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Carboxymethyl starch ether and production method thereof

A technology for carboxymethyl starch ether and starch, applied in the field of carboxymethyl starch ether and production, can solve problems such as unsatisfactory product quality indicators, and achieve the effects of easy operation, simple production method and excellent quality

Inactive Publication Date: 2008-07-30
王进平
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AI Technical Summary

Problems solved by technology

[0002] Existing sodium carboxymethyl starch product, due to the restriction of raw material and process, product quality index is not ideal

Method used

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Experimental program
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Embodiment Construction

[0027] A kind of production method of carboxymethyl starch ether, comprises the following steps successively:

[0028] (1) Cross-linking: 50-200 parts by weight (example 50, 120, 200 parts) of alcohol, 100 parts by weight of starch, 1-10 parts by weight (example 1, 5, 10 parts) of sodium hydroxide, 0.02 ~0.5 parts by weight (example 0.02, 0.1, 0.5 parts) of crosslinking agent, 0.01~0.3 parts by weight (example 0.01, 0.1, 0.3 parts) of catalysts are put into the reactor, vacuumize, 25~35 ℃ (example 25 ℃, 30°C, 35°C) under normal pressure and heat preservation;

[0029] (2) Alkalization: 50-150 parts by weight (example 50, 100, 150 parts) of alcohol, 1-45 parts by weight (example 1, 20, 45 parts) of sodium hydroxide, 0.1-1.5 parts by weight (example 0.1 , 1, 1.5 parts) of industrial salt into the above-mentioned reaction kettle, vacuumize, pressurize, and keep warm at 35~45°C (eg 35°C, 40°C, 45°C);

[0030] (3) Etherification: Put 100-250 parts by weight (example 100, 180, 250...

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PUM

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Abstract

The invention discloses carboxymethyl starch ether and a production method, and the product is made from starch, sodium hydroxide, alcohol, water, cross-linking agent, catalyst and industrial salt through cross linking, alkalization, etherification and basification. The product quality of the invention is simple, the production method is simple, and the operation is easy. The product is detected under 25 DEG C, the viscosity index of 2 percent of aqueous solution can reach above 30000 mPas, the substitution degree (DS) is larger than or equal to 0.2, the pH value is 6.5 to 9, the drying loss ratio is less than or equal to 12 percent, chloride (calculated according to Cl) is less than or equal to 0.002 percent, ferro is less than or equal to 0.03 percent, and arsenic (As) is less than or equal to 0.002 percent.

Description

Technical field: [0001] The invention relates to a carboxymethyl starch ether and a production method. Background technique: [0002] Existing sodium carboxymethyl starch product, because the restriction of raw material and technology, product quality index is not ideal. Invention content: [0003] The object of the present invention is to provide a kind of good carboxymethyl starch ether of product quality and production method. [0004] Technical solution of the present invention is: [0005] A kind of carboxymethyl starch ether is characterized in that: it is made through crosslinking, alkalization, etherification, alkalization by the raw material of following weight part: [0006] Starch 100 parts [0007] Sodium hydroxide 16~80 parts [0008] Alcohol 200~600 parts [0009] 20-80 parts of water [0010] Crosslinking agent 0.02~0.5 part [0011] Catalyst 0.01~0.3 parts [0012] Industrial salt 0.1~1.5 parts [0013] Etherifying agent 10-90 parts. [0014] The ...

Claims

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Application Information

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IPC IPC(8): C08B31/08
Inventor 王进平
Owner 王进平
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