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Polycondensate resin of pyrogallol and divinylbenzene and synthesis method thereof

A technology of divinylbenzene polycondensation resin and divinylbenzene is applied in the field of design and synthesis of new resins, which can solve the problems of high brittleness, insufficient heat resistance, poor toughness, etc. High point, high transparency effect

Inactive Publication Date: 2012-06-06
BEIJING NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional resins have defects such as insufficient heat resistance, high brittleness and poor toughness.

Method used

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  • Polycondensate resin of pyrogallol and divinylbenzene and synthesis method thereof
  • Polycondensate resin of pyrogallol and divinylbenzene and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 15.0g of pyrogallol, 100mL of toluene, and 0.2g of oxalic acid into a four-neck flask equipped with a stirrer, condenser, constant pressure dropping funnel and thermometer under nitrogen protection. After the raw materials are completely dissolved, add 15.0mL of 1 dropwise. 3-divinylbenzene, after reflux reaction at 70°C for 5 hours, heat up to distill water, solvent and unreacted raw materials until the resin becomes liquid, pour out the reaction bottle, and obtain the polycondensation resin of pyrogallol and divinylbenzene.

Embodiment 2

[0019] Under nitrogen protection, 16.0 g of pyrogallol was added to a four-neck flask equipped with a stirrer, a condenser, a constant pressure dropping funnel and a thermometer, 200 mL of 1,2-dichloroethane, 0.4 g of p-toluenesulfonic acid, After the raw materials are completely dissolved, add 20.0mL of 1,4-divinylbenzene dropwise, and react under reflux at 75°C for 10 hours, then heat up to distill water, solvent and unreacted raw materials until the resin becomes liquid, then pour out the reaction bottle to obtain pyrogallol Polycondensation resin with divinylbenzene.

Embodiment 3

[0021] Add 18.0g of pyrogallol, 150mL of xylene and 0.6g of hydrochloric acid in a four-necked flask equipped with a stirrer, condenser, constant pressure dropping funnel and thermometer under nitrogen protection, and dropwise add 25.0mL of 1 , 4-divinylbenzene, after reflux reaction at 80°C for 8 hours, heat up to distill water, solvent and unreacted raw materials until the resin becomes liquid, pour out the reaction bottle, and obtain the polycondensation resin of pyrogallol and divinylbenzene.

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Abstract

The invention discloses a polycondensate resin of pyrogallol and divinylbenzene and a synthesis method thereof, which belong to the technical field of preparing functional polymers. The polycondensate resin of the pyrogallol and the divinylbenzene synthesized by the method has the following structural general formula, wherein n is between 2 and 15. In the synthesis method, the pyrogallol, the divinylbenzene and a catalyst perform refluxing reactions to obtain the polycondensate resin of the pyrogallol and the divinylbenzene. The polycondensate resin of the pyrogallol and the divinylbenzene has the advantages of high purity, low free phenol and volatile matter, high softening point and high transparency, and can be used in the industries of printing, electronics, coating, printing ink and the like.

Description

technical field [0001] The invention relates to the design and synthesis of a novel resin, in particular to the design and synthesis of a polycondensation resin of pyrogallol and divinylbenzene. Background technique [0002] Resin is the first polymer compound to realize industrialization in the world, and it has a history of nearly a hundred years so far. Because of its easy-to-obtain raw materials, low price, good molding processability, excellent mechanical properties, flame retardancy and heat resistance, etc. Therefore, it has become an indispensable raw material for contemporary industry, especially in printing, electronics, paint and ink industries. However, traditional resins have defects such as insufficient heat resistance, high brittleness and poor toughness. Contents of the invention [0003] In view of the above-mentioned state of the art, the inventors of the present invention have carried out in-depth and meticulous research on common phenolic resins and p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/02
Inventor 邹应全周海华沙栩正
Owner BEIJING NORMAL UNIVERSITY