Process for synthesizing beta-pinene/maleic anhydride copolymer

A technology of maleic anhydride and a synthesis method, applied in the field of polymers, can solve the problems of complex post-processing process and high reaction cost, and achieve the effects of convenient post-processing, mild conditions and moderate time.

Inactive Publication Date: 2007-01-24
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, some existing methods need to add a third component active body to the raw material to initiate the reaction, resulting in high reaction cost and complicated post-treatment process

Method used

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  • Process for synthesizing beta-pinene/maleic anhydride copolymer
  • Process for synthesizing beta-pinene/maleic anhydride copolymer
  • Process for synthesizing beta-pinene/maleic anhydride copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Add 16.32 grams of β-pinene, 9.80 grams of maleic anhydride (the molar ratio of β-pinene and maleic anhydride is 1.2:1), and 50 ml of dioxygen into a four-necked flask equipped with a thermometer, a condenser, and mechanical stirring. Hexacyclic, add 0.242 grams of benzoyl peroxide when the temperature is raised to 80 ° C, and feed N 2 React under the conditions for 8 hours, then stop the reaction, after cooling to room temperature, pour out the upper layer liquid, add tetrahydrofuran to the lower layer of precipitate, after it is completely dissolved, add ether to re-precipitate the white precipitate, and then suction filter to obtain a white powder The solid was put into a vacuum oven at 50° C. and dried to a constant weight to obtain 10.11 grams of β-pinene / maleic anhydride copolymer.

Embodiment 2

[0023] Adding the mol ratio of β-pinene and maleic anhydride is 1: 1 (13.60 grams of β-pinene, 9.80 grams of maleic anhydride), the consumption of free radical initiator benzoyl peroxide is the amount of the substance of maleic anhydride 3%, other reaction conditions are with embodiment 1, finally obtain the β-pinene / maleic anhydride copolymer of 11.84 grams.

Embodiment 3

[0025] Adding the mol ratio of β-pinene and maleic anhydride is 1: 1.2 (13.6 grams of β-pinene, 11.76 grams of maleic anhydride), the consumption of radical initiator benzoyl peroxide is the amount of the substance of maleic anhydride 5%, other reaction conditions are with embodiment 1, finally obtain the β-pinene / maleic anhydride copolymer of 13.76 grams.

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Abstract

The present invention discloses process of synthesizing beta-pinene / maleic anhydride copolymer. Inside a solvent system, beta-pinene and maleic anhydride in the weight ratio of 0.5-5 to 1 are mixed and heated while adding free radical initiator to reaction for 6-18 to obtain beta-pinene / maleic anhydride copolymer. The synthesized beta-pinene / maleic anhydride copolymer has relatively great molecular weight, and the process has mild condition, moderate reaction temperature and time, convenient post treatment of the product and no need of one third component.

Description

technical field [0001] The invention relates to the field of polymers, in particular to a synthesis method of a β-pinene / maleic anhydride copolymer. Background technique [0002] my country is the main producer of turpentine, and the annual output of turpentine ranks first in the world in recent years. Turpentine is a natural renewable chemical raw material, the main components include α-pinene, β-pinene and other terpenoids. Wherein, β-pinene is a bicyclic monoterpene with an extracyclic double bond and an intracyclic four-membered ring structure, and the structure is as follows: [0003] [0004] The exocyclic double bond of β-pinene is easy to undergo enene reaction addition with electron-deficient dienophile compounds. Richar (J.Amer.Chem.SOC.Vol.79, pp.419~422, 1957) pointed out that the extracyclic double bond of β-pinene and maleic anhydride, methyl maleate, fumarate di Dienophile such as methyl ester undergoes a 1:1 ene reaction additio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F232/08C08F2/06C08F4/04C08F4/34C08F222/06
Inventor 沈敏敏邱振名哈成勇
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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