Method for preparing light-color piperlene petroleum resin

A technology of petroleum resin and manufacturing method, which is applied in the direction of mineral oil hydrocarbon copolymer adhesives, adhesive types, etc., which can solve the problems of deterioration of hue, high addition amount of halogenated hydrocarbons, etc., and achieve stable product quality , Low Z-average molecular weight, good compatibility

Inactive Publication Date: 2015-01-21
NINGBO JINHAI CHENGUANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the patent US4068062 provides a method that introduces active halogenated hydrocarbons (RX) into the reaction system, and the compatibility of C5 petroleum resin synthesized by AlCl3 / RX composite catalytic system is improved to a certain extent , but because the addition of halogenated hydrocarbons in this system is too high (1wt%~4wt%), the chlorine content of the obtained resin is significantly increased, and the hue is also deteriorated to a certain extent
Patents CN1197808A and CN101319016B proposed that the use of AlCl3 / nucleophile composite catalyst system improved the compatibility of C5 resin to a certain extent, and solved the process of AlCl3 powder feeding However, since the nucleophile in the above-mentioned composite catalytic system is easy to complex with AlCl3, 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 difficulty

Method used

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  • Method for preparing light-color piperlene petroleum resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 500g of the mixture of C5 diolefins and C5 monoolefins obtained by the separation of petroleum cracking by-products, the ratio of dienes to monoenes is 0.68, add 0.5g chloro-tert-butane (0.1wt%) and 0.15g acetone (DN= 17.0, the molar ratio of acetone to tert-chlorobutane is 0.5), diluted with toluene to a certain concentration, as the reaction raw material.

[0025] First use nitrogen to replace the 2L reactor with stirring, then heat the reactor, when the temperature rises to 50~60°C, add a small amount of toluene and 5.0g of powdered aluminum trichloride, and start to use the metering pump to feed the reaction raw materials, the reaction The raw materials were added within 1 hour, then kept warm, and the reaction was continued for 2 hours.

[0026] After the heat preservation reaction is finished, the reaction is terminated, and after washing with water, the catalyst is removed until the pH of the aqueous solution is neutral. Remove the water phase through a separato...

Embodiment 2

[0034] Compared with Example 1, except that the addition amount of chloro-tert-butane in the reaction raw material is 1.5g (0.3wt%) and acetone (DN=17.0, the molar ratio of acetone to chloro-tert-butane is 0.4) is 0.38g Other than that, it was the same as in Example 1, and the obtained metapentyl petroleum resin had a softening point of 102° C., a Mz of 3200, a molecular weight distribution D of 1.45, and a hue of 2.6 (Gardner).

Embodiment 3

[0036]Compared with Example 1, except that the addition of ethyl acetate instead of acetone (DN=17.1, the molar ratio of ethyl acetate to tert-chlorobutane is 0.5) in the reaction raw material is 0.23g, the others are the same as in Example 1, The obtained metapentyl petroleum resin had a softening point of 105°C, a Mz of 3400, a molecular weight distribution D of 1.55, and a hue of 2.5 (Gardner).

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Abstract

The invention discloses a method for preparing light-color piperlene petroleum resin. The method comprises the following step: by taking C5 or C6 diolefin and monoolefine obtained from petroleum cracking byproduct separation as reaction monomers, lewis acid aluminum trichloride as a catalyst and tertiary carbon halogenated hydrocarbon as a coinitiator, synthesizing the piperlene petroleum resin in the presence of a carbocation stabilizer electron donor ED, wherein the addition amount of aluminum trichloride is 0.5-3wt%, the addition amount of tertiary carbon halogenated hydrocarbon is 0.05-0.5wt%, and the mole ratio of the addition amount of the electron donor to the tertiary carbon halogenated hydrocarbon is 0.05-1.0. The softening point of the piperlene petroleum resin prepared by using the method is 80-120 DEG C, the hue of the light-color piperlene petroleum resin is smaller than 3.5 (Gardner), the Mz of the light-color piperlene petroleum resin is smaller than 4000, the molecular weight distribution D of the light-color piperlene petroleum resin is smaller than 1.65, and the light-color piperlene petroleum resin is relatively good in compatibility with natural rubber and synthetic rubber SIS, SBS and the like, and has a relatively good tackifying function.

Description

technical field [0001] The present invention relates to a kind of preparation method of petroleum resin, especially the preparation method of piperylene petroleum resin. Background technique [0002] Piperylene petroleum resin is an important C5 petroleum resin, because its main chain is aliphatic hydrocarbon structure, it has low acid value, good miscibility, good adhesion, water resistance, ethanol resistance and chemical resistance. It is 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 metapentyl petroleum resins 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 halides to improve the initiation of polymerization. active. AlCl 3 Most common, du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F240/00C08F4/14C09J157/02
Inventor 徐科杰刘奕熊立群
Owner NINGBO JINHAI CHENGUANG CHEM
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