Vinylpyrrolidone Vinyl Acetate Copolymers

Copovidone is also used as a solubilizing agent granulating agent retardant and film former.

Vinylpyrrolidone vinyl acetate copolymers.

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

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. Poly 1 vinylpyrrolidone co vinyl acetate average mw 50 000 gpc vs. 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. 2005 vinylpyrrolidone vinyl acetate copolymer copovidone. Pvp va copolymers are available as white powders or clear solutions in ethanol isopropanol and water. 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.

Polyvinylpyrrolidone excipients for pharmaceuticals. 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.