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Preparation method of special modified starch for toilet powder

A technology of modified starch and talcum powder, which is applied in the field of daily chemical industry, can solve the problems of modified starch that has not been found in talcum powder, etc., and achieve the effects of low production cost, simple and practical method, and simple equipment

Inactive Publication Date: 2014-01-22
GUANGXI HESHENG BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using starch instead of talcum powder for the preparation of talcum powder is a direction for people to explore the preparation of talcum powder. The original properties of starch are changed by chemical methods to make it more suitable for the preparation of talcum powder. This is modified starch. Different requirements, there are many modification methods, and different modification methods make starch have different properties and uses. After searching, no technical disclosure of modified starch that is more suitable for preparing talcum powder has been found.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] (1) get following raw material: 100 kilograms of corn starch, 8 kilograms of anhydrous sodium sulfate, 1 kilogram of 10% sodium hydroxide solution, 0.5 kilogram of composite catalyst, 250 kilograms of water;

[0016] (2) Add 250 kilograms of water in the reaction tank, then add 8 kilograms of anhydrous sodium sulfate, dissolve in water, then add 100 kilograms of cornstarch, stir to make starch milk;

[0017] (3) Slowly add sodium hydroxide solution to the starch milk, control the pH value to 10, and react for 40 minutes to obtain alkaline starch milk for later use;

[0018] (4) Add 0.5 kg of composite catalyst to the above alkaline starch milk, react for 30 minutes, then heat up to 50°C, react for 1 hour, centrifugally filter, wash the filter cake with water 3 times, centrifugally filter, and filter cake at 80°C Dried to a water content of 6-10%, crushed through a 100-200 mesh sieve to obtain 98 kg of modified starch;

[0019] The composite catalyst is prepared by unif...

Embodiment 2

[0021] (1) get following raw material: 50 kilograms of potato starches, 6 kilograms of sodium chloride, 1 kilogram of 10% sodium hydroxide solution, 0.3 kilograms of composite catalysts, 200 kilograms of water;

[0022] (2) Add 200 kilograms of water in the reaction tank, then add 6 kilograms of sodium chloride, dissolve in water, then add 50 kilograms of cornstarch, stir to make starch milk;

[0023] (3) Slowly add sodium hydroxide solution to the starch milk, control the pH value to 11, and react for 30 minutes to obtain alkaline starch milk for later use;

[0024] (4) Add 0.3 kg of composite catalyst to the above-mentioned alkaline starch milk, react for 20 minutes, then heat up to 55°C, react for 2 hours, centrifugally filter, wash the filter cake with water 3 times, centrifugally filter, and filter cake at 80°C Dried to a moisture content of 6-10%, crushed through a 100-200 mesh sieve to obtain 49 kg of modified starch;

[0025] The composite catalyst is prepared by unif...

Embodiment 3

[0027] (1) get following raw material: 200 kilograms of cornstarch anhydrous sodium sulfate 20 kilograms of 10% sodium hydroxide solution 4 kilograms of composite catalysts 1 kilogram of water 600 kilograms;

[0028] (2) Add 600 kilograms of water in the reaction tank, then add 20 kilograms of anhydrous sodium sulfate, dissolve in water, then add 200 kilograms of tapioca starch, stir to make starch milk;

[0029] (3) Slowly add sodium hydroxide solution to the starch milk, control the pH value to 10, and react for 40 minutes to obtain alkaline starch milk for later use;

[0030] (4) Add 1 kg of composite catalyst to the above-mentioned alkaline starch milk, react for 20 minutes, then heat up to 60°C, react for 1.5 hours, centrifugally filter, wash the filter cake with water 3 times, centrifugally filter, and filter cake at 80°C Dried to a water content of 6-10%, crushed through a 100-200 mesh sieve to obtain 196 kg of modified starch;

[0031] The composite catalyst is prepar...

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PUM

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Abstract

The invention discloses a preparation method of special modified starch for toilet powder. Traditionally, a main matrix for preparing toilet powder is talcum powder, and the talcum powder is a mineral substance, and structurally contains asbestos-like fibers which can induce various diseases and even cancers. According to the invention, starch is subjected to alkalization treatment and catalytic oxidation treatment so as to modify the structure of the starch and remove the viscosity of the starch, in such a way, the nature of the starch is changed, the water absorption of the starch is increased, and modified starch granules are not swelled and gelatinized and has no viscosity. The method disclosed by the invention is simple and practical, simple in required equipment and low in production cost, the prepared modified starch is especially suitable for the preparation of the toilet powder, and after the modified starch is applied to a human body, the skin is kept in a dry and smooth state.

Description

technical field [0001] The invention relates to a method for preparing modified starch special for talcum powder, which belongs to the technical field of daily chemical industry. Background technique [0002] The human skin must perspire to maintain the normal metabolism of the human body. If the perspiration is not removed in time, the skin will become sticky and uncomfortable, which will easily cause various skin diseases, such as sweat rash, dermatitis, and ringworm. The main users of talcum powder are infants and young children, because infants and young children have delicate skin and high water content, so they are more susceptible. In order to prevent such skin diseases, people will use talcum powder on the skin to dry the skin surface and reduce the appearance of skin. probability of disease occurrence. Traditionally, the main base for preparing talcum powder is talcum powder, which is based on the water absorption and fluidity of the talcum powder itself. Talc is ...

Claims

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Application Information

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IPC IPC(8): C08B31/16A61K8/73A61Q15/00
Inventor 刘向斌
Owner GUANGXI HESHENG BIO TECH
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