Catalytic system for synthesizing piperylene petroleum resin and preparation method for piperylene petroleum resin

A technology of petroleum resin and catalytic system, which is applied in the field of preparation of piperylene petroleum resin catalytic system and piperylene petroleum resin, can solve the problems of reduced catalyst system activity, unstable production process, and high chlorine content of resin, and achieves Good compatibility, low Z-average molecular weight, and stable quality

Active Publication Date: 2016-02-24
NINGBO JINHAI CHENGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of halogenated hydrocarbons in this system as high as 1wt% to 4wt%, the resulting resin has a high chlorine content and deteriorates the hue
[0006] CN1197808A and CN101319016B proposed that AlCl 3 / nucleophile composite catalytic system, to a certain extent, improves the compatibility of C5 resin, but because the nucleophilic reagent in the above composite catalytic system is easy to mix with AlCl 3 Complexation, and the addition amount is large, if it is industrialized, it will easily lead to a decrease in the activity of the catalyst system, so there is a problem of unstable production process

Method used

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  • Catalytic system for synthesizing piperylene petroleum resin and preparation method for piperylene petroleum resin
  • Catalytic system for synthesizing piperylene petroleum resin and preparation method for piperylene petroleum resin

Examples

Experimental program
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Effect test

Embodiment 1

[0032] The mixture 500g of C5 diolefins and C5 monoolefins obtained by separation of petroleum cracking by-products, the weight ratio of C5 diolefins and C5 monoolefins is 0.68, add 0.5g chloro-tert-butane (0.1wt%) and 0.15g acetone (DN =17.0, the molar ratio of acetone and chloro-tert-butane is 0.5), and diluted to 60wt% with toluene to obtain the first mixture.

[0033] Replace the 2L reactor with stirring with nitrogen, add 100g of toluene and 5.0g of powdered aluminum trichloride, then heat the reactor, when the temperature rises to 50-60°C, start adding the first mixture with a metering pump, the first The mixture was fed at a rate of 20 g / min and then held at 450 rpm for 2 hours.

[0034] After the reaction, the reaction product was washed with water until the pH of the aqueous solution was neutral, and the catalyst was removed. Remove the water phase through a separatory funnel, move the oil phase to a three-necked flask, heat to 140-150°C at normal temperature and pre...

Embodiment 2

[0044] Chloro-tert-butane add-on is 1.5g (0.3wt%) and acetone (DN=17.0, the mol ratio of acetone and chloro-tert-butane is 0.4) add-on is 0.38g, all the other are identical with embodiment 1, obtain The piperylene petroleum resin has a softening point of 96°C, a Mz of 3100, a molecular weight distribution D of 1.48, and a hue of 2.6 (Gardner).

Embodiment 3

[0046] Replace acetone with ethyl acetate (DN=17.1, the mol ratio of ethyl acetate and chloro-tert-butane is 0.5), and the addition is 0.23g, and all the other contents are the same as in Example 1, and the piperylene petroleum resin obtained softens The point is 98° C., the Mz is 3400, the molecular weight distribution D is 1.53, and the hue is 2.5 (Gardner).

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Abstract

The invention relates to a catalytic system for synthesizing piperylene petroleum resin and a preparation method for piperylene petroleum resin. The system is characterized by comprising Lewis acid, tertiary carbon chlorohydrocarbon and an electron donor ED. The dosage of the Lewis acid is 0.5-3wt%, the dosage of tertiary carbon chlorohydrocarbon is 0.05-0.5wt%, and the molar ratio of tertiary carbon chlorohydrocarbon to the electron donor is 0.05-1.0; the electron donor ED is selected from an ether compound, a carboxylate compound or a ketone compound and the DN value ranges from 5 to 20. According to the catalytic system and the preparation method for piperylene petroleum resin provided by the invention, by adopting a novel catalytic system, the piperylene petroleum resin which is good in compatibility, relatively shallow in hue, low in Z-average molecular weight and narrow in distribution can be obtained on the premise of not changing a conventional cationic polymerization process of piperylene petroleum resin.

Description

technical field [0001] The invention relates to a high polymer synthesis catalyst and a high polymer preparation method, in particular to a piperylene petroleum resin catalytic system and a preparation method of the piperylene petroleum resin. Background technique [0002] Piperylene petroleum resin is an important C5 petroleum resin, which is characterized by low acid value, good miscibility, good adhesion, water resistance, ethanol resistance and chemical resistance because of its main chain aliphatic hydrocarbon structure. Widely used in hot melt adhesive, rubber, paint, ink, road paint and paper making industries. [0003] Lewis acid co-initiated cationic polymerization of olefins to prepare piperylene petroleum resin is a well known method. Such Lewis acids are usually halides of aluminum, iron, antimony, titanium, boron, etc. Since Lewis acids themselves have low initiation activity, they generally need to be used in combination with water, protonic acids or alkyl hal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F4/14C08F4/16C08F4/20C08F4/10
Inventor 徐科杰刘奕熊立群
Owner NINGBO JINHAI CHENGUANG CHEM
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