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Process for producting petruleum resin by hot polymerizing

A petroleum resin and thermal polymerization technology, which is applied in the field of thermal polymerization to produce petroleum resin, can solve the problems of easy local accumulation, inability to control the polymerization progress, polymerization temperature, and the influence of the application range of thermally polymerized petroleum resin products.

Inactive Publication Date: 2007-07-18
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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Referring to accompanying drawing 1, I, II, III that C9 raw material distillation obtains are all passed into thermal polymerization kettle 1 (5), control reactor 1 temperature 240 ℃, pressure 0.5MPa, residence time 6h; The material in thermal polymerization kettle 1 Enter thermal polymerizer 2 (6), control thermal polymerizer 2 temperature 250 ℃, pressure 1.0MPa, residence time 6h; The material in thermal polymerizer 2 enters thermal polymerizer 3

[0023] (7), control thermal polymerization kettle 3 temperature 260 ℃, pressure 1.5MPa, residence time 6h; Material in thermal polymerization kettle 3 enters thermal polymerization kettle 4 (8), control thermal polymerization kettle 4 temperature 280 ℃, pressure 2.1MPa, The residence time is 6h. The material that comes out from thermal polymerization kettle 4 enters secondary falling film evaporator, falling film evaporator 1 (9) temperature 170 ℃, pressure is normal pressure, falling film evaporator 2 (10) temperature 190 ...

Embodiment 2

[0025] Referring to accompanying drawing 1, pass I, IH into thermal polymerization kettle 1 (5), II pass into thermal polymerization kettle 4 (6), control thermal polymerization kettle 1 temperature 210 ℃, pressure 0.2MPa, residence time 4h; Thermal polymerization kettle The material in 1 enters the thermal polymerization kettle 2 (6), the temperature of the thermal polymerization kettle 2 is controlled at 220°C, the pressure is 0.5MPa, and the residence time is 4h; the material in the thermal polymerization kettle 2 enters the thermal polymerization kettle 3

[0026](7), control thermal polymerization kettle 3 temperature 230 ℃, pressure 0.8MPa, residence time 4h; Material in thermal polymerization kettle 3 enters thermal polymerization kettle 4 (8), control thermal polymerization kettle 4 temperature 230 ℃, pressure 1.0MPa, The residence time is 4h. The material coming out from the thermal polymerization kettle 4 enters the secondary falling film evaporator, falling film eva...

Embodiment 3

[0028] Referring to accompanying drawing 1, I, III are passed into thermal polymerization kettle 1 (5), and in thermal polymerization kettle 1, add the peracetic acid of raw material amount 0.01% as initiator, II passes into thermal polymerization kettle 3 (7), Control thermal polymerization kettle 1 temperature 230 ℃, pressure 0.3MPa, residence time 5h; Material in thermal polymerization kettle 1 enters thermal polymerization kettle 2 (6), control thermal polymerization kettle 2 temperature 240 ℃, pressure 0.8MPa, residence time 5h; The material in the thermal polymerization kettle 2 enters the thermal polymerization kettle 3 (7), and the temperature of the thermal polymerization kettle 3 is controlled at 250°C, the pressure is 1.2MPa, and the residence time is 5h; the material in the thermal polymerization kettle 3 enters the thermal polymerization kettle 4 (8), and the control The thermal polymerization tank 4 has a temperature of 250° C., a pressure of 1.5 MPa, and a reside...

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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 Applications(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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