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Water-white hydrogenating rosin production

A technology of hydrogenated rosin and manufacturing method, which is applied in the direction of natural resin refining, etc., which can solve the problems of high temperature required for the production of water-white hydrogenated rosin, and achieve the effects of reduced economic costs, simple operation of the production process, and reduced requirements for equipment

Inactive Publication Date: 2005-05-11
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve this problem, the inventor has found a method of rinsing rosin or recrystallizing and purifying rosin to produce water-white hydrogenated rosin through many experiments and explorations, which solves the need for high-temperature, high-pressure, and high-vacuum processes in the production of water-white hydrogenated rosin condition problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]The purchased fresh turpentine is crushed and sent to the turpentine tank, and then rinsed and maintained by adding sterilized and low-dissolved oxygen water. The water quality should be 20-30cm higher than the resin surface, and the rinsing water should be replaced every 5-30 days for three consecutive times. Finally, the rosin that has been rinsed is sent to the dissolving tank and added with turpentine to adjust to a concentration of 50-60% by weight of rosin. After heating, dissolving, filtering and clarifying processes, the purified rosin liquid is obtained, and then added to the high pressure tank after metering. In the autoclave, add a skeleton nickel catalyst according to 1-8% of the weight of the feed, after vacuuming and replacing the air in the autoclave with hydrogen, adjust the hydrogen pressure in the autoclave to 8.0-12.0MPa, and start the autoclave stirrer and heating system , raise the temperature to 170-200 ° C, and continuously feed hydrogen, maintain t...

Embodiment 2

[0028] The purchased fresh turpentine is crushed and sent to the turpentine tank, and then rinsed and maintained by adding sterilized and low-dissolved oxygen water. The water quality should be 20-30cm higher than the resin surface, and the rinsing water should be replaced every 5-30 days for three consecutive times. Finally, the rosin that has been rinsed is sent to the dissolving tank and added with turpentine to adjust to a concentration of 50-60% by weight of rosin. After heating, dissolving, filtering and clarifying processes, the purified rosin liquid is obtained, and then added to the high pressure tank after metering. In the autoclave, add a skeleton nickel catalyst according to 7-15% of the weight of the feed, after vacuuming and replacing the air in the autoclave with hydrogen, adjust the hydrogen pressure in the autoclave to 12.0-15.0MPa, and start the autoclave stirrer and heating system , raise the temperature to 140-200°C, and continuously feed hydrogen, maintain ...

Embodiment 3

[0030] Send the rinsed rosin to the dissolving tank and add turpentine to adjust to a concentration of 20-50% by weight of rosin. The hydrogen pressure of the hydrogenation reaction is 4.0-12.0MPa, the reaction temperature is 140-180°C, and the reaction time is 0.5-50%. 3.0 hour, all the other are with embodiment one.

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PUM

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Abstract

Transparent hydroabietyl is produced by: first rinsing turpentine with sterilized water containing low oxygen to remove the colloid chorophyl, suger and protein; then dissolving turpentine to hydrotrect in the accelerating agent of nicke or Pd / C, at 140-200deg.C and 4.0-15.0MPa, reactingfor 0.5-3.0h, finally, filtrating and vacuum distilling to get the product.

Description

technical field [0001] The invention relates to a method for advanced processing of rosin, in particular to a method for manufacturing water-white hydrogenated rosin. technical background [0002] Rosin is a renewable natural resin whose main component is abietic acid type resin acid. Because the abietic acid type resin acid is a monocarboxylic acid containing conjugated double bonds, its chemical properties are unstable, and it is easy to interact with oxygen in the atmosphere. The oxygen absorption can reach 10% of the weight of the rosin, thereby deepening the color of the rosin and reducing its quality. The method of catalytic hydrogenation can change the double bond structure of the abietic acid type resin acid, making it tend to the stable structure of the alicyclic ring, thereby eliminating the disadvantages of rosin caused by the existence of conjugated double bonds. Hydrogenated rosin has the advantages of good oxidation resistance, low brittleness, high thermal st...

Claims

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Application Information

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IPC IPC(8): C09F1/02
Inventor 陈小鹏王琳琳祝远姣韦小杰
Owner GUANGXI UNIV
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