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Aluminum trichloride/nucleophilic reagent composite catalystic system and its use in synthesizing petroleum resin

A technology of nucleophilic reagent and catalytic system, which is applied in the field of catalytic system compounded by aluminum trichloride and nucleophilic reagent, can solve the problems of different polymerization phenomena and results, complicated shape of aluminum trichloride, uneven particle size, etc., and achieve Easy post-processing, conducive to safe production, low viscosity effect

Active Publication Date: 2007-04-11
SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the direct use of aluminum trichloride catalyst has many disadvantages, such as aluminum trichloride solid powder is easy to absorb water in the air, resulting in difficulty in feeding and inaccurate metering. In addition, aluminum trichloride itself has complex shapes and uneven particle sizes. It is easy to condense into agglomerates in monomer raw materials
Conventional stirring is difficult to ensure the same dispersion state each time, resulting in different polymerization phenomena and results in the same formula, and the production process is unstable
[0005] Chinese patent 97107458.5 discloses a composite catalytic system suitable for the synthesis of carbon five petroleum resins. The composite catalytic system uses two components: A, aromatic ether compounds, mainly diphenyl ether; B, AlCl 3 , the two components are prepared in a certain solvent such as pentane, hexane, toluene, xylene, chloroform, etc. Compared with the single-component catalyst, the C5 resin synthesized by this composite catalytic system has a higher softening point And better compatibility, but there is also the phenomenon of unstable production process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1. Preparation of composite catalytic system: Mix anhydrous aluminum trichloride powder and anisole at a weight ratio of 1:2 at room temperature, and stir at room temperature for 30 seconds to form a homogeneous transparent solution.

[0020] Polymerization of petroleum resin: the composite catalyst prepared above is added to 90°C C with a weight ratio of 3:200 10 In the monomer raw material, stir (speed 200rpm), slowly raise the temperature to 130°C, react for 6 hours, then raise the reaction temperature to 150°C, react for 6 hours, after the reaction is completed, the reaction product is washed with alkali, washed with water, and decompressed Unhydrogenated petroleum resin is obtained after distillation workup. It was determined that the conversion rate of the resin was 77%, the softening point was 116° C., the chromaticity was 16, the number average molecular weight was ˜410, and the molecular weight distribution index (Mw / Mn) was 1.57.

Embodiment 2

[0021] Example 2. Preparation of composite catalytic system: Mix anhydrous aluminum trichloride powder and phenetole at a weight ratio of 1:5 at room temperature, and stir for 1 min to form a uniform transparent solution.

[0022] Polymerization of petroleum resin: the composite catalyst prepared above is added to 90°C C with a weight ratio of 5:200 5 In the monomer raw material, stir (rotating speed 200rpm), slowly raise the temperature to 125°C, react for 6 hours, then raise the reaction temperature to 145°C, react for 6 hours, and then end the reaction. After the reactant is washed with alkali, washed with water and distilled under reduced pressure, the unhydrogenated petroleum resin is obtained. The conversion rate of the resin was 65%, the softening point was 113°C, the chroma was 16, the number average molecular weight was ~400, and the molecular weight distribution index (Mw / Mn) was 1.6.

Embodiment 3

[0023] Example 3. Preparation of composite catalytic system: Mix anhydrous aluminum trichloride powder and ethyl benzoate at a weight ratio of 1:5 at room temperature, and stir for 2 minutes to form a uniform transparent solution.

[0024] Polymerization of petroleum resin: the composite catalyst prepared above is added to 90° C. 9 Stir in the monomer raw material (rotating speed 200rpm), slowly raise the temperature to 130°C, react for 6 hours, then raise the reaction temperature to 145°C, react for 6 hours, and then end the reaction. After the reactant is washed with alkali, washed with water and distilled under reduced pressure, the unhydrogenated petroleum resin is obtained. The softening point of the resin was 84°C, the number average molecular weight was ~289, and the molecular weight distribution index (Mw / Mn) was 1.49.

[0025] The embodiment of using aluminum trichloride and other nucleophilic reagents to prepare the composite catalytic system is the same as above, a...

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Abstract

The present invention discloses one kind of petroleum resin synthesizing catalyst system comprising aluminum trichloride and nucleohilic reagent at the weight ratio of 1 / 10-1 / 2 and forming homogeneous transparent solution through mixing at room temperature. The composite catalyst system has homogeneously dispersed aluminum trichloride and capacity of stabilizing the synthesizing process, and the polymerized system has relatively low viscosity and easy post-treatment. The petroleum resin synthesized with the catalyst system has high softening point of 85-120 deg.c, high compatibility, active component converting rate of 60-85 %, average molecular weight of 300-600 and expanded use range.

Description

technical field [0001] The invention relates to a composite catalytic system used in petroleum resin polymerization, in particular to a composite catalytic system of aluminum trichloride and nucleophilic reagent. Background technique [0002] Petroleum resin is the cracking fraction C of the by-product of ethylene plant 5 Solid or viscous liquid polymers with a relative molecular weight below 2000, which are prepared for the polymerization of raw materials, have the characteristics of low acid value, good miscibility, low melting point, good adhesion, water resistance and chemical resistance. Petroleum resins can be used as adhesives, inks, rubber tackifiers, paper sizing agents and additives for various coatings. [0003] due to C 5 The composition of monomer raw materials is relatively complex (including cyclodiene: such as cyclopentadiene, dicyclopentadiene; diene: such as isoprene, cis or trans piperylene; monoene: such as isobutene, 1- Butene, cis or trans 2-butene, ...

Claims

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Application Information

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IPC IPC(8): C08F240/00C08F4/52
Inventor 潘广勤夏和生张耀亨卢灿辉李亮张军华齐永新崔树勋刘秀兰刘鹏波曹耀强毛兵肖军黄英张霖张英杰
Owner SINOPEC LANZHOU GASOLINEEUM CHEM IND CORP
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