Method for synthesizing tackifier monomer by utilizing terpinene serving as byproduct of terpinol

A technology of terpinene and tackifier, which is applied in the field of synthesizing tackifier monomers by using terpineol as a by-product of terpinene, which can solve problems such as difficult separation and unacceptable cost

Inactive Publication Date: 2012-10-03
广州弘五包装印刷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The by-product terpinene is a mixture of isomers with very similar properties. It is very difficult to separate them. It requires a rectification column with a high plate number or a very special separation method. So far, the cost is very difficult. accept
Therefore, the by-product terpinene can only be sold as a low-grade solvent for a long time

Method used

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  • Method for synthesizing tackifier monomer by utilizing terpinene serving as byproduct of terpinol
  • Method for synthesizing tackifier monomer by utilizing terpinene serving as byproduct of terpinol
  • Method for synthesizing tackifier monomer by utilizing terpinene serving as byproduct of terpinol

Examples

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Embodiment 1

[0016] Take 125 grams of maleic anhydride and add it to a four-necked flask equipped with a stirring device, a reflux condenser, a dropping funnel and a thermometer, and heat up to raise the temperature. After the maleic anhydride is melted, start stirring and add 7 grams of catalyst, and raise the temperature to about 130°C , add 300 grams of terpinene dropwise, finish adding within 1.5-2 hours, raise the temperature to 140°C-150°C, react for 2-4 hours, cool down to room temperature in a water bath, add toluene to dilute the reactant, remove the catalyst by filtration, and distill out under reduced pressure Organic solvent and unreacted terpinene, obtain intermediate product;

[0017] Take 200 grams of the intermediate product obtained from the above reaction and 0.56 grams of hydroquinone, and add them to a four-necked bottle equipped with a stirring device, a reflux condenser, a dropping funnel and a thermometer, slowly raise the temperature to about 160 ° C, start stirring,...

Embodiment 2

[0019] Take 100 grams of maleic anhydride and add it to a four-necked flask equipped with a stirring device, a reflux condenser, a dropping funnel and a thermometer, and heat up to raise the temperature. After the maleic anhydride is melted, start stirring and add 5 grams of catalyst, and raise the temperature to about 130°C , add 260 grams of terpinene dropwise, finish adding within 1.5-2 hours, raise the temperature to 140°C-150°C, react for 2-4 hours, cool down to room temperature in a water bath, add toluene to dilute the reactant, filter to remove the catalyst, and distill it under reduced pressure Organic solvent and unreacted terpinene, obtain intermediate product;

[0020] Take 180 grams of the intermediate product and 0.6 gram of hydroquinone obtained from the above reaction, and add them to a four-necked bottle equipped with a stirring device, a reflux condenser, a dropping funnel and a thermometer, slowly raise the temperature to about 160°C, start stirring, and star...

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Abstract

The invention discloses a method for synthesizing a tackifier monomer by utilizing terpinene serving as a byproduct of terpinol. According to the method, a tackifier is synthesized by performing addition reaction and esterification reaction of the terpinene serving as the byproduct of the terpinol produced by turpentine, so that the tackifier can be applied to acrylic acid water-based paint or adhesives, is used as a tackifier monomer or a tackifier monomer for hot melt adhesives, and has high application value.

Description

technical field [0001] The invention relates to the technical field of organic chemical tackifier synthesis, in particular to a method for synthesizing tackifier monomers by using terpineol by-product terpinene. Background technique [0002] The synthesis of camphor and terpineol with turpentine as raw materials will produce a large amount of by-products before the low boiling point. The former is often called industrial dipentene, and the latter is called terpinene. In fact, they are all α-pinene, α - Mixtures of double bond isomers such as terpinene, dipentene, terpinene, iso-terpinene, etc. Their production accounts for about 20%-30% of the production of camphor and terpineol. my country is very rich in turpentine resources, and it is a large producer of gum rosin and turpentine in the world. But domestic turpentine is also limited to a few varieties such as synthetic camphor, terpineol, terpene resin, borneol, etc., and a large amount of by-products will be produced eve...

Claims

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Application Information

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IPC IPC(8): C07C69/753C07C67/08C09D4/02C09J4/02
Inventor 刘方旭
Owner 广州弘五包装印刷有限公司
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