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Preparation of rice bran wax calcium soap

A technology of calcium soap and bran wax, applied in the field of preparation of bran wax calcium soap, can solve the problems of inability to reach the degree of hydrolysis, difficult industrial application and the like

Inactive Publication Date: 2009-07-08
上海中远化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, the laboratory method of bran wax hydrolysis mainly adopts the method of polar and non-polar solvent coexistence and alkali saponification. Although the hydrolysis rate is significantly improved by this method, it still cannot reach the required degree of hydrolysis, and because it involves organic solvents and other factors, it is difficult for industrial application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 50g of refined rice bran wax and put it into beaker 1 and heat it to melt it; in addition, weigh 8g of NaOH solid and 2g of PEG into beaker 2 and add 250g of deionized water, and stir to mix the two with water completely. Pour the solution in beaker 2 into a four-necked flask, and when it is preheated to about 70°C, pour the melted bran wax in beaker 1 into the four-necked flask, stir to mix the two fully, and then raise the temperature to The reaction was carried out at 100° C. for 2.5 hours, and the reaction pressure was normal pressure. After the first step reaction finishes, take by weighing 20g40% by weight CaCl 2 The aqueous solution was added into a four-necked flask, and the reaction was continued for 2.5 hours, and the reaction pressure was normal pressure. After the reaction was completed, the heating was stopped, and deionized water was added to the four-neck flask for water washing. After fully washing, remove part of the water by suction filtration,...

Embodiment 2

[0032] Weigh 50g of refined rice bran wax and put it into beaker 1 and heat it to melt; in addition, weigh 7g of NaOH solid and 3g of PEG into beaker 2 and add 200g of deionized water, and stir to completely mix the two with water. Pour the solution in beaker 2 into a four-necked flask, and when it is preheated to about 70°C, pour the melted bran wax in beaker 1 into the four-necked flask, stir to mix the two fully, and then raise the temperature to The reaction was carried out at 100° C. for 2.5 hours, and the reaction pressure was normal pressure. After the first step reaction finishes, take by weighing 15g40% by weight CaCl 2 The aqueous solution was added into a four-necked flask, and the reaction was continued for 1.5 hours, and the reaction pressure was normal pressure. After the reaction was completed, the heating was stopped, and deionized water was added to the four-neck flask for water washing. After fully washing, remove part of the water by suction filtration, an...

Embodiment 3

[0034] Weigh 50g of refined rice bran wax into beaker 1 and heat it to melt; in addition, weigh 8g of NaOH solid and 2g of PEG into beaker 2, add 250g of deionized water, and stir to mix the two with water completely. Pour the solution in beaker 2 into a four-necked flask, and when it is preheated to about 70°C, pour the melted bran wax in beaker 1 into the four-necked flask, stir to mix the two fully, and then raise the temperature to Reaction was carried out at 90° C. for 1.5 hours, and the reaction pressure was normal pressure. After the first step reaction finishes, take by weighing 17.5g40% by weight CaCl 2The aqueous solution was added into a four-necked flask, and the reaction was continued for 2 hours, and the reaction pressure was normal pressure. After the reaction was completed, the heating was stopped, and deionized water was added to the four-neck flask for water washing. After fully washing, remove part of the water by suction filtration, and then evaporate all...

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Abstract

The invention provides a method for preparing bran wax calcium soap, which comprises the following steps: firstly, adding 50 weight portions of rice bran wax into a container 1 for melting, adding 1 to 15 weight portions of NaOH and 0.01 to 5 weight portions of polyethylene glycol into a container 2, adding 50 to 500 weight portions of deionized water, pouring a solution in the container 2 into a four-hole boiling flask, heating the solution to be between 70 and 75 DEG C, pouring the rice bran wax in the container 1 into the four-hole boiling flask, making the rice bran wax react with the solution for 0.5 to 5 hours while stirring at a temperature of between 50 and 100 DEG C and at normal pressure, and generating rice bran sodium soap; and secondly, adding 5 to 50 weight portions of 40 weight percent CaCl2 aqueous solution into the four-hole boiling flask, making the rice bran sodium soap react with the CaCl2 aqueous solution for 0.5 to 5 hours at a temperature of between 50 and 500 DEG C and at normal pressure, generating dark brown rice bran wax calcium soap particles, and obtaining the granular bran wax calcium soap product after water washing, suction filtration and drying. The method uses the polyethylene glycol as a phase-transfer catalyst to prepare the bran wax calcium soap, and has the characteristics of low reaction temperature, short reaction time, high saponification and hydrolysis efficiency of rice bran, etc.

Description

technical field [0001] The invention relates to a preparation method of bran wax calcium soap, in particular to a method for preparing bran wax calcium soap by using polyethylene glycol (PEG) as a phase transfer catalyst. Background technique [0002] my country is a big rice producing country in the world, and its rice output and processing volume account for more than one-third of the world's total, ranking first in the world. In rice processing, about 5%-8% rice bran is generally produced, rice bran oil contains about 16.3%, and rice bran oil contains 3%-4% wax, so my country has abundant bran wax resources. Bran wax is mainly composed of higher fatty alcohol esters. Compared with glycerides, wax esters have a low hydrolysis rate and slow saponification. As a deep-processing product of rice bran wax, bran wax calcium soap has the characteristics of high dropping point and good oil absorption and oil retention, and is suitable for leather shoe polish, floor wax, carbon pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B11/00
Inventor 沈春明
Owner 上海中远化工有限公司
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