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Method for preparing high-softening-point rosin glyceride from fumaric acid

A technology of rosin glyceride and high softening point, which is applied in the chemical modification of natural resins, etc., can solve the problem of low softening point of rosin glyceride, and achieve high softening point, good taste and good stability

Inactive Publication Date: 2010-09-01
WUZHOU PINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low softening point of rosin glyceride, the present invention develops fumaric acid, rosin, and glycerin as raw materials to synthesize rosin glycerol fumarate with a softening point of 100°C-150°C.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method utilizing fumaric acid to produce high softening point rosin glycerides, comprising the steps of: crushing rosin, adding fumaric acid by 5% of the rosin quality, 2 Under protection, mix and heat to 200°C, stir and react at a constant temperature for 0.5h to generate acid-modified rosin, then add a catalyst with a mass of 0.5‰ of rosin and glycerin with a mass of rosin of 13%, raise the temperature to 260°C, keep stirring and react at a constant temperature for 3h , stop N 2 Protection, after vacuum distillation for 20min, turn on N 2 protection, cooling down to below 200°C, and discharging.

[0014] The test results are: the acid value of the product is 7mgKOH / g, the softening point is 100°C, and the iron-cobalt method is lower than 8.

Embodiment 2

[0016] A method utilizing fumaric acid to produce high softening point rosin glycerides, comprising the steps of: crushing the rosin, adding fumaric acid by 18% of the rosin quality, 2 Under protection, mix and heat to 230°C, stir and react at a constant temperature for 3 hours to generate acid-modified rosin, then add a catalyst with a mass of rosin of 1‰ and glycerin with a mass of rosin of 22%, raise the temperature to 275°C, keep stirring and react at a constant temperature for 7 hours, stop N 2 protection, after vacuum distillation for 60 minutes, turn on N 2 protection, cooling down to below 210°C, and discharging.

[0017] The test results are: the acid value of the product is 5mgKOH / g, the softening point is 120°C, and the iron-cobalt method is lower than 8.

Embodiment 3

[0019] A method utilizing fumaric acid to produce high softening point rosin glycerides, comprising the steps of: crushing rosin, adding fumaric acid by 30% of the rosin quality, 2 Under protection, mix and heat to 250°C, stir and react at a constant temperature for 5 hours to generate acid-modified rosin, then add a catalyst with a mass of 3‰ of rosin and glycerin with a mass of rosin of 30%, raise the temperature to 290°C, keep stirring and react at a constant temperature for 10 hours, stop N 2 Protection, after vacuum distillation for 120min, turn on N 2 protection, cooling down to below 220°C, and discharging.

[0020] The test results are: the acid value of the product is 4mgKOH / g, the softening point is 150°C, and the iron-cobalt method is lower than 8.

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Abstract

The invention discloses a method for preparing high-softening-point rosin glyceride from a fumaric acid. The method comprises the following steps of: firstly, modifying rosin by using the fumaric acid; secondly, esterifying the modified rosion with glycerine; and finally, synthesizing a high-softening-point fumaric acid rosin glyceride product having a softening point of 100 to 150 DEG C. The modified rosin glyceride product prepared by the method has the characteristics of low cost, high softening point, high stability and good mouth-feel, is safe and reliable and can be applied in the industries of beverages, chewing gums and the like.

Description

technical field [0001] The invention relates to the technical field of rosin deep processing in the forest product chemical industry, and relates to a method for producing rosin glyceride with high softening point by using fumaric acid. Background technique [0002] At present, there are four main types of rosin glyceride products. One is ordinary rosin glyceride, which is esterified from gum rosin and glycerol. This type is the most commonly used, with a softening point of 80-95°C, low softening point, poor stability, and easy to be oxidized. The second type is hydrogenated rosin glyceride, which is formed by esterification of hydrogenated rosin and glycerin, with a softening point of 78-88°C. This type of rosin has been modified by hydrogenation and has good stability, but the cost of rosin hydrogenation is relatively high, and the softening point lower. The third type is polymerized rosin glyceride, which is formed by esterification of polymerized rosin and glycerin. Th...

Claims

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Application Information

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IPC IPC(8): C09F1/04
Inventor 郭超仁刘建军岑潮锋王尧陈洪
Owner WUZHOU PINE CHEM
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