Propylenyl pimaric acid diglycidic ester and its epoxy resin and their preparation

A technology of diglycidyl ester and propylene pimaric acid, applied in the directions of water-based dispersants, etc., achieves the effects of broad application prospects, simple preparation method and high epoxy value

Inactive Publication Date: 2003-06-25
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

However, the general-purpose bisphenol A epoxy resin can

Method used

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  • Propylenyl pimaric acid diglycidic ester and its epoxy resin and their preparation

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Preparation of Propylene Pimaric Acid Diglycidyl Ester:

[0027] In a 100ml reactor, add 3.74g (10mmol) of propylene pimaric acid, 1.87g (20mmol) of epichlorohydrin and 3.74g (27mmol) of potassium carbonate, and 0.0187g (0.07mmol) of 18-crown-6 ether, 80ml of acetone , heated to 55-60°C to reflux, and reacted for 60 hours. After cooling, the solvent was removed under reduced pressure with a rotary evaporator. Add 15ml of toluene to dissolve, wash with distilled water several times, vibrate, stand still, separate layers, and then use silver nitrate to check that there is no chloride ion in the water layer. Collect the toluene layer, dry it over anhydrous magnesium sulfate, remove the solvent with a rotary evaporator, and dry it in vacuum at 80°C for 3 to 4 hours to obtain a yellow viscous resin with an epoxy value of 0.38 and a chlorine content of 0.036% (molar content); After recrystallization from alkane and acetone, diglycidyl propylene pimarate was obtained as a wh...

Embodiment 2

[0029] Preparation of Propylene Pimaric Acid Diglycidyl Ester:

[0030] In the 100ml reactor, add 3.74g (10mmol) propylene pimaric acid, 2.24g (24mmol) epichlorohydrin and 4.11g (30mmol) potassium bicarbonate, and 0.075g (0.28mmol) tetrabutylammonium bromide, 70ml of acetone was heated to reflux at 55-60°C and reacted for 70 hours. After cooling, the solvent was removed under reduced pressure with a rotary evaporator. Add 20ml of toluene to dissolve, wash with distilled water several times, vibrate, stand still, and separate layers, then use silver nitrate to check that there is no chloride ion in the water layer. Collect the toluene layer, dry it over anhydrous magnesium sulfate, remove the solvent with a rotary evaporator, and dry it in vacuum at 80°C for 3 to 4 hours to obtain a yellow viscous resin with an epoxy value of 0.385 and a chlorine content of 0.042% (molar content); After recrystallization with acetone, propylene pimaric acid diglycidyl ester is obtained as a w...

Embodiment 3

[0032] Preparation of Propylene Pimaric Acid Diglycidyl Ester:

[0033] In a 100ml reactor, add 3.74g (10mmol) of acrylpimaric acid, 3.0g (32mmol) of epichlorohydrin and 4.49g (34mmol) of potassium carbonate, and 0.15g (0.56mmol) of 18-crown-6 ether, 60ml Butanone, heated to 75-80°C, reacted for 80 hours. After cooling, the solvent was removed under reduced pressure with a rotary evaporator. Add 20ml of toluene to dissolve, wash with distilled water several times, vibrate, stand still, and separate layers, then use silver nitrate to check that there is no chloride ion in the water layer. Collect the toluene layer, dry it over anhydrous magnesium sulfate, remove the solvent with a rotary evaporator, and dry it in vacuum at 80°C for 3 to 4 hours to obtain a yellow viscous resin with an epoxy value of 0.39 and a chlorine content of 0.03% (molar content); column chromatography After recrystallization with n-hexane and acetone, propylene pimarate diglycidyl ester was obtained as ...

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Abstract

The present invention relates to modified rosin and is propylenyl pimaric acid diglycidic ester and acrylic acid modified rosin epoxy resin containing propylenyl pimaric acid diglycidic ester in 40-100 wt%. The present invention also provides their preparation process. The propylenyl pimaric acid diglycidic ester and acrylic acid modified rosin epoxy resin are prepared with cheap natural material and are new environment friendly adhesive material with high epoxide number. The may be used also as the intermediate for preparing rosin surfactant, and has simple preparation process easy to use in industry.

Description

technical field [0001] The invention relates to the field of modified rosin, in particular to propylene pimarate diglycidyl ester, propylene pimarate diglycidyl ester type acrylic modified rosin epoxy resin and their preparation methods. technical background [0002] my country's rosin is rich in resources and low in price. It is the basic raw material of the chemical industry and is widely used in coatings, inks, synthetic rubber, papermaking, soap, metal processing and other industries. Epoxy resin (epoxy resin) has been widely used in coatings, electronic appliances, composite materials and adhesive industries because of its unique electrical properties, mechanical properties, corrosion resistance and chemical stability, and has become a fast-growing industry in recent years. A class of thermosetting resins. However, the general-purpose bisphenol A epoxy resin can no longer meet the needs of modern industrial development. The development of new e...

Claims

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Application Information

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IPC IPC(8): C09G1/04
Inventor 曹德榕魏晓惠
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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