Water soluble anti-yellowing agent used for high water absorbent resin

Abstract

The invention discloses a water soluble anti-yellowing agent used for high water absorbent resin. The water soluble anti-yellowing agent used for high water absorbent resin comprises, by weight, 10 to15 parts of ascorbic acid, 30 to 35 parts of sodium bisulfite, 5 to 10 parts of sodium sulfite, 5 to 10 parts of sodium nitrite, and 20 to 40 parts of methionine. According to a preparation method, areducing agent is adopted for preparation of the water soluble anti-yellowing agent, yellowing of acrylic acid high water absorbent resins in storage process is inhibited, the raw materials are easily available, the performance is stable, the water soluble anti-yellowing agent is green and is friendly to the environment, and the anti-yellowing agent cost is reduced by 90% or more.

Description

technical field [0001] The invention belongs to the technical field of anti-yellowing agents, and in particular relates to a water-soluble anti-yellowing agent for superabsorbent resins. Background technique [0002] Super Absorbent Resin (SAR for short), also known as "Super Absorbent Polymer" (SAP for short), "Super Absorbent Polymer", "Super Absorbent", etc. With a slightly cross-linked three-dimensional network structure, it can absorb and retain hundreds or even thousands of times its own weight in water. It is widely used in baby diapers, women's hygiene products, adult incontinence pads, agricultural and forestry water conservation, and desert control. Applications. [0003] The production process of superabsorbent resin needs to use refined acid, refined acid contains polymerization inhibitor MEHQ (50 ~ 200ppm), MEHQ belongs to phenolic substances, under certain humidity, temperature and oxygen, it will be oxidized into quinones The substance is brownish-yellow, wh...

AI Technical Summary

Problems solved by technology

[0005] At present, there are few reports on water-soluble anti-yellowing agents, and there is a blank in the application of superabsorbent resins. Therefore, according to the storage conditions and application fields of superabsorbent resins, anti-yellowing agents are developed to achieve good anti-yellowing properties. Yellowing properties are important

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