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Process for producing high-grade pentadiene petroleum resin

A petroleum resin and production process technology, applied in the field of high-grade piperylene petroleum resin production process, can solve the problems of poor thermal stability and initial adhesion, low softening point of petroleum resin, unstable quality indicators, etc., and achieve thermal stability Good performance and weather resistance, reduce the amount of three-degree treatment, shorten the effect of sedimentation and separation time

Inactive Publication Date: 2008-03-05
上海奔骅化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] According to foreign published patents and relevant data reports, because of the difference in raw material specification and composition, polymerization reaction mode, polymerization reaction liquid treatment method and precipitation stripping process, make C 5 The technical quality indicators of petroleum resin products are quite different, and it is considered that the C 5 Raw materials and insufficiently advanced technological routes, the production of petroleum resin has a low softening point, darker color, higher ash content, low transparency, poor thermal stability and initial adhesion, high melt viscosity, and unstable overall quality indicators , the reaction yield is generally low, generally between 30-75%, which greatly limits the application and development of products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] in 2M 3 Add 1053kg piperylene raw material in the metering tank, its composition is the same as Comparative Example 1, add 119kg (monoolefin content is 72.48%) crude isopentene and mix, be mixed with C 5 The olefin content (wt%) is 89.56% of the copolymerization reaction raw material liquid.

[0042] In the preparation tank, the alkaline aqueous solution and the washing aqueous solution are prepared for use, and the composition (wt%) is as follows:

[0043] Alkaline aqueous solution: NaOH 5%, phenolamine resin alkylene oxide complex adduct 0.018%.

[0044] Washing water solution: 0.012% compound of phenolic amine resin alkylene oxide adduct.

[0045] at 3M 3 In the glass-lined tank reactor with external circulation reaction system, add complex complex catalyst 27kg (wherein AlCl 3 containing 38%), add recovery C 5 Solvent 700Kg, with N 2 After blowing and blowing, start stirring and raise the temperature to stabilize the pressure. Use a pump to meter and add the c...

Embodiment 2

[0048] The production process is the same as in Example 1, the composition of the raw materials is the same as in Comparative Example 2, and the composition of the alkaline aqueous solution and the washing aqueous solution is the same as in Example 1.

[0049] Piperylene raw material 1000kg, with 197kg (monoolefin content is 72.48%) crude isopentene is formulated into 5 Olefin content (wt%) is 89.06% copolymerization reaction raw material liquid, complex catalyst 28.5kg, reclaims C 5 Solvent oil is the polymerization solvent, the reaction temperature is 70-75°C, and the reaction pressure is 0.1-0.16Mpa.

[0050] The piperylene petroleum resin has a softening point of 115°C, a Gardner color of No. 5, is transparent and bright, a melt viscosity of 240cps / 200°C, and a reaction yield of 97.85%.

Embodiment 3

[0052] The production process is the same as in Example 1, and the composition of the alkaline aqueous solution and the washing aqueous solution is also the same as in Example 1.

[0053] Piperylene raw material 1000kg, composition (wt%); piperylene 67.63% (trans-p: Cis-p=1.7) cyclopentene, cyclopentane 31.56%, dicyclopentadiene, cyclopentadiene 0.81 %, add 119kg (monoolefin content is 64%) crude isopentene to prepare C 5 The olefin content (wt%) is 86.30% of the copolymerization reaction raw material liquid. 30kg of complex catalysts (wherein AlCl 3 containing 40%), recycling C 5 The solvent (600Kg) is a polymerization solvent, the reaction temperature is 64-68°C, and the reaction pressure is 0.08-0.14Mpa.

[0054] The piperylene resin has a softening point of 94°C, a Gardner chromaticity of No. 4, is transparent and bright, a melt viscosity of 80cps / 200°C, and a reaction yield of 96.43%.

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Abstract

The present invention is production process of high grade piperyene petroleum resin. The piperyene petroleum resin is produced with separated and purified C5 cracking fraction rich in diolefin and coarse pentene to form the copolymerization material liquid in C5 olefin content of 80-92 wt%, AlCl3, main solvent and cosolvent mixed to react to produce cationic complex polymerization catalyst, and recovered C5 fraction as polymerization solvent, and through polymerization at 10-80 deg.c and 0.03-0.40 MPa for 2-5 hr, and neutralization and water washing after polymerization. The piperyene petroleum resin has high softening point, low color hue, high transparency, low melt viscosity, high heat resistance and high weather resistance. The production process has reaction yield up to 92-96 % and low production cost.

Description

technical field [0001] The invention relates to a high-grade piperylene petroleum resin production technology with high softening point, low chroma, good heat resistance and weather resistance, and high reaction yield. Background technique [0002] cleavage C 5 It is a by-product of ethylene plant. In 2003, my country cracked C 5 The output is about 836,000 tons. By 2010, with the new ethylene plant put into operation in my country, the domestic cracking C 5 The output will reach 2 million tons. cleavage C 5 The active component olefin content in the fraction accounts for about 50-60%wt, without separation or preliminary separation C 5 Distillation and separation and purification C 5 Components can be catalytically polymerized to produce Hybrid C 5 Petroleum resin, Aliphatic C 5 Petroleum resin (piperylene petroleum resin), dicyclopentadiene petroleum resin, C 5 Copolymer resins and hydrogenated petroleum resins with other copolymers are widely used in hot melt adhes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F236/08
Inventor 张春涛徐伯坤
Owner 上海奔骅化工有限公司
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