Process for producting petruleum resin by hot polymerizing

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...

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