PVP. Plasdone™ K-29/32 polymer by Ashland Specialty Chemical acts as a rheology modifier. It is a stable, water-soluble polyvinylpyrrolidone that meets U.S., European and Japanese pharmacopoeia specifications for Povidone.
It forms complexes with catechins, just as it does with many other compounds that cause discoloration of teeth. The polymer can be effectively used to bind and remove stains through hydrogen bonding with chemical compounds. Plasdone™ K-29/32 polymer is used in oral care formulations.
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