Terpene resin and preparation method thereof

A technology of terpene resin and terpenes, applied in the field of preparation of terpene resin, can solve the problems of equipment corrosion, catalyst poisoning, high chlorine content, and achieve the effects of improving product yield, reducing material loss and reducing residual amount

Inactive Publication Date: 2012-08-15
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the difficult removal of catalysts in terpene resin products under the existing process conditions, resulting in high chlorine content and excessive heavy metal content in the products, thus causing the obtained products to fail to meet the application requirements of some high-end fields on the one ha

Method used

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  • Terpene resin and preparation method thereof

Examples

Experimental program
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Effect test

Example Embodiment

[0040] Example 1

[0041] Install the thermometer, stirrer and constant pressure dropping funnel on the three-necked flask respectively, and place the flask in the low-temperature thermostatic reaction bath; add 100 mL of toluene into the three-necked flask, open and cool until the temperature in the bottle reaches -6℃; Quickly weigh out 8.2 g of anhydrous AlCl 3 , And grind into a slurry together with 30 mL of toluene in a mortar, and transfer them into the reaction flask together. At this time, the temperature in the flask is -5°C; 144.9 g turpentine oil (containing 75% wt of α-pinene, β- A mixture of pinene 15%wt) and 16.1 g of cineole pinene (containing 96%wt of α-pinene) was added to the constant pressure dropping funnel, the stopcock was opened, and the raw materials were started to be dropped. The dropping speed was controlled to about 100 d / min, the temperature in the bottle rises rapidly, reaching a maximum of 9°C; when the reaction temperature in the bottle starts to...

Example Embodiment

[0042] Example 2

[0043] The raw material is 160.5 g of turpentine (containing 75% of α-pinene and 15% of β-pinene), the initial reaction temperature is 5°C, the amount of co-catalyst is 5.2 g, and the remaining processes are the same as in Example 1. In the end, 140 g of the mixture of toluene and turpentine was recovered, and 86 g of terpene resin product was obtained. The yield was 59.7%, the softening point was 91°C, the chlorine content in the product was 53.8 mg / kg, and the residual toluene content was 17.5 mg / kg.

Example Embodiment

[0044] Example 3

[0045] The raw material is a mixture of 80 g turpentine oil and 82.5 g eucalyptus pinene, the initial reaction temperature is 0°C, and the rest of the process is the same as in Example 1. Finally, 131.2 g of toluene and unreacted turpentine were recovered, and 86.5 g of terpene resin product was obtained, with a yield of 53.2%, a product softening point of 84°C, a chlorine content of 82.0 mg / kg in the product, and a residual toluene content of 19.9 mg / kg.

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Abstract

The invention discloses a terpene resin and a preparation method thereof. The preparation method comprises steps as follows: terpene substances are used as a raw material, AlCl3 in the presence of an aromatic solvent is used as a main catalyst, and a cocatalyst is used in the reaction; polymerization is carried out at low temperature to prepare the crude terpene resin product; and the crude terpene resin product is washed and distilled under reduced pressure to obtain the terpene resin product. The cocatalyst is trimethylchlorosilane, triethylchlorosilane, tripropylchlorosilane or tributylchlorosilane, and accounts for 1-5% of the total mass of the terpene substance raw material; the main catalyst AlCl3 accounts for 4-12% of the total mass of the terpene substance raw material; the elemental chlorine content in the prepared terpene resin product is less than 100mg/kg, and the metallic aluminum content is less than 10mg/kg; the terpene resin product does not contain metallic antimony; and the residue level of the volatile solvent is less than 25mg/kg. The product reaches to the food level.

Description

technical field [0001] The invention relates to a terpene resin, in particular to a preparation method of the terpene resin which can meet the technical requirements of food sanitation grade resin and deep processing and utilization. Background technique [0002] Terpene resin is a general term for polymers obtained by cation-catalyzed polymerization of terpene compounds as raw materials. Common terpene resins, α-pinene resins, β-pinene resins, dipentene resins, etc., of course, also include modified terpene resins, such as terpene styrene resins, terpene phenolic resins, and C5 modified terpene resins. Vinyl resin, etc. [0003] Terpene resin has excellent physical properties such as non-toxic, hydrophobic, non-crystallization, electrical insulation, strong adhesion, etc. and chemical properties such as acid and alkali resistance, anti-aging, etc. It is easily soluble in aromatic hydrocarbons and vegetable oils, and is an excellent tackifier. It is widely used in rubber, ...

Claims

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Application Information

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IPC IPC(8): C08F32/00C08F32/08C08F32/06C08F4/58A23L1/058A23L29/288
Inventor 赵振东王婧李冬梅于慰民陈玉湘毕良武卢言菊古研
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
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