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A kind of preparation method of dry-process octenyl succinic anhydride modified guar gum and the product prepared by the method

A technology of octenyl succinic anhydride and guar gum, which is applied in the field of preparation methods and products obtained by the method, can solve the problems of high content of water-insoluble matter, limited application of guar gum, difficult control of viscosity, etc., and achieve product performance Stable, good degree of substitution, easy to control viscosity

Active Publication Date: 2018-11-13
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the guar collagen powder in the prior art often has the following disadvantages: slow dissolution rate, high water-insoluble content, difficult control of viscosity, etc.
These shortcomings greatly limit the application of guar gum, so it needs to be modified to make it more widely used

Method used

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  • A kind of preparation method of dry-process octenyl succinic anhydride modified guar gum and the product prepared by the method

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preparation example Construction

[0019] The first aspect of the present invention provides a kind of preparation method of octenyl succinic anhydride modified guar gum, it is characterized in that, comprises the following steps:

[0020] (1) Add a certain amount of guar collagen powder and a certain amount of glidant to a stirrable sealed reaction vessel, fully stir to make it evenly mixed;

[0021] (2) Vacuumize repeatedly, fill nitrogen 3 to 5 times, then slowly spray a certain amount of sodium hydroxide or potassium hydroxide aqueous solution with a mass fraction of 3% into the reaction vessel, raise the temperature to 40°C-50°C, and alkalize 30-70 minutes;

[0022] (3) Add a certain amount of octenyl succinic anhydride and mix evenly, and heat up to 50-60°C, and react at constant temperature for 2-4 hours;

[0023] (4) drying, pulverizing, and passing through a 200-mesh sieve to obtain a finished product.

[0024] In a preferred embodiment, in the method, the step (2) is: slowly injecting a certain amou...

Embodiment 1

[0031] 1. Add 200g of guar collagen powder and 8g of sodium chloride as a flow aid into a stirrable sealed reaction vessel, stir well to make it evenly mixed.

[0032] 2. Vacuum repeatedly, fill with nitrogen 3 to 5 times, then slowly spray 1.0 g of 3% sodium hydroxide aqueous solution into the reaction vessel, raise the temperature to 40°C-50°C, and alkalize for 30 to 70 minutes.

[0033] 3. Add 80g of octenyl succinic anhydride and mix evenly, raise the temperature to 50°C, and react at constant temperature for 2-4 hours.

[0034] 4. Dried, crushed, and passed through a 200-mesh sieve to obtain a finished product.

Embodiment 2

[0036] 1. Add 200g of guar collagen powder and 4g of sodium sulfate as a flow aid into a stirrable sealed reaction vessel, stir well to make it evenly mixed.

[0037] 2. Vacuum repeatedly, fill with nitrogen 3 to 5 times, then slowly spray 1.0 g of 3% sodium hydroxide aqueous solution into the reaction vessel, raise the temperature to 40°C-50°C, and alkalize for 30 to 70 minutes.

[0038] 3. Add 60g of octenyl succinic anhydride and mix evenly, and raise the temperature to 50°C, and react at constant temperature for 2-4 hours.

[0039] 4. Dried, crushed, and passed through a 200-mesh sieve to obtain a finished product.

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Abstract

The invention provides a dry-method octenyl succinic anhydride modified guar gum preparation method. A specific step is adopted, and under the protection of nitrogen, guar collagen powder, a flow aid, 3% sodium hydroxide or potassium hydroxide aqueous solution, and octenyl succinic anhydride are allowed to react, and then dried, crushed and sieved by a 200-mesh sieve to prepare a finished product. The invention also provides octenyl succinic anhydride modified guar gum prepared by using the method. The preparation method disclosed by the invention does not require a large amount of organic solvent, the labor intensity and the energy consumption are reduced, the safety risk can be effectively reduced, and the production cost is saved. The octenyl succinic anhydride modified guar gum prepared by the preparation method is good in substitution degree, viscosity is easy to control, the product performance is stable, the product has no toxicity and no peculiar smell, and can be suitable for being used as various additives and has huge application values in the fields of papermaking, foods, washing products and the like.

Description

technical field [0001] The invention relates to a preparation method of dry-process modified guar gum and a product obtained by the method, in particular to a preparation method of dry-process octenyl succinic anhydride modified guar gum and the product obtained by the method. Background technique [0002] Guar gum is a natural galactomannan gum extracted from the endosperm of guar bean seeds grown in India, Pakistan and other places. The structural backbone of guar gum is composed of D-mannose linked by β-1,4-glycosidic bonds, and the side chains are heterogeneously linked by a single D-galactose via α-1,6-glycosidic bonds. chain of D-semimannose C 6 superior. Due to its unique molecular structure and naturalness, it is widely used in food, medicine, petroleum, paper and other industries. It is worth mentioning that the guar gum aqueous solution is a pseudoplastic fluid, and the macromolecules are in a entangled network structure in a natural state, so it is used in many...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B37/00
Inventor 施晓旦高龙李改霞
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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