Isoprene modified dicyclopentadiene petroleum resin, and preparation method thereof

Abstract

The invention discloses an isoprene modified dicyclopentadiene petroleum resin, and a preparation method thereof. The isoprene modified dicyclopentadiene petroleum resin comprises a cyclopentadiene monomer, isoprene, an inert solvent, an antioxidant, an initiator and a terminator. The preparation method comprises the following steps: initiating the polymerization of the isoprene to prepare a 3,4-isoprene / 1,4-isoprene block oligomer, modifying cyclopentadiene polymerized petroleum resin, and purifying the modified petroleum resin to obtain the isoprene modified dicyclopentadiene petroleum resin. The modified petroleum resin has the advantages of good caking property, high softening point, greatly increased compatibility with elastomer material, low chroma, enlargement of the application range of petroleum resin, and good application values. The preparation method is simple and easy, and is suitable for being promoted and applied.

Description

technical field [0001] The invention relates to the technical field of petroleum resins, in particular to an isoprene-modified dicyclopentadiene petroleum resin and a preparation method thereof. Background technique [0002] Petroleum resin is a kind of thermoplastic resin polymerized from C5 and C9 fractions produced in the cracking process of ethylene as the main raw material. Most petroleum resin products are prepared by cationic catalyzed polymerization. This polymerization reaction requires cationic catalysts to be well dispersed. Otherwise, gel may be generated, resulting in uneven performance of the polymerized product. At the same time, the post-reaction treatment process is complicated and requires alkaline washing, neutralization, Washing, vacuum distillation / stripping, drying and other steps can get the final product. In the process of post-treatment, not only does the alkali washing consume a large amount of water, which causes environmental pollution, but also ...

AI Technical Summary

Problems solved by technology

In the process of post-treatment, not only does the alkali washing consume a large amount of water, which causes environmental pollution, but also there may be emulsification in the process of alkali washing and washing, which makes it more difficult to remove the catalyst, and even the removal is not complete. Product performance and subsequent hydrogenation process are unfavorable

[0003] Generally speaking, when petroleum resin products obtain a higher softening point, the chroma will deepen accordingly, and the darker chroma restricts the use of petroleum resin in certain fields. In order to obtain petroleum resin products with low chroma, it is necessary to carry out Hydrogenation upgrading process, but this process will reduce the softening point of petroleum resin to a certain extent, there is a certain contradiction between the two

[0004] Among them, dicyclopentadiene petroleum resin is a resin made of dicyclopentadiene in the carbon five fraction as the main raw material. It has the advantages of cheap and easy-to-obtain raw materials, high softening point, strong rigidity, and high brightness, so it is widely used in Rubber mixing, ink additives, paint coatings and adhesives, etc., but its use is limited due to its shortcomings such as deep hue, poor adhesion, and poor compatibility with elastomer materials. scope