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Polymerized resin 2-glycidyl ester epoxy resin and method for producing the same

A technology of glyceride epoxy resin and polymerized rosin, applied in the field of epoxy resin, can solve the problems of poor oxidation resistance, direct application limitation, easy crystallization of rosin, etc. Good results

Inactive Publication Date: 2008-07-16
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] After the general-purpose epoxy resin uses a curing agent, because of its poor UV resistance, it cannot meet the requirements for the use of epoxy resin in recent years. In addition, there are still the following deficiencies in the source of its raw materials: mainly petroleum raw materials, which are supplied by petroleum The impact is very large, so it cannot meet the needs of modern industry
However, rosin itself has the disadvantages of easy crystallization, poor oxidation resistance and high acid value, which limits its direct application.

Method used

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  • Polymerized resin 2-glycidyl ester epoxy resin and method for producing the same
  • Polymerized resin 2-glycidyl ester epoxy resin and method for producing the same

Examples

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Effect test

Embodiment 1

[0018] Add 100 grams of polymerized rosin and 70 grams of epichlorohydrin into a four-necked flask equipped with a thermometer, a stirrer and a condenser, stir and heat up to 90 ° C, add 0.1 grams of sodium hydroxide, and the reaction time is 5 hours. Cool to 40°C, add 80 grams of toluene, add 10 grams of sodium hydroxide, control the temperature below 70°C, react for 2 hours, filter, wash the filtrate with water until there are no halogen ions, dry, and remove the toluene under reduced pressure to obtain the product polymerized rosin Diglycidyl ester epoxy resin. The polymerized rosin diglycidyl ester epoxy resin has the following characteristics: it is yellow transparent viscous liquid to solid at room temperature, and there is 1726cm in the infrared spectrogram. -1 、1243cm -1 、1144cm -1 、1103cm -1 、910cm -1 、850cm -1 and 760cm -1 Etc. characteristic absorption; epoxy value is 0.15-0.3 epoxy equivalent / 100g resin; softening point is 30-90°C.

Embodiment 2

[0020] Add 100 grams of polymerized rosin and 70 grams of epichlorohydrin into a four-necked flask equipped with a thermometer, a stirrer and a condenser, stir and heat up to 100° C., add 0.2 grams of tetramethylammonium chloride, and the reaction time is 4.5 hours. After the reaction, cool to 50°C, add 75 grams of benzene, add 15 grams of sodium hydroxide, control the temperature below 75°C, react for 2.5 hours, filter, wash the filtrate with water until there are no halogen ions, dry, and remove the solvent under reduced pressure to obtain The product is polymerized rosin diglycidyl ester epoxy resin.

Embodiment 3

[0022] Add 100 grams of polymerized rosin and 90 grams of epichlorohydrin into a four-necked flask equipped with a thermometer, a stirrer and a condenser, stir and heat up to 105° C., add 0.1 grams of tetramethylammonium chloride, and the reaction time is 5 hours. After the reaction, cool to 45°C, add 80 grams of toluene, add 20 grams of sodium hydroxide, control the temperature below 70°C, react for 3 hours, filter, wash the filtrate with water until there are no halogen ions, dry, and remove the toluene under reduced pressure to obtain The product is polymerized rosin diglycidyl ester epoxy resin.

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Abstract

The invention provides a polymerized colophony diglycidyl epoxy resin and a preparation method thereof. The epoxy resin comes from natural reproducible resource, molecules of the epoxy resin are provided with condensed ring rigid structure, and solidified products of the epoxy resin can be used for replacing present epoxy resin materials and the invention provided with excellent ultraviolet radiation resistance capacity. The preparation method is that the polymerized colophony and epichlorohydrin are stirred and heated and added with a catalyzer for reaction; after the reaction is finished, solvent and sodium hydroxide are added in sequence for reaction, then filtrated; the filtrate is washed until no halogen ion exists and then dried and decompressed to remove the solvent and obtain products. The invention further expands the using range of colophony and exploits a new source and variety of epoxy resin material. The polymerized colophony diglycidyl epoxy resin prepared by the invention has high epoxy value, comparatively fairer color and luster and better heat resistance. The molecule of the polymerized colophony diglycidyl epoxy resin also has a benzene ring structure; therefore, the solidified products thereof are provided with strong ultraviolet radiation resistance capacity, which is the characteristic of cycloaliphatic polymers.

Description

technical field [0001] The invention relates to an epoxy resin, in particular to a polymerized rosin diglycidyl ester epoxy resin and a preparation method thereof. Background technique [0002] After the general-purpose epoxy resin uses a curing agent, because of its poor UV resistance, it cannot meet the requirements for the use of epoxy resin in recent years. In addition, there are still the following deficiencies in the source of its raw materials: mainly petroleum raw materials, which are supplied by petroleum The impact is great, so it cannot meet the needs of modern industry. [0003] Our country is rich in rosin materials, which is a kind of natural renewable materials with low price. However, rosin itself has disadvantages such as easy crystallization, poor oxidation resistance and high acid value, which limit its direct application. Therefore, in order to give full play to the characteristics and advantages of rosin itself, it must be modified. Using its modified...

Claims

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Application Information

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IPC IPC(8): C08G59/02C09F1/04
Inventor 哈成勇黄活阳沈敏敏李因文
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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