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Method for preparing water-white highly-hydrogenated rosin

A highly advanced technology of hydrogenated rosin, applied in the direction of chemical modification of natural resins, can solve the problems of difficult recovery of active metals, complicated catalyst preparation process, etc., and achieve the effects of good color, long service life and good reproducibility.

Inactive Publication Date: 2011-10-12
盘锦和运新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst preparation process used in this method is complicated, and the recovery of active metals is difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]Put 10g of rosin, 30ml of solvent oil, and 0.5g of supported nano-Pd / C catalyst in a kettle-type high-pressure reactor with a volume of 75ml. After sealing it, replace it with nitrogen and hydrogen three times, then fill it with 2MPa hydrogen, and put it into the oil field. Heating and stirring slowly, when the temperature in the autoclave reaches 150°C, start the reaction, adjust the stirring speed appropriately, and adjust the hydrogen valve to keep the system pressure at 8MPa and keep the hydrogen pressure constant until the hydrogen is not absorbed and the stirring is stopped. The reaction time was 150 minutes. Cool the autoclave to room temperature, open the autoclave to take samples, filter the catalyst, and distill the filtrate under reduced pressure to obtain water-white hydrogenated rosin.

[0034] The various index analysis results of product hydrogenated rosin are as follows:

[0035] The color is not deeper than that of Luo Weibang, yellow 1.1, red 0.1; acid...

Embodiment 2

[0037] Put 10g of rosin, 30ml of solvent oil, and 0.5g of supported nano-Pd / C catalyst in a kettle-type high-pressure reactor with a volume of 75ml. After sealing it, replace it with nitrogen and hydrogen three times, then fill it with 2MPa hydrogen, and put it into the oil field. Heating at medium temperature, and stirring slowly, when the temperature in the autoclave reaches 130°C, start the reaction, adjust the appropriate stirring speed, and adjust the hydrogen valve to keep the system pressure at 8MPa and keep the hydrogen pressure constant until the hydrogen is not absorbed and the stirring is stopped. The reaction time was 200 minutes. Cool the autoclave to room temperature, open the autoclave to take samples, filter the catalyst, and distill the filtrate under reduced pressure to obtain water-white hydrogenated rosin.

[0038] The various index analysis results of product hydrogenated rosin are as follows:

[0039] The color is not deeper than that of Luo Weibang, yel...

Embodiment 3

[0041] Put 10g of rosin, 30ml of tetrahydrofuran, and 0.5g of supported nano-Pd / C catalyst in a kettle-type high-pressure reactor with a volume of 75ml, seal it and replace it with nitrogen and hydrogen three times, then fill it with 2MPa hydrogen, and put it into the oil field Heat up and stir slowly. When the temperature in the autoclave reaches 150°C, the reaction starts. Adjust the stirring speed appropriately, and adjust the hydrogen valve to keep the system pressure at 8MPa. The hydrogen pressure remains constant until the hydrogen is not absorbed. Stop stirring and react. The time is 180 minutes. Cool the autoclave to room temperature, open the autoclave to take samples, filter the catalyst, and distill the filtrate under reduced pressure to obtain water-white hydrogenated rosin.

[0042] The various index analysis results of product hydrogenated rosin are as follows:

[0043] The color is not deeper than that of Luo Weibang, yellow 1.1, red 0.1; acid value 168mg / g; so...

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Abstract

The invention relates to a method for preparing water-white highly-hydrogenated rosin. The method comprises the following step that rosin serving as a raw material is subjected to catalytic hydrogenation in the presence of a loading type nano palladium-based catalyst to obtain the water-white highly-hydrogenated rosin. In the method, the nano loading type palladium-based catalyst is utilized for the hydrogenation of the rosin, the reaction temperature is between 100 and 180 DEG C, the reaction pressure is 1.0 to 10.0MPa, and the reaction time is 2.0 to 5.0 hours; and the catalyst is removed by filtration, the solvents are removed by decompressed distillation, and the water-white highly-hydrogenated rosin is obtained. The method has the advantages of low reaction conditions, easy process operation, less consumption and long service life of catalyst, low production cost, good product quality, flexible operation, low equipment cost and the suitability for industrialized production.

Description

technical field [0001] The invention relates to a method for preparing water-white highly hydrogenated rosin. Background technique [0002] Rosin is a rich renewable natural resin, its main component is abietic acid type resin acid, which has excellent properties such as anti-corrosion, insulation and adhesion, and is widely used in chemical industry, papermaking, coating, ink and insulating materials and other fields. However, rosin is a monocarboxylic acid containing conjugated double bonds, which is chemically unstable and easy to be oxidized, which makes rosin darker, brittle and lower in performance. The method of catalytic hydrogenation can change the double bond structure of abietic acid type resin acid to make it tend to a stable structure, thereby eliminating the disadvantages of rosin caused by the existence of unsaturated bonds and improving various properties of rosin. Hydrogenated rosin is a product obtained by hydrogenation of rosin under the action of a catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09F1/04
Inventor 张克勇杜文强吕连海
Owner 盘锦和运新材料有限公司
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