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Anti-caking agent for super absorbent resin

A technology of superabsorbent resin and anti-caking agent, applied in the field of anti-caking agent, can solve the problems of inconvenient operation of mechanical stirring, achieve good effect and save energy

Inactive Publication Date: 2016-06-15
CHANGZHOU KUNYU ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The object of the present invention is to provide an anti-caking agent for superabsorbent resins to solve the inconvenience of mechanical stirring in the traditional method for preventing caking of superabsorbent resins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0031] Super absorbent resin is cross-linked polyacrylamide. Put 4.00 grams into 2000 grams of tap water at room temperature (25°C) without stirring. After five minutes, white lumps were still clearly visible. Use a 5 by 28 mm slotted spoon to remove the white lumps and weigh them.

[0032] The whole process was repeated three times, and the weights of the white lumps were 8.62 grams, 8.25 grams, and 9.50 grams, respectively. The average weight is 8.79 grams.

example 2

[0034] Baking powder "Great Value" brand, containing sodium bicarbonate, sodium aluminum sulfate (sodium aluminum sulfate), monocalcium phosphate (monocalciumphosphate), corn starch (cornstarch), etc.

[0035] Preparation of super absorbent resin containing 10% baking powder: Mix 1.50 g of baking powder and 13.50 g of super absorbent resin with a spoon.

[0036] At room temperature (25° C.), put 4.44 grams of the above-mentioned superabsorbent resin containing 10% fermentation powder (4.00 grams of pure superabsorbent resin) into 2000 grams of tap water each time without stirring.

[0037] Repeat the above process three times, each time there is no white lump after five minutes. Using a spoon with a 5 by 28 mm slot to scoop out the white lumps does not come out every time. So the white lump weights are 0.00 grams, 0.00 grams, and 0.00 grams, respectively. The average weight is 0.00 grams.

example 3

[0039] Preparation of superabsorbent resin containing 15% sodium bicarbonate and citric acid mixture (2.4850 grams of sodium bicarbonate, 1.9485 grams of citric acid): 2.55 grams of the mixture and 14.45 grams of superabsorbent resin were mixed evenly with a spoon.

[0040] At room temperature (25° C.), 4.71 grams of the above-mentioned superabsorbent resin containing 15% of the mixture (with 4.00 grams of pure superabsorbent resin) were put into 2000 grams of tap water each time without stirring.

[0041] Repeat the above process three times, each time there is no white lump after five minutes. Using a spoon with a 5 by 28 mm slot to scoop out the white lumps does not come out every time. So the white lump weights are 0.00 grams, 0.00 grams, and 0.00 grams, respectively. The average weight is 0.00 grams.

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PUM

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Abstract

An anti-caking agent for superabsorbent resin is characterized in that it includes sodium bicarbonate or potassium bicarbonate, and citric acid or tartaric acid. The added amount of the anti-caking agent for the superabsorbent resin is 2-30% of the weight of the superabsorbent resin. The superabsorbent resin caking agent of the present invention completely or partially replaces mechanical agitation by generating air bubbles to prevent agglomeration when mixing a superabsorbent resin (PAM) solution, and helps to break up formed superabsorbent resin agglomerates. The gas produced is safe and environmentally friendly. The superabsorbent resin caking agent of the invention has good anti-caking effect, and saves a large amount of energy consumed in mechanical stirring.

Description

technical field [0001] The invention relates to an anti-caking agent, in particular to an anti-caking agent for superabsorbent resin. Background technique [0002] Super absorbent resins (PAM) are macromolecules containing hydrophilic groups and cross-linked structures. Divided by raw materials, there are starch-based (grafted, carboxymethylated, etc.), cellulose-based (carboxymethylated, grafted, etc.), synthetic polymer-based (polyacrylic acid, polyvinyl alcohol, polyoxygen Vinyl, etc.) several categories. [0003] Superabsorbent resin (PAM) can generally absorb water equivalent to more than 100 times the volume of the resin, and is widely used in disposable sanitary products, agricultural fields, and waterproof industries. [0004] When used as agricultural water retaining agent, industrial dust suppressant, etc.; super absorbent resin needs to be made into a solution. However, the superabsorbent resin is easy to agglomerate in the process of making a solution. This w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/05
Inventor 叶强
Owner CHANGZHOU KUNYU ENVIRONMENTAL PROTECTION TECH CO LTD
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