Vinylpyrrolidone Vinyl Acetate Copolymers

Pvp va copolymers are available as white powders or clear solutions in ethanol isopropanol and water.

Vinylpyrrolidone vinyl acetate copolymers.

Acetic acid vinyl ester polymer with 1 vinyl 2 pyrrolidinone. Polymers in the four ranges of vinylpyrrolidone content 30 50 60 and 70 percent are produced in ethanol or isopropanol. Copovidone is also used as a solubilizing agent granulating agent retardant and film former. Poly vinylpyrrolidone pvp and copolymers.

Sigma aldrich online catalog product list. Poly 1 vinylpyrrolidone co vinyl acetate 64 or pvp va64 contains 1 vinylpyrrolidone and vinyl acetate in the ratio of 6 4. Copolymer is widely used in the production of the solid dispersion due to its good effect in the stabilization of solid dispersions. Polyvinylpyrrolidone vinyl acetate pvp va resins are linear random copolymers produced by the free radical polymerization of the monomers in ratios varying from 70 30 to 30 70 vinyl acetate to vinylpyrrolidone.

Poly 1 vinylpyrrolidone co vinyl acetate average mw 50 000 gpc vs. Water soluble copolymers with vinylpyrrolidone are used as color transfer inhibitors in detergent preparations with vinyl acetate as a coating of lithographic printing plates with acrylic acid esters or methacrylic acid esters or 2 hydroxyethyl methacrylate as adhesion promoters in paints or with acrylonitrile as precursors for carbon fibers. Vp va copolymers are with different rations of vinylpyrrolidone to vinyl acetate and available as white powder or clear transparent solutions in water ethanol and isopropanol it s forms hard glossy flexible water removable oxygen permeable films which adhere to glass plastics and metals these pro. Polyvinylpyrrolidone excipients for pharmaceuticals.

2005 vinylpyrrolidone vinyl acetate copolymer copovidone. Linear random copolymers of vinyl pyrrolidone vp and vinyl acetate va family includes both hydrophobic and hydrophilic thermoplastic oxygen permeable polymers solubility varies with the proportion of vinyl acetate insoluble in ethers and aliphatic hydrocarbons soluble in water if vp content is greater than 50.