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Preparation method of high aromatic hydrocarbon hydrogenated resin

A technology of hydrogenated resin and high aromatic hydrocarbons, applied in the field of petroleum resin, can solve the problems of ethylene tar utilization rate, final product stability defect, complex ethylene tar components, etc. Effect

Active Publication Date: 2020-08-28
HENGHE MATERIALS & SCI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the complexity of the components of ethylene tar, the above process has defects in the utilization rate of ethylene tar and the stability of the final product

Method used

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  • Preparation method of high aromatic hydrocarbon hydrogenated resin
  • Preparation method of high aromatic hydrocarbon hydrogenated resin
  • Preparation method of high aromatic hydrocarbon hydrogenated resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] (1) Distill and cut ethylene tar to obtain Fraction A with a distillation range of 180-260°C, and pass through an alumina packing bed to reduce the colloid to 20ppm.

[0050] (2) Mix the above-mentioned fraction A with C5 monoolefins in a mass ratio of 1:0.15 to obtain ingredient B, wherein ingredient B consists of: 0.26% of 1-pentene, 1.13% of 2-pentene, 2-methyl-1-butene ene 1.87%, 2-methyl-2-butene 2.65%, cyclopentene 0.59%, methyl styrene 0.60%, dihydrodicyclopentadiene 1.04%, indene 4.27%, methyl indene 15.43%, dimethyl Indene 6.68%, naphthalene 26.51%, methylnaphthalene 9.06%, dimethylnaphthalene 4.55%, and the rest are inert components. Put 40% xylene and 0.7% boron trifluoride diethyl ether catalyst into the stirred reactor in advance, then add ingredient B dropwise at -5°C, react for 2 hours, and obtain a polymerization solution.

[0051] (3) Wash the polymerization liquid in step (2) with alkali, then wash with water to neutrality, and remove the catalyst (10...

Embodiment 2～6

[0056] The ratio between the ethylene tar cut fraction A and the C5 monoolefins in the polymerization feed is a key factor in the process of the present invention. The following table 3 shows the effect of the main polymerizable monomers in the ingredient B after mixing the two on the performance of the resin product; other conditions are the same as in Example 1.

[0057] table 3

[0058]

[0059] From the above-mentioned Examples 2-6, it can be seen that with the increase of the total content of C5 monoolefins in the ingredient B, the softening point, Gardner color number, and aromaticity of the hydrogenated resin all decrease, while the molecular weight distribution Mw / Mn tends to increase; when the ingredient When there is no C5 monoolefin as a modifier, the hydrogenated resin has the maximum aromaticity. The hydrogenated resin has a suitable aromaticity and molecular weight distribution, which can effectively enhance the compatibility with elastomers such as SBS and S...

Embodiment 7～10

[0061] The following table 4 is based on the steps (1) to (3) of Example 1, adjusting a section of Fe-Mo / γ-Al 2 o 3 The hydrogenation catalytic process conditions were investigated to investigate its influence on the performance of the hydrogenated resin. All the other conditions are the same as in Example 1.

[0062] Table 4

[0063]

[0064] It can be known from the above Examples 7-10 that in the one-stage hydrogenation process, the hydrogenation temperature has a more obvious influence on the properties of the hydrogenated resin. The one-stage hydrogenation process can strengthen the hydrogenation depth of the hydrogenated resin, increase the thermal cracking tendency of the resin, reduce the softening point and molecular weight distribution, and decrease the aromaticity.

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Abstract

The invention relates to a preparation method of high aromatic hydrocarbon hydrogenated resin. The preparation method comprises the processes of fraction cutting, pretreatment, catalytic polymerization, two-stage hydrogenation and the like. The high aromatic hydrocarbon hydrogenated resin has excellent compatibility with SBS, SIS and other elastomers, and is suitable for the fields of hot melt adhesives, coatings, rubber modification and the like.

Description

technical field [0001] The invention belongs to the field of petroleum resins, in particular to a preparation method of high aromatic hydrogenated resins. Background technique [0002] Ethylene cracking tar is the high-temperature condensation product of ethylene cracking raw materials and products during steam cracking. The conventional distillation range is 380-500°C, and the fraction before 350°C accounts for about 30-40%. The composition of ethylene pyrolysis tar is extremely complex, among which there are relatively high content of indene, methylindene and their homologues, naphthalene, methylnaphthalene, ethylnaphthalene, dimethylnaphthalene, anthracene, erne, and phenanthrene. Due to its complex components and difficult treatment, it is mainly used as a raw material for the production of naphthalene and carbon black, and can also be used as fuel for industrial boilers, with low economic value. [0003] CN102234538B discloses a method for hydrotreating ethylene tar. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F8/04B01J23/44B01J23/881B01J35/00
CPCC08F8/04B01J23/881B01J23/44C08F240/00B01J23/6525B01J25/02C08F212/08B01J35/40C08F212/12C08F212/32C08F232/08C08F232/02C08F210/14
Inventor 王斌孙向东
Owner HENGHE MATERIALS & SCI TECH CO LTD
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