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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 hand, and on the other hand When used as a raw material in reprocessing processes such as hydrogenation, it is easy to cause a series of problems such as catalyst poisoning and equipment corrosion. The invention provides a terpene resin and its preparation method. The catalyst is easy to remove and does not contain heavy metals. The product Reach food grade

Method used

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  • Terpene resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Install a thermometer, a stirrer and a constant pressure dropping funnel on the three-necked flask respectively, and place the flask in a low-temperature constant temperature reaction bath; add 100 mL of toluene into the three-necked flask, and turn on the refrigerator until the temperature in the flask reaches -6°C; Quickly weigh 8.2 g of anhydrous AlCl 3 , and ground it into a slurry with 30 mL of toluene in a mortar, and transferred it into a reaction bottle, at this time, the temperature in the bottle was -5°C; 144.9 g of turpentine (which contained 75 %wt of Pinene 15 %wt) and 16.1 g of eucalyptus pinene (which contains α-pinene 96 %wt) were added to the constant pressure dropping funnel, the cock was opened, and the raw materials were added dropwise at a rate of about 100 d / min, the temperature in the bottle rises rapidly, reaching a maximum of 9°C; when the reaction temperature in the bottle begins to drop, add catalysts in the same way, including AlCl 3 5.0 ...

Embodiment 2

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

Embodiment 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 processes are 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%. The softening point of the product was 84°C, the chlorine content in the product was 82.0 mg / kg, and the residual toluene content was 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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