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Synthesis method of light chroma C9 petroleum resin

A technology of petroleum resin and synthesis method, which is applied in the field of synthesis of light-colored C9 petroleum resin, which can solve the problems of a large amount of fluorine-containing waste alkaline water, high catalyst cost, and low resin yield, and achieve the improvement of resin yield and oil dissolution The effect of strong resistance and uniform molecular weight distribution

Inactive Publication Date: 2010-03-03
广东新华粤石化集团股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the catalytic reaction process, the speed of catalyst addition should be controlled to prevent the formation of colloid from affecting the color phase or the reaction speed is small and the yield is low; after the polymerization is completed, the catalyst needs to be removed by alkali washing, the process is complicated and a large amount of fluorine-containing waste alkali water and alkali residue are produced , causing serious environmental pollution; catalyst cost is high, resin yield is low, generally 25-40%, and resin hue is generally ≥9#

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Using refined C9 with a distillation range of 80-190°C in the C9 fraction produced by ethylene cracking as a raw material, the raw material contains 8% styrene and 30% dicyclopentadiene.

[0021] A 5% by weight solvent sodium hydroxide solution was added to the raw material, and the added amount accounted for 30% of the raw material. After extraction, washing, sedimentation and separation, then water washing until neutral; the operating temperature of extraction and washing is 40°C.

[0022] In a 2L pressure reaction kettle, add 1000g of refined C9 after the above treatment, replace the air in the kettle with nitrogen, prefill the pressure with 0.5Mpa, slowly heat to 260℃, maintain the reaction pressure at 0.8~1.0Mpa, and react at a constant temperature for 24h After cooling down to 120°C and discharging, and then distillation under reduced pressure, the operating conditions are: steaming to 290°C under -0.085Mpa to remove unreacted monomers and oligomers to prepare resin pro...

Embodiment 2

[0024] Using refined C9 with a distillation range of 80-190°C in the C9 fraction produced by ethylene cracking as a raw material, the raw material contains 8% styrene and 30% dicyclopentadiene.

[0025] Add 15% by weight of the solvent sodium hydroxide solution to the raw material, the added amount accounts for 15% of the raw material, after extraction, sedimentation and separation and then water washing until neutral; the operating temperature of extraction and washing is 40°C.

[0026] In a 2L pressure reaction kettle, add 1000g of refined C9 after the above treatment, replace the air in the kettle with nitrogen, pre-fill the pressure with 0.5Mpa, slowly heat up to 220℃, maintain the reaction pressure at 0.8~1.0Mpa, after 24h constant temperature reaction The temperature is lowered to 120°C and the material is discharged, and then the vacuum distillation is carried out. The operating conditions are: steam to 290°C at -0.085MPa to remove unreacted monomers and oligomers to prepare ...

Embodiment 3

[0028] Using refined C9 with a distillation range of 80 to 190°C in the C9 fraction produced by ethylene cracking as a raw material, the raw material has a styrene content of 7% and a dicyclopentadiene content of 35%.

[0029] Add 5% by weight of the solvent sodium hydroxide solution to the raw material, the added amount accounts for 30% of the raw material, and then wash until neutral after extraction, sedimentation and separation; the operating temperature of extraction and washing is 40°C.

[0030] In a 2L pressure reaction kettle, add 1000g of refined C9 after the above treatment, replace the air in the kettle with nitrogen, prefill the pressure with 0.5Mpa, slowly heat to 260℃, maintain the reaction pressure at 0.8~1.0Mpa, and react at a constant temperature for 24h After the temperature is lowered to 120°C, the material is discharged, and then the vacuum distillation is carried out. The operating conditions are: steam to 290°C at -0.085MPa to remove unreacted monomers and olig...

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Abstract

The invention discloses a synthesis method of light chroma C9 petroleum resin. Fine C9 of 80-190 DEG C in distillation range of C9 distillate of the ethane cracking byproduct is taken as raw material;after solvent extraction, settlement separation and washing to be neutral, thermal telomerization is performed for 8-48 hours at the temperature of 210-280 DEG C and the pressure of 0.5-2.0 MPa; then, the product can be obtained after removing un-reacted monomer and oligomer; and the solvent is one of or the mixture of parts of sodium hydroxide, potassium hydroxide, ammonium hydroxide and ethanolamine solution. The invention needs no catalyst, saves the post-treatment processes after removing catalyst, has no waste residues, and has no environment pollution problem caused by discharging alkali waste water containing fluorine. The invention improves resin yield, improves product quality, has lower production energy consumption and material consumption and has wide resin application range.

Description

Technical field [0001] The invention relates to a method for synthesizing light-color C9 petroleum resin. Background technique [0002] At present, the synthesis of light-color C9 petroleum resin generally adopts acid-catalyzed polymerization method, and acid-catalyzed polymerization generally adopts Lawis acid or proton acid (generally BF 3 ) Is a polymerization catalyst, that is, 0.4 to 2% of the raw material is added to react at -5 to 40°C for 2 to 10 hours. In the catalytic reaction process, the catalyst addition rate should be controlled to prevent the formation of colloids from affecting the hue or the reaction rate is low and the yield is low; after the polymerization is completed, alkali elution is required to remove the catalyst. The process is complicated and a large amount of fluorine-containing waste alkali water and alkali residue are generated. , Causing serious environmental pollution; high catalyst cost, low resin yield, generally 25-40%, resin hue generally ≥9#. ...

Claims

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Application Information

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IPC IPC(8): C08F240/00C08F232/08C08F212/08C08F2/04
Inventor 阚一群谭宁梅叶富强庞海舰谢美妮
Owner 广东新华粤石化集团股份公司
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