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Ternary complex polymerization inhibitor and its application in acrylic acid production process

A technology of production process and polymerization inhibitor, which is applied in the field of ternary composite polymerization inhibitor, can solve the problems of large amount of polymerization inhibitor, short polymerization inhibition time, environmental impact, etc., achieve low cost, reduce polymerization, and use amount little effect

Inactive Publication Date: 2015-02-25
SHANGHAI CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned types of polymerization inhibitors have a certain effect in the production process of acrylic acid and its esters, but there are still defects such as short polymerization inhibition time or slow polymerization, large amount of polymerization inhibitors, and impact on the environment.

Method used

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  • Ternary complex polymerization inhibitor and its application in acrylic acid production process
  • Ternary complex polymerization inhibitor and its application in acrylic acid production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 Inhibitor application evaluation test:

[0031] The polymerization inhibitor was added to the evaluation raw materials at 650ppm (the evaluation raw materials were acrylic acid production raw materials and refined raw materials), and at 90°C and 2.5MPa, after 12 hours, the colloid content was measured according to the GB / T-8019 2008 standard. 1.6mg / 100ml, 1.2mg / 100ml.

Embodiment 2

[0032] Embodiment 2 Inhibitor application evaluation test:

[0033] The polymerization inhibitor was added to the evaluation raw materials at 650ppm (the evaluation raw materials were acrylic acid production raw materials and refined raw materials), and at 90°C and 2.5MPa, after 12 hours, the colloid content was measured according to the GB / T-8019 2008 standard. 1.3mg / 100ml, 1.4mg / 100ml.

Embodiment 3

[0034] Embodiment 3 polymerization inhibitor application evaluation test:

[0035] The polymerization inhibitor was added to the evaluation raw materials at 650ppm (the evaluation raw materials were acrylic acid production raw materials and refined raw materials), and at 90°C and 2.5MPa, after 12 hours, the colloid content was measured according to the GB / T-8019 2008 standard. 1.1mg / 100ml, 1.1mg / 100ml.

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Abstract

The invention discloses a ternary complex polymerization inhibitor and its application in an acrylic acid production process. The ternary complex polymerization inhibitor is obtained by compounding raw materials comprising substituted phenol, organic amine and a long-chain organic copper salt, and can be applied in the acrylic acid production process. The ternary complex polymerization inhibitor can effectively improve the polymerization inhibition effect, reduces the generation of polymers, and prolongs the induction period of a polymerization reaction from 90d to about 180d in the acrylic acid production process; and the dosage of the ternary complex polymerization inhibitor decreases from routine 1500ppm to below 1000ppm, so the production cost in the acrylic acid production process is effectively reduced, the market competitiveness of a product is improved, and application popularization is suitable.

Description

technical field [0001] The invention relates to a ternary composite polymerization inhibitor and its application in the production process of acrylic acid. Background technique [0002] Acrylic acid is an important organic synthetic raw material and synthetic resin monomer, and is a vinyl monomer with a very fast polymerization rate. Most of them are used to make acrylates such as methyl acrylate, ethyl ester, butyl ester, and hydroxyethyl ester. Acrylic acid and acrylate can be homopolymerized or copolymerized, and can also be copolymerized with monomers such as acrylonitrile, styrene, butadiene, vinyl chloride and maleic anhydride. Its polymers are used in industrial fields such as synthetic resins, adhesives, synthetic rubber, synthetic fibers, superabsorbent resins, pharmaceuticals, leather, textiles, chemical fibers, building materials, water treatment, oil exploration, and coatings. Acrylic acid is one of the important raw materials for water-soluble polymers. It can...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/50C07C57/075
CPCC07C51/50C07C57/04
Inventor 张传好李川川郑展超蒋旭亮
Owner SHANGHAI CHEM REAGENT RES INST