an important impact on the quality, explosive performance and storage performance of emulsion explosives. Therefore, the performance of emulsifiers has been paid more and more attention by the emulsion explosives industry. [0003] Polyolefin emulsifiers for emulsion explosives originated from polyisobutylene succinimide ashless dispersants in lubricating oil additives, and most of the subsequent research and development of polyolefin emulsifiers are based on this. The advantage of polyisobutylene succinimide emulsifier is that the emulsion explosive prepared by it is relatively stable, and the storage time is relatively long; but its emulsifying performance is relatively poor, and it is difficult to emulsify. In addition...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G81/02C08F8/46C08F110/10C08F110/06C08F210/10C08F110/02C08F110/14C08F110/08C08F112/08C08F210/16C08J3/24
CPCC08F8/46C08G81/025C08J3/24C08J2387/00C08F110/10C08F110/06C08F210/10C08F110/02C08F110/14C08F110/08C08F112/08C08F210/16
Inventor 赵华平董云贾紫永周桂松杜华善
Owner CHINA GEZHOUBA GRP EXPLOSIVE CO LTD