Method for producing C5 petroleum resin with chlorine alumine acid ion liquid catalyzed polymerization

Abstract

The invention relates to a method for using chlorine aluminic acid ion liquid to prepare C5 petroleum resin by catalyzing and polymerizing. C5 fraction is added into a dry and closed container or a container which has inactive gas protection , the temperature of 90 to 120 DEG C can be improved, and then the chlorine aluminic acid ion liquid with 0.8 to 3.0 percent of the C5 fraction quality is added under the mixing condition to polymerizing and reacting for 6 to 10 hours to get slumpability liquid; the gotten slumpability liquid is cooled at room temperature to be coagulated into brittle solid, and then crushed to superfines below 400 meshes, and soaked and processed by 0.5 percent of NaOH solution for 20 to 24 hours, and then washed by distilled water until neutrality, dried for 3 hours respectively in the vacuum of 80 DEG C and 150 DEG C after filtrating and eliminating most of water, and finally light colored C5 petroleum resin can be obtained. The invention overcomes flash polymerization and overflowing kettle phenomenon caused by using solid AlCl3 as a catalyst. The reaction process is gentle, and the reaction is easy to be controlled. The obtained petroleum resin product has stable performance and light color.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and relates to a kind of chloroaluminate ionic liquid catalytic polymerization to prepare light-colored C 5 Petroleum resin method. Background technique [0002] C 5 Petroleum resin is cracked C by-product of ethylene plant 5 Distillation is the resin obtained after separation and polymerization of raw materials. due to C 5 The composition of fractions is complex, and it changes with the changes of cracking raw materials, cracking depth, cracking equipment and other factors. The composition of different sampling times also varies greatly, which makes the quality control of petroleum resins quite difficult. How to effectively control the softening point and reduce the hue of petroleum resin products during polymerization and post-treatment is the key to stabilizing and improving product quality. Currently C 5 Petroleum resin production mostly uses pure anhydrous AlCl 3 or BF 3 The die...

AI Technical Summary

Problems solved by technology

Currently C 5 Petroleum resin production mostly uses pure anhydrous AlCl 3 or BF 3 The diethyl ether complex is a catalyst. Because the activity of the catalyst is too high, the cationic catalytic polymerization reaction is an exothermic reaction. If the heat of reaction cannot be removed in time, the reaction temperature will be too high, which will not only increase the volatilization loss of the reaction material, reduce the polymerization yield, but also make the The increase of the reaction rate will deepen the hue of the petroleum resin product and affect the quality of the product; at the same time, a large amount of gel will be generated, which will reduce the yield and softening point of the resin, and the hue will also be dark

[0003] Use solid AlCl 3 As a catalyst, there are many problems in production: 1. The polymerization time is too long, about 10 to 12 hours; 2. It is easy to cause sudden polymerization and overflow; 3. The consumption of catalyst is large; 4. The moisture content of raw materials Need to adjust with batch