Preparation method of liquid modified aromatic hydrocarbon petroleum resin

A technology for the modification of aromatic petroleum resins, applied in the field of petroleum resins, can solve problems such as increased environmental impact, color number of liquid resin products, and unstable performance such as average molecular weight melt viscosity, etc., to achieve improved production efficiency, good catalytic activity, and high efficiency. The effect of the polymerization reaction

Pending Publication Date: 2020-06-05
HENGHE MATERIALS & SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at present, liquid resin is usually derived from the by-product of solid petroleum resin, and its production process is similar: inorganic acid or Lewis acid is used as catalyst, the reaction is mainly kettle type and batch reaction, and the post-treatment process needs to be washed by alkali-water Removing the catalyst will make the color number, average molecular weight, melt viscosity and other properties of the liquid resin product unstable, and produce a large amount of acid-base or halide-containing waste water in the process, which increases the impact on the environment

Method used

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  • Preparation method of liquid modified aromatic hydrocarbon petroleum resin
  • Preparation method of liquid modified aromatic hydrocarbon petroleum resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare and mix indene, styrene and piperylene at a mass ratio of 1:0.25:0.1, and then uniformly mix with methylcyclohexane accounting for 30% of the total mass of the material to obtain a polymeric raw material, which is first dried and dehydrated by alumina to the raw material water The content is 110ppm; then the foamed ceramics load phosphotungstic acid H 6 P 2 W 18 o 62 Catalyzed polymerization to obtain a polymeric resin liquid, the reaction temperature is 45°C, the reaction pressure is 110kPa, and the reaction time is 8h. The above-mentioned resin liquid is filtered through a packing tower to remove impurities, and then enters a rectification tower, and the solvent is removed at a vacuum degree of -0.090MPa and a temperature of 185°C to obtain Gardner color number 3.0#, and a melt viscosity (60°C) of 175mPa·s Liquid petroleum resin. The resin has good compatibility with IR, BR rubber, etc., and improves the cohesive strength of its products.

Embodiment 2～5

[0027] In Examples 2-5, indene, styrene and different C5 olefins were prepared in a mass ratio of 1:0.25:0.1, and the rest of the process conditions were the same as in Example 1.

[0028] Example 2 Example 3 Example 4 Example 5 C5 Olefin Monomer Isoprene Cyclopentadiene Isoamylene Cyclopentene Gardner shade number, # 3.2 3.9 1.9 2.3 Melt viscosity(60℃)mPa·s 238 118 57 104 DACP cloud point, ℃ -13 3 -5 10

[0029] The DACP cloud point, that is, the cloud point of diacetone alcohol, is to mix the resin, xylene and diacetone alcohol evenly in an equal mass ratio to obtain a mixed sample; then the above sample is heated and cooled with the furnace, and the temperature when the solution is completely cloudy as a measure. This indicator reflects the polarity of the resin itself. Too high DACP cloud point will affect the initial compatibility with elastomers such as NR, SIS, SBS, SBR, etc., which will lead to the reductio...

Embodiment 6

[0033] Prepare and mix methylindene, α-methylstyrene and piperylene at a mass ratio of 1:0.40:0.05, and then uniformly mix with methylcyclohexane accounting for 35% of the total mass of the material to obtain a polymerization raw material, which is first oxidized The aluminum is dried and dehydrated until the water content of the raw material is 120ppm; then, the polymer resin liquid is obtained by catalytic polymerization of dodecaphosphomolybdic acid supported on foam ceramics, the reaction temperature is 60°C, the reaction pressure is 114kPa, and the reaction time is 5h. The above-mentioned resin liquid is filtered through a packed tower to remove impurities, and then enters a rectification tower, and the solvent is removed at a vacuum degree of -0.090MPa and a temperature of 185°C to obtain a Gardner color number of 0.9#, and a melt viscosity (60°C) of 267mPa·s Liquid petroleum resin. The resin has high melt viscosity and is suitable for toughening modification of high sti...

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Abstract

The invention relates to a preparation method of liquid modified aromatic hydrocarbon petroleum resin. The preparation method comprises the following steps: mixing indene, styrene and a C5 olefin saturated solvent to obtain a polymerization raw material, carrying out catalytic polymerization on the polymerization raw material by using a foamed ceramic supported solid acid catalyst to obtain a polymerization resin liquid, adsorbing, filtering, and rectifying to remove the solvent, thereby obtaining the liquid modified aromatic hydrocarbon petroleum resin. The preparation method is simple and convenient in process and mild in polymerization conditions, waste gas, waste solids, and waste liquid are reduced, and the obtained liquid modified resin has good compatibility and is suitable for thefields of rubber mixing, plastic modification and the like.

Description

technical field [0001] The invention belongs to the field of petroleum resins, in particular to a preparation method of liquid modified aromatic petroleum resins. Background technique [0002] There are abundant polymerizable monomers in the C9 fraction of ethylene cracking, such as styrene, methylstyrene, dicyclopentadiene, indene, etc. The aromatic hydrocarbon petroleum resin obtained by thermal free radical polymerization or Lewis acid catalyzed polymerization with the above components has excellent viscosity-increasing performance, has a certain polarity, and has good compatibility with various rubbers and elastomers, and can Improve the viscosity, strength and ductility of its products. [0003] Liquid aromatic petroleum resin is a special petroleum resin with low softening point and average molecular weight and fluidity at room temperature. It is an excellent rubber tackifier and hot melt adhesive agent developed in recent years, and has broad market application poten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F4/02C08F4/22C08F6/06
CPCC08F240/00C08F4/02C08F4/22C08F6/06
Inventor 王斌孙向东
Owner HENGHE MATERIALS & SCI TECH CO LTD
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