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A preparing method of dicyclopentadiene hydrogenated petroleum resin

A technology of hydrogenated petroleum resin and dicyclopentadiene, which is applied in the field of preparation of dicyclopentadiene hydrogenated petroleum resin, and can solve the problems such as the decrease of petroleum resin yield

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The content of the gel is mainly related to the technical process. In the prior art, dicyclopentadiene is directly used as a raw material, or other modifiers are added, and the polymerization reaction is carried out at a certain temperature and pressure. Too much impurity or reaction heat is not removed in time, it will generate insoluble gel, terminate the growth of polymer chain, and reduce the yield of petroleum resin

Method used

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  • A preparing method of dicyclopentadiene hydrogenated petroleum resin
  • A preparing method of dicyclopentadiene hydrogenated petroleum resin
  • A preparing method of dicyclopentadiene hydrogenated petroleum resin

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Experimental program
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Embodiment

[0020] Embodiment [1-10]

[0021] 1) Under normal pressure, the crude dicyclopentadiene is decomposed into cyclopentadiene by reactive distillation, the temperature of the tower bottom is 170-190°C, the temperature of the tower top is 40-45°C, and the reflux ratio is 2-8;

[0022] 2) The high-purity cyclopentadiene obtained in step 1) is mixed with a solvent, and after mixing, part of the mixture (1 / 2) enters the reaction kettle for polymerization, and the remaining cyclopentadiene solvent mixture is 1.0 after the reaction begins. Add the same amount evenly after h and 2.0h; the mass ratio of cyclopentadiene to solvent is 1:0.5~1.5, the reaction pressure is 1.0~2.0MPa, the reaction time is 3~5h, and the reaction temperature is 230~260℃;

[0023] 3) The reaction solution obtained from step 2) enters the tubular reactor, and at the same time the catalyst and hydrogen are pre-mixed and then enters the tubular reactor, and reacts at a temperature of 150-250°C and a pressure of 3.0...

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Abstract

A preparing method of dicyclopentadiene hydrogenated petroleum resin is disclosed. The method mainly includes depolymerizing crude dicyclopentadiene into cyclopentadiene, mixing the cyclopentadiene and a solvent, feeding one part of the mixture into a reactor, reacting the one part of the mixture, adding the other part of the mixture in a batch manner after the reaction is started, and finally hydrogenating the reaction solution to prepare the hydrogenated petroleum resin. The method increases the product yield, ensures that the prepared resin is free of gel, sulfur and other impurities and can be directly used for hydrogenation without treatment, and prepares a hydrogenated petroleum resin product with excellent performance and stable quality under the premise of ensuring the service lifetime of a catalyst.

Description

technical field [0001] The invention relates to a method for preparing hydrogenated petroleum resin of dicyclopentadiene, in particular to a method for preparing hydrogenated petroleum resin with crude dicyclopentadiene as raw material. Background technique [0002] With the continuous development of various fields downstream of petroleum resins, the quality requirements for petroleum resins are also getting higher and higher. Among them, the development of adhesives and sealants, especially transparent pressure-sensitive tapes, outdoor sealants, disposable sanitary products, The application of medical tapes, road marking paints and polyolefin modifiers all require petroleum resins with light color, no odor and good stability. At present, the high-quality petroleum resin in the international market has a chroma of less than 2# and a softening point above 100°C. Hydrogenated petroleum resin technology is generally used, that is, petroleum resin is hydrogenated to convert unsa...

Claims

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Application Information

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IPC IPC(8): C08F240/00C08F8/04
Inventor 许惠明黄勇秦技强周飞胡国君吴卓祁正娟
Owner CHINA PETROLEUM & CHEM CORP
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