Polyaspartic Acid, Metal Corrosion Inhibitor, Green Water Treatment Agent

Polyaspartic acid, as a new type of green water treatment agent, is applied in the field of industrial circulating cooling water treatment. Polyaspartic acid can chelate multivalent metal ions such as calcium, magnesium, copper, and iron, especially changing the crystal structure of calcium salts to form soft scales. It can be used in water treatment fields such as industrial circulating water, boiler water, reverse osmosis water, oilfield water, and seawater desalination. It performs well in high hardness, high alkalinity, high pH value, and high concentration ratio systems. PASP has better scale inhibition effect than commonly used  scale inhibitors. The combination of PASP and PBTCA has a synergistic effect.
Polyaspartic acid is used as a metal corrosion inhibitor. Polyaspartic acid can achieve good corrosion inhibition effect when the pH is above 10. Polyaspartic acid with a lower concentration at pH 8-9 has a better corrosion inhibition effect in seawater. Polyaspartic acid can be compounded with organic phosphorus, sodium tungstate, quaternary ammonium salts, zinc salts, molybdate salts, oxidized starch, etc. to achieve better corrosion inhibition effects.
The application of polyaspartic acid in the field of agriculture. Polyaspartic acid itself is not a fertilizer, but it can be used as a fertilizer enhancer. Polyaspartic acid has a chelating effect on metal ions. A certain molecular weight of polyaspartic acid can enrich nitrogen, phosphorus, potassium, and trace elements to supply plants, enabling them to use fertilizers more effectively and improve crop yield and quality. The addition of polyaspartic acid can increase crop yield and improve soil quality.
The application of polyaspartic acid in the pharmaceutical field. Encapsulating anti-tumor drug  in polymer micelles of polyethylene glycol polyaspartic acid, where hydrophobic oligoaspartic acid can stabilize the micelles, making them suitable for use as drug carriers. Polyaspartic acid protects tubular cells by preventing electrophysiological changes in guanidine containing substances. Polyaspartic acid has an inhibitory effect on the interference of gentamicin on the metabolism of cochlear phospholipid tissue.
The application of polyaspartic acid in the field of hygiene. Polyaspartic acid, as a new type of polymer, can react with crosslinking agents to further synthesize super absorbent agents. This absorbent agent is easily degradable and can be used as fertilizer without causing any pollution to the environment. This characteristic meets the requirements of hygiene products for super absorbent resins.
Polyaspartic acid can be used as a cleaning agent, not only replacing phosphorus based detergents, but also because it is safe, non-toxic, and non irritating, it can be added to dishwashing detergents, and its cleaning effect is better than that of water and polycarboxylates. It can also be used as a drilling fluid viscosity reducer, coal water slurry dispersant, washing enhancer, etc., and can also be applied to cosmetics and health products.