Light rice bran cerotic acid wax and preparation method thereof

A rice bran wax and light-colored technology, which is applied in the field of light-colored rice bran wax acid wax and its preparation, can solve the problems of affecting hardness and gloss, restricting the scope of use, stickiness of products, etc., so as to improve emulsification and gloss, improve The effect of using the range

Pending Publication Date: 2018-05-18
重庆合才化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the technical problem that the existing refined rice bran wax is sticky due to the existence of small molecular substances such as resins, which

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] The invention provides a method for preparing light-colored rice bran wax acid wax, comprising the following steps:

[0015] Deoiling: Put the deoiled and unbleached rice bran wax into a stainless steel reactor and soak it in ethyl acetate with a concentration of 99.7% for 4 hours, then open the valve under the stainless steel reactor to pump the ethyl acetate into the storage tank for distillation and recovery , the deoiled rice bran wax is heated to 90°C and melted, then cooled and sliced ​​for later use;

[0016] Oxidation: Put 600kg of sliced ​​rice bran wax and 2000ml of 50% dilute sulfuric acid into the enamel reaction kettle, heat to 90°C to melt the rice bran wax, then add 1900ml of 50% red alum sodium solution for oxidation, and keep the temperature at 90 ℃ and kept stirring for 6 hours, the color of rice bran wax changed from brown to light, cooled naturally, and allowed to stand for 1 hour to separate the wax and chromium slurry solution. Pump into another e...

Embodiment 2

[0019] The invention provides a method for preparing light-colored rice bran wax acid wax, comprising the following steps:

[0020] Deoiling: Put the deoiled and unbleached rice bran wax into a stainless steel reactor and soak it in ethyl acetate with a concentration of 99.7% for 4 hours, then open the valve under the stainless steel reactor to pump the ethyl acetate into the storage tank for distillation and recovery , the deoiled rice bran wax is heated to 95°C and melted, then cooled and sliced ​​for later use;

[0021] Oxidation: Put 650kg of sliced ​​rice bran wax and 2200ml of 50% dilute sulfuric acid into an enamelled reaction kettle, heat to 95°C to melt the rice bran wax, then add 2000ml of 50% red alum sodium solution for oxidation, and keep the temperature at 95 Stir continuously at ℃ for 6 hours, the color of rice bran wax changes from brown to light, cool naturally, let stand for 1.5 hours to separate the wax and chromium slurry solution, the chromium slurry in th...

Embodiment 3

[0024] The invention provides a method for preparing light-colored rice bran wax acid wax, comprising the following steps:

[0025] Deoiling: Put the deoiled and unbleached rice bran wax into a stainless steel reactor and soak it in ethyl acetate with a concentration of 99.7% for 4 hours, then open the valve under the stainless steel reactor to pump the ethyl acetate into the storage tank for distillation and recovery , the deoiled rice bran wax is heated to 100°C and melted, then cooled and sliced ​​for later use;

[0026] Oxidation: Put 550kg of sliced ​​rice bran wax and 1800ml of 50% dilute sulfuric acid into the enamel reaction kettle, heat to 100°C to melt the rice bran wax, then add 1800ml of 50% red alum sodium solution for oxidation, and keep the temperature at 100 Stir continuously at ℃ for 6 hours, the color of rice bran wax changes from brown to light, cool naturally, let stand for 2 hours to separate the wax and chromium slurry solution, the chromium slurry in the...

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PUM

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Abstract

The invention provides a preparation method of light rice bran cerotic acid wax. The method includes the following steps of deoiling, oxidation and acid pickling and water scrubbing. During deoiling,deoiled rice bran wax to be discolored is soaked in ethyl acetate, heated for melting and then cooled and sliced for use. During oxidation, the sliced rice bran wax and dilute sulphuric acid are heated to enable the rice bran wax to be melted, then the rice bran wax is added into a sodium bichromate solution and then constantly stirred, the color of the rice bran wax turns light from brown, and natural cooling and standing are conducted to make the wax delaminated from a chromium slurry solution. During acid pickling and water scrubbing, the oxidized rice bran wax is heated into a liquid thenput into dilute sulphuric acid and stirred, standing is carried out to make the wax delaminated from a water scrubbing liquid, then the mixture is added with water, stirred and heated at the same timetill the wax is totally melted, stirring continues to be conducted, standing is carried out to make the wax delaminated from the water scrubbing liquid, and the oxidized rice bran wax at the upper layer is sliced and packed after being cooled. The invention further provides the light rice bran cerotic acid wax. According to the method, the rice bran wax is oxidized by sodium bichromate to generate the rice bran cerotic acid wax which is light in color, odorless and hard in texture, micromolecular materials are effectively removed, the emulsibility and the luster are obviously improved, and deep processing is facilitated.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a light-colored rice bran wax and a preparation method thereof. Background technique [0002] Rice bran wax is a crystalline wax present in rice bran oil. It is a by-product wax paste obtained by dewaxing rice bran oil. The wax paste contains 30-50% rice bran oil. After deoiling by solvent method, crude oil containing less than 5% is obtained. Rice bran wax. The main components of coarse rice bran wax are long-chain fatty acid esters composed of higher fatty acid alcohols and higher fatty acids, and also contain other small molecular components such as various pigments and gums. Refined rice bran wax is generally deoiled by solvent method first, and then bleached with hydrogen peroxide to obtain light yellow refined rice bran wax. But the inventor of the present invention has found through research that the light-colored rice bran wax obtained by this method is difficult ...

Claims

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Application Information

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IPC IPC(8): C11B11/00
CPCC11B11/00Y02W30/74
Inventor 邱三明邱汀远
Owner 重庆合才化工科技有限公司
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