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Cocatalyst for use in synthesis of drag reducer

A technology of co-catalyst and drag reducer, which is applied in gas/liquid distribution and storage, mechanical equipment, pipeline system, etc. It can solve problems such as inconvenient operation and prone to explosion, and achieve the effect of improving safety and improving transportation capacity

Active Publication Date: 2010-06-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure triisobutylaluminum is prone to explosion when it sees water and oxygen, and requires high safety in storage and use, and it is very inconvenient to operate.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] Vacuumize and fill with nitrogen in a two-liter polymerization kettle to maintain an anhydrous and oxygen-free reaction environment, and add 500 grams of dodecene. 100 grams of styrene, 16 grams of diluted triisobutylaluminum cocatalyst (3.2 grams of triisobutylaluminum, 7.3 grams of n-heptane, 5.5 grams of rubber mineral spirits). 1 gram of electron donor (including 0.3 gram of diisopropyldimethoxysilane and 0.7 gram of dicyclopentyldimethoxysilane), 0.05 gram of main catalyst, and control the system temperature at -40 to 10 ℃ to obtain viscous Ultra-high molecular weight polymers.

Embodiment 2

[0010] Vacuumize and fill nitrogen in a two-liter polymerization kettle to keep an anhydrous and oxygen-free reaction environment, add 450 grams of dodecene, 200 grams of octene, and 10 grams of dilute triisobutyl aluminum cocatalysts (wherein triisobutyl Aluminum 2 grams, n-heptane 3 grams, rubber mineral spirits 5 grams). 1 g of electron donor (including 0.3 g of diisopropyldimethoxysilane and 0.7 g of dicyclopentyldimethoxysilane), 0.1 g of main catalyst, and control the system temperature at -40 to 10°C to obtain viscous Ultra-high molecular weight polymers.

[0011]

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PUM

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Abstract

The invention relates to polymer synthesis technology, in particular to a cocatalyst for use in the synthesis of a drag reducer, which is mainly used for drag reduction in long-distance pipeline transportation and belongs to the technical field of chemical industry. In the invention, an alpha-olefin is synthesized by coordination anionic polymerization, triisobutyl aluminum is used as a cocatalyst, the triisobutyl aluminum is diluted by a refined solvent till a safe concentration is obtained, and the safety is improved effectively as the cocatalyst gives off smoke upon contact with water and oxygen at the safe concentration. The synthesized reducer for oil product transported in HG pipeline is used in long-distance oil transportation pipelines and can improve the transportation capacity of the pipelines.

Description

technical field [0001] The invention relates to a polymer synthesis technology, in particular to a co-catalyst used for synthesizing a drag reducer, which is mainly used for drag reduction in long-distance pipeline transportation, and belongs to the technical field of chemical industry. Background technique [0002] Olefin polymerization belongs to coordination ionic polymerization, which is a polymerization reaction under the action of a complex catalyst. Usually, the polymerization process is that the monomer and the catalyst first undergo complexation, and the monomer "inserts" into the active chain and the catalyst through the transition state. In between, the active chain grows. The complexation ability and addition direction of monomers and catalysts are determined by structural factors such as their electronic effects and steric hindrance effects. High stereoregular polymers can only be obtained by using catalysts with strong stereoregularity. There are mainly three...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/14C08F212/08C08F4/58C08F4/52F17D1/16
Inventor 张惠民曹旦夫孙旭张宁姜和圣杨文新范军忠刘建国贾宝芳王德治成旭霞吴杰曹明殷寿成文讯戴翠兰马雨薇祖海燕张淑红黄明斌
Owner CHINA PETROLEUM & CHEM CORP
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