Vinylpyrrolidone Vinyl Acetate Copolymers

Polymers in the four ranges of vinylpyrrolidone content 30 50 60 and 70 percent are produced in ethanol or isopropanol.

Vinylpyrrolidone vinyl acetate copolymers. Cite this chapter as. 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. Polyvinylpyrrolidone excipients for pharmaceuticals. Pvp va copolymers are available as white powders or clear solutions in ethanol isopropanol and water.

Copovidone is also used as a solubilizing agent granulating agent retardant and film former. 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. Acetic acid vinyl ester polymer with 1 vinyl 2 pyrrolidinone. 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.

2005 vinylpyrrolidone vinyl acetate copolymer copovidone. Poly 1 vinylpyrrolidone co vinyl acetate average mw 50 000 gpc vs. Sigma aldrich online catalog product list. 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.

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