Method of two-stage continuous polymerization production of petroleum resin

A technology of petroleum resin and polymerization kettle, which is applied in the field of two-stage continuous polymerization to produce C5 petroleum resin, which can solve the problems of low productivity, cumbersome operation and heavy labor in batch single-pot polymerization, and achieve operability and uniform mixing , Improve the effect of resin quality

Inactive Publication Date: 2012-10-03
FUSHUN QILONG CHEM
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Problems solved by technology

This kind of intermittent single-pot polymerization has low productivity, cumbersome operation and heavy labor

Method used

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  • Method of two-stage continuous polymerization production of petroleum resin
  • Method of two-stage continuous polymerization production of petroleum resin

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Embodiment Construction

[0015] As shown in the figure, both the polymerization kettle 1 and the delayed reaction kettle 2 are carbon steel kettles with a stirrer 7 inside and a circulating water jacket 6 outside, and their volumes are both 15 liters. The material residence time of the first and second stages of polymerization can be controlled by controlling the feed amount of the polymerization kettle 1, the liquid level of the polymerization kettle 1 and the delay reaction kettle 2; the circulating water volume of the circulating water jacket 6 of the polymerization kettle 1 and the external circulation heat exchange can be controlled The circulating water volume of the device 3 can control the polymerization reaction temperature of the first section; the cooling capacity of the condenser 4 can control the polymerization pressure of the first section. The temperature of the second-stage polymerization reaction can be controlled by controlling the water temperature and water volume in the circulating...

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Abstract

The invention discloses a method of two-stage continuous polymerization production of petroleum resin, which comprises the following steps of: (1) continuously adding raw materials for polymerization and catalyst into a polymerization reactor (1) for the first stage of polymerization, with the polymerization temperature of 55-75 DEG C, the polymerization pressure of 0.2-0.35MPa and the material retention time of 1-3 hour(s);(2)delivering the materials into a delay reactor (2) for the second stage of polymerization, with the polymerization temperature of 55-75 DEG C, the polymerization pressure of 0.2-0.35MPa and the material retention time of 0.5-2 hour(s); and (3)carrying out desorption of the materials with the catalyst and solvent to obtain the petroleum resin. Since the process of feeding materials or feeding the catalyst is eliminated, the concentration of the catalyst and active components for polymerization in the polymerization system is relatively stable. Compared with the single-stage continuous polymerization, the second stage of polymerization is added, the mixing in the polymerization reaction is more uniform, the heat of reaction can be removed promptly, the quality of the resin can be improved effectively, and C5 petroleum resin with narrow molecular weight distribution and small weight-average molecular weight can be obtained.

Description

1. Technical field [0001] The invention belongs to the technical field of petroleum resin synthesis, and in particular relates to a method for producing carbon five petroleum resin through two-stage continuous polymerization. 2. Background technology [0002] The production of petroleum resin is synthesized by polymerization reaction, and most of the polymerization methods used are batch single-pot polymerization. This kind of batch-type single-pot polymerization has low productivity, cumbersome operation and heavy labor. At the same time, the quality of the resin fluctuates greatly with batches in batch production, and the concentration of catalysts and polymerization active components varies widely during the reaction process, making the produced resin have a large molecular weight and a wide molecular weight distribution. 3. Contents of the invention [0003] The purpose of the present invention is to provide a method for the production of petroleum resin by two-stage ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F4/14
Inventor 谢志华
Owner FUSHUN QILONG CHEM
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