Polyvinylpolypyrrolidone (polyvinyl polypyrrolidone, PVPP, crospovidone, crospolividone, or E1202) is a highly cross-linked modification of polyvinylpyrrolidone (PVP). The cross-linked form of PVP is used as a disintegrant (see also excipients) in pharmaceutical tablets. [1]

Pure polyvinylpolypyrrolidone (PVPP). Highly effective in removing oxidized and oxidizable polyphenols, browning compounds and off-flavors. Prevents and treats oxidation, prevents pinking and reduces bitterness.

Polyvinylpyrrolidone (PVP), also commonly called polyvidone or povidone, is a water-soluble polymer compound made from the monomer N -vinylpyrrolidone. [1] . PVP is available in a range of molecular weights and related viscosities, and can be selected according to the desired application properties. [2]

BASF’s unique polymerization process produces the purist polyvinylpolypyrrolidone, which is completely insoluble in must and wine. Divergan F is selective in binding phenolic species such as catechins and leucoanthocyanidins with minimal effect on flavor and aroma.

Pvpp is short for polyvinylpolypyrrolidone which is a polymerized and water/beer insoluble version of the soluble compound PVP (polyvinylpyrrolidone), a nylon-type polymer that has an even higher affinity for chemical bonding with polyphenols than the proteins present in beer have.

PVPP is a synthetic, high-molecular-weight clarifying agent made up of cross-linked monomer of polyvinylpyrrolidone. PVPP has long been used in the beverage industry as a polyphenol adsorbent (Siebert and Lynn, 1997, 1998). Although, it has been called as a “protein-like” fining agent, insoluble PVPP interacts with only few reactive groups.

Polyclar, the brand name for PVPP plastic particulate, is a unique fining agent that absorbs phenolic compounds and unwanted tannins as well and deactivates oxidative enzymes within the wine. It is especially useful for removing oxidative odors and preventing browning in whites and reds, especially when used in conjunction with activated charcoal.

Learn all about the usage of PVPP in winemaking for the purpose of wine clarifying from professional winemakers at Presque Isle Wine Cellars. View more information and how-to's on wine making on our winemaking 101 page.

Polyvinylpolypyrrolidone (PVPP). Labelling; The label must indicate that PVPP is for oenological usage, minimum guaranteed efficiency vis-à-vis safety test and storage conditions. Characteristics; Light powder, white and creamy white. Insoluble in water and in organic solvents. Insoluble in strong acid minerals and in alkaly. Test trials; 5.1.

Insoluble polyvinylpyrrolidone (PVPP) can be produced by the polymerisation of N‐vinyl‐2‐pyrrolidone in the presence of either caustic catalyst or N, N’‐divinyl‐imidazolidone.