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Process for producting petruleum resin by hot polymerizing

A petroleum resin and thermal polymerization technology, applied in the field of thermal polymerization to produce petroleum resin, can solve the problems affecting product quality and chromaticity, the influence of thermal polymerization petroleum resin product application scope, and the high kettle temperature

Inactive Publication Date: 2009-06-17
天津天大天海化工新技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention reduces the molecular weight distribution range of the product by adding the C5 fraction, but still cannot solve the problem of deep color of the product
[0006] Because prior art can't well control polymerization progress, polymerization temperature, thereby can't well control the chromaticity and softening point of thermopolymerization petroleum resin, Gi's (Gardner) chromaticity is generally greater than 12 # , the distribution range of softening point is also large, which affects the application range of thermal polymer petroleum resin products
In addition, when the conventional distillation method is used to remove unpolymerized solvent components, due to the high temperature of the kettle and the high viscosity of the material, it is easy to accumulate locally, resulting in black spots and coking, which seriously affects the quality and color of the product.

Method used

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  • Process for producting petruleum resin by hot polymerizing
  • Process for producting petruleum resin by hot polymerizing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] See attached figure 1 , the I, II, and III obtained by distillation of the C9 raw material are all passed into the thermal polymerization kettle 1 (5), the temperature of the reactor 1 is controlled at 240°C, the pressure is 0.5MPa, and the residence time is 6h; the material in the thermal polymerization kettle 1 enters the thermal polymerization kettle 2(6), control the temperature of thermal polymerization kettle 2 to 250°C, pressure 1.0MPa, and residence time 6h; the material in thermal polymerization kettle 2 enters thermal polymerization kettle 3(7), control the temperature of thermal polymerization kettle 3 to 260°C, and pressure 1.5MPa , the residence time is 6h; the material in the thermal polymerization kettle 3 enters the thermal polymerization kettle 4 (8), and the temperature of the thermal polymerization kettle 4 is controlled at 280°C, the pressure is 2.1MPa, and the residence time is 6h. The material that comes out from thermal polymerization kettle 4 ent...

Embodiment 2

[0024] See attached figure 1, put I and III into the thermal polymerization kettle 1 (5), II into the thermal polymerization kettle 4 (6), control the temperature of the thermal polymerization kettle 1 at 210°C, the pressure of 0.2MPa, and the residence time of 4h; the material in the thermal polymerization kettle 1 Enter thermal polymerization kettle 2 (6), control thermal polymerization kettle 2 temperature 220°C, pressure 0.5MPa, residence time 4h; material in thermal polymerization kettle 2 enters thermal polymerization kettle 3 (7), control thermal polymerization kettle 3 temperature 230°C , pressure 0.8MPa, residence time 4h; material in thermal polymerization kettle 3 enters thermal polymerization kettle 4 (8), controls temperature of thermal polymerization kettle 4 to 230°C, pressure 1.0MPa, residence time 4h. The material coming out from the thermal polymerization kettle 4 enters the secondary falling film evaporator, falling film evaporator 1 (9) temperature 115 ° C,...

Embodiment 3

[0026] See attached figure 1 , pass I, III into thermal polymerization kettle 1 (5), and add the peracetic acid of raw material amount 0.01% in thermal polymerization kettle 1 as initiator, II pass into thermal polymerization kettle 3 (7), control thermal polymerization kettle 1 The temperature is 230°C, the pressure is 0.3MPa, and the residence time is 5h; the material in the thermal polymerization kettle 1 enters the thermal polymerization kettle 2 (6), and the temperature of the thermal polymerization kettle 2 is controlled at 240°C, the pressure is 0.8MPa, and the residence time is 5h; the thermal polymerization kettle 2 The material in the thermal polymerization kettle 3 (7), the temperature of the thermal polymerization kettle 3 is controlled at 250 ° C, the pressure is 1.2 MPa, and the residence time is 5h; the material in the thermal polymerization kettle 3 enters the thermal polymerization kettle 4 (8), and the thermal polymerization kettle 4 is controlled. The temper...

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Abstract

The present invention relates to hot polymerization process of producing petroleum resin, especially with C9 fraction as the side product of ethylene production. The C9 fraction material is first cut into three fraction sections including styrene resin oil, dicyclopentadiene resin oil and indene resin oil; and the three fraction sections are added into hot polymerization reaction kettle according to the requirement of the product for polymerizing, with the hot polymerization reaction kettle comprising four serially connected kettles with separate regulation on temperature, pressure, material retention time and other parameters. The product obtained through polymerization in the four serially connected kettles is distilled to eliminate solvent so as to obtain the petroleum resin product.

Description

technical field [0001] The invention relates to a method for producing petroleum resin by thermal polymerization, which is particularly suitable for producing petroleum resin by thermal polymerization of C9 fraction of ethylene by-product. Background technique [0002] C9 fraction is one of the main by-products of ethylene production, which can be used to produce petroleum resin, an important chemical product. At present, there are two main methods for producing petroleum resins using C9 fractions, one is cationic catalyzed low-temperature polymerization (abbreviated as cold polymerization method), and the other is heating-induced free radical polymerization method (abbreviated as thermal polymerization method). [0003] The production of C9 thermal polymerization petroleum resin by thermal polymerization is to use ethylene cracking dicyclopentadiene, methyl styrene and other active components in the C9 fraction to synthesize products through free radical polymerization unde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F240/00
Inventor 李崇廉燕李雪张冀鲁刘锋张大治张力擎王芳张曾
Owner 天津天大天海化工新技术有限公司
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