Vinylpyrrolidone Vinyl Acetate Copolymers

Therefore combining vinylpyrrolidone with water insoluble vinyl acetate results in a copolymer that is still appreciably soluble in a variety of solvents but slightly more hydrophobic.

Vinylpyrrolidone vinyl acetate copolymers.

Copovidone is also used as a solubilizing agent granulating agent retardant and film former. Cite this chapter as. Poly 1 vinylpyrrolidone co vinyl acetate 64 or pvp va64 contains 1 vinylpyrrolidone and vinyl acetate in the ratio of 6 4. Copovidone vinylpyrrolidone vinyl acetate copolymer a more plastic and less hygroscopic copolymer is also having a high binding capacity and hence used as a dry binder in direct compression technique.

Copolymer is widely used in the production of the solid dispersion due to its good effect in the stabilization of solid dispersions. Polyvinylpyrrolidone excipients for pharmaceuticals. Poly vinylpyrrolidone pvp and copolymers. 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.

Poly 1 vinylpyrrolidone co vinyl acetate average mw 50 000 gpc vs. Pvp va copolymers are available as white powders or clear solutions in ethanol isopropanol and water. Acetic acid vinyl ester polymer with 1 vinyl 2 pyrrolidinone. 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.

Sigma aldrich online catalog product list. 2005 vinylpyrrolidone vinyl acetate copolymer copovidone.