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Functional copolymer directly prepared from higher olefin mixture and preparation method

A technology of hydrocarbon mixtures and copolymers, which is applied in the field of functional copolymers directly prepared from high-carbon hydrocarbon mixtures and its preparation, which can solve the problems of low penetration rate of C9 petroleum resin production, limited reuse of C9 distillate resources, and complicated processes and other problems, to achieve the effect of easy recycling and reuse, low toxicity and high preparation efficiency

Active Publication Date: 2016-09-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in daily industrial production, due to the complex production process of C9 petroleum resin, long production lines, and a large amount of industrial wastewater, the production penetration rate of C9 petroleum resin has been very low, which greatly limits the reuse of C9 fraction resources.

Method used

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  • Functional copolymer directly prepared from higher olefin mixture and preparation method
  • Functional copolymer directly prepared from higher olefin mixture and preparation method
  • Functional copolymer directly prepared from higher olefin mixture and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Using xylene as the solvent of the reaction system, 0.8g of maleic anhydride and 0.084g of azobisisobutyronitrile were dissolved in 2.0g of C8 fraction (see Table 1 for composition, olefin content 27.64%) and 6mL of xylene, and ultrasonically After fully dissolving and mixing uniformly, the mass ratio of MAH to C8 fraction in the reaction system is 0.40; the system is ventilated with nitrogen for 20 minutes, the reaction temperature is 70°C, and the reaction time is 6 hours. After the reaction was completed, the reaction product was centrifuged at 4000 rpm for 10 minutes, washed with petroleum ether, centrifuged three times, and vacuum-dried to constant weight to obtain 1.27 g of C8-MAH copolymer with a yield of 94.23%. .

[0034] The copolymer was analyzed for three elements of C, H and O, and the results are shown in Table 5. It can be seen that the content of C element in the obtained C8-MAH copolymer is about 72.06%, the content of H element is about 5.42%, and the...

Embodiment 2

[0036] Using the mixed solvent of isoamyl acetate and n-heptane as the solvent of the reaction system, 1.0 g of maleic anhydride and 0.090 g of azobisisobutyronitrile were dissolved in 4.0 g of C8 fraction (see Table 1 for composition, olefin content 27.64%) and 4 mL of acetic acid In isoamyl ester and 2 mL of n-heptane, after ultrasonically dissolving and mixing uniformly, the mass ratio of MAH to C8 fraction in the reaction system is 0.40; the system is blown with nitrogen for 20 minutes, the reaction temperature is 75°C, and the reaction time is 6 hours. After the reaction was completed, the reaction product was centrifuged at 4000 rpm for 10 minutes, washed with petroleum ether, and centrifuged three times. Vacuum drying to constant weight yielded 1.91 g of C8-MAH copolymer with a yield of 90.55%.

Embodiment 3

[0038] With isoamyl acetate as the solvent of the reaction system, 0.4 g of maleimide and 0.072 g of dicumyl peroxide were dissolved in 2.0 g of C8 fraction (see Table 1 for composition, olefin content 27.64%) and 2 mL of acetic acid In the isoamyl ester, ultrasonically dissolve and mix evenly, the mass ratio of maleimide to C8 fraction in the reaction system is 0.20; the system is blown with nitrogen for 20 minutes, the reaction temperature is 120°C, and the reaction time is 6 hours. After the reaction was completed, the reaction product was centrifuged at 4000 rpm for 10 minutes, washed with petroleum ether, and centrifuged three times. Vacuum drying to constant weight yielded 0.86 g of C8-maleimide copolymer with a yield of 90.05%.

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Abstract

The invention relates to a functional copolymer directly prepared from higher olefin mixture and a preparation method, and belongs to the field of application of petroleum resources. The preparation method includes: under the condition of nitrogen protection, adding one or more of MAH (maleic anhydride), maleimide and derivatives thereof and itaconic anhydride as well as oil soluble free radical initiator into selected solvent to be fully dissolved, then adding one or more of C8 and C9 fraction and light fraction of coal tar into the system to be mixed evenly, performing reaction at the temperature of 60-120 DEG C, and after reaction is finished, performing separating and drying to obtain the functional copolymer formed by copolymerization of olefin components and maleic anhydride in the mixture. C8 and C9 fraction and light fraction of coal tar are taken raw materials directly to be subjected to one-step reaction for preparing the copolymer comprising functional radicals, the process is simple, reaction conditions are mild, preparation efficiency is high, the prepared copolymer and non-polymerization components are easy to separate, the copolymer is high in functional radical content, and resources of C8 and C9 fraction and light fraction of coal tar can be utilized reasonably and effectively.

Description

technical field [0001] The invention belongs to the resource application field of C8 and C9 cuts and coal tar light cuts in petroleum cracking and reforming, and specifically relates to using these mixture cuts to directly combine with maleic anhydride (MAH), maleimide and derivatives thereof, clothing One or several reactions of canonic anhydride to prepare functional copolymers. Background technique [0002] The C8 and C9 fractions mainly come from steam cracking ethylene production process and naphtha platinum reforming process, and some of them come from toluene disproportionation or transalkylation products and coal tar, etc. Their compositions are shown in Table 1-4. [0003] Table 1. Composition of C8 fraction [0004] [0005] Table 2.C9 Fraction Composition [0006] [0007] [0008] Table 3. Composition of C9 fractions from different manufacturers [0009] [0010] Table 4. Composition of coal tar light fraction [0011] [0012] [0013] It c...

Claims

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Application Information

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IPC IPC(8): C08F222/08C08F222/06C08F222/04C08F222/40C08F2/06
CPCC08F2/06C08F222/04C08F222/06C08F222/08
Inventor 杨万泰陈延昭陈冬王力马育红
Owner BEIJING UNIV OF CHEM TECH
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