A kind of method for reducing the color number of piperylene petroleum resin

A technology of petroleum resin and piperylene, applied in the field of preparation of piperylene petroleum resin, can solve the problems of difficult control of polymerization reaction, deepening of petroleum resin color number, increase of catalyst dosage, etc., and achieve easy control, stable product quality, avoid the effect of air

Active Publication Date: 2016-02-10
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water in raw materials and solvents consumes more catalyst, which increases the amount of catalyst used and reduces the catalytic activity
The polymerization reaction is difficult to control, the product quality is unstable, and it is easy to produce "scum", which reduces the yield of the resin. Color development (as can be seen from the ultraviolet spectrum), deepens the color number of petroleum resin, and degrades the quality

Method used

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  • A kind of method for reducing the color number of piperylene petroleum resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 30 grams of silicon tetrachloride-dried solvent toluene (containing 0.3 grams of silicon tetrachloride), 0.5 grams of aluminum trichloride catalyst, and dropwise add 100 grams of piperylene concentrate dried with silicon tetrachloride (Contains 1.0 g of silicon tetrachloride). The dropping speed is controlled, the dropping temperature is 3, and a softening point of 80°C. The treatment of the three wastes of alkali water in the lower layer, the primary, secondary and tertiary water is applied.

Embodiment 2

[0025] Add 30 grams of silicon tetrachloride dry solvent toluene (containing 0.6 grams of silicon tetrachloride), 1.0 grams of aluminum trichloride catalyst, and dropwise add 100 grams of piperylene concentrate (containing 1.0 grams of silicon tetrachloride) into the reaction kettle. gram). The dropping speed is controlled, the dropping temperature is <20°C, the reaction temperature is 50°C, and the reaction time is 8h. Carry out one time of excessive alkali washing, three times of water washing, layering, excessive alkali washing, and layering; the upper layer is vacuumed to remove the toluene solvent, and the piperylene petroleum resin is obtained. The resin yield reaches 86%, and the hue (Fe-Co) <4 , The softening point is 92°C. The treatment of the three wastes of alkali water in the lower layer, the primary, secondary and tertiary water is applied.

Embodiment 3

[0027] Add 30 grams of silicon tetrachloride dry solvent toluene (containing 1.5 grams of silicon tetrachloride), 1.5 grams of aluminum trichloride catalyst, and dropwise add 100 grams of piperylene concentrate (containing 1.0 grams of silicon tetrachloride) into the reaction kettle. gram). Control the rate of addition, and the temperature of addition is <20°C. The reaction temperature is 50°C, and the reaction time is 8h. Excessive alkali washing once, washing with water three times, and layering; the upper layer is vacuumed to remove the toluene solvent, and the piperylene petroleum resin is obtained. The resin yield reaches 89%, the hue (Fe-Co) is ≤4, and the softening point is 97°C . Treatment of the three wastes of alkaline water in the lower layer, and the primary, secondary, and tertiary waters are applied

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Abstract

The invention relates to a method for reducing pentadiene petroleum resin color number. The method is characterized in that C5 olefin fraction obtained by a C5 separation device is used as a raw material, the weight of pentadiene concentrate is 60-75 percent; silicon tetrachloride is used as a drying agent, solvents and aluminum chloride anhydrous serving as a catalyst are added to control the dropwise adding speed, and the dropwise adding temperature is less than 30 DEG C, the reaction temperature is 0-80 DEG C and the reaction time is 0.5-10h, so that pentadiene petroleum is prepared. According to the method, the using amount of the synthetic pentadiene petroleum resin catalyst and the resin color number are successfully reduced, and the problem that the color needs to be deepened when high-grade pentadiene petroleum resin is produced is solved, so that the quality of the pentadiene petroleum resin is stable, the process is controlled, and multi-grade requirement of clients is met, and the economic benefit is improved.

Description

technical field [0001] The present invention relates to C 5 After cyclopentadiene and isoprene are removed from the distillate, the obtained piperylene concentrate containing 60-75% is used as raw material, silicon tetrachloride is used as desiccant, solvent and catalyst are added, and hydrogen chloride is generated to replace nitrogen at the same time Protection, the method for preparing piperylene petroleum resin. Background technique [0002] In the process of petroleum cracking to ethylene, by-product C 5 Fractions account for 15% to 20%, C 5 The distillate contains diolefins such as isoprene, cyclopentadiene and piperylene. These diolefins have active chemical properties and their main purpose is to manufacture C 5 Aliphatic petroleum resins, which usually have the characteristics of light color, low density and high saturation, are widely used in adhesives, hot-melt road marking paints, coatings, inks, rubber additives and other industries. [0003] Piperylene petr...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08F240/00
Inventor李正姜丹蕾周遵石付学红周亚婷王芳
OwnerPETROCHINA CO LTD