Polyvinylpyrrolidone Vinyl Acetate

Pvp va copolymer is poorly absorbed orally and largely excreted intact in the faeces.

Polyvinylpyrrolidone vinyl acetate.

At 50 rh the typical equilibrium moisture content is approximately 10 fig. Supply intermediates for pharmaceuticals agrochemicals dyestuff electro chemicals cosmetics perfume etc. Custom manufacturing and co developing new chemicals under signing secret. Copovidone pvp pva is the random linear copolymer of n vinyl 2 pyrrolidone and vinyl acetate in a 60 40 ratio making it a derivative of pvp.

Ullmann s encyclopedia of industrial chemistry. Pvp va polymers produce transparent flexible oxygen permeable films which adhere to glass plastics and metals. The panel on food additives and nutrient sources added to food provides a scientific opinion on the use of polyvinylpyrrolidone vinyl acetate pvp va copolymer in food supplements. Wiley vch verlag gmbh co.

You can also browse global suppliers vendor prices price manufacturers of poly 1 vinylpyrrolidone co vinyl acetate 25086 89 9. Materials science poly vinylpyrrolidinone pvp copolymers. In cosmetics and personal care products vp va copolymer is used primarily in the formulation of hair care products but can also be found in skin and nail products. 190845 poly 1 vinylpyrrolidone co vinyl acetate email this page to a friend.

Federal republic of germany. Addition of vinyl acetate to the polymer chain reduces the hydrophilicity and hygroscopicity of the pvp homopolymer. 190845 sigma aldrich poly 1 vinylpyrrolidone co vinyl acetate average m w 50 000 gpc vs. Pvp can be used to screen for phenolic properties as referenced in a 2000 study on the effect of plant extracts on insulin production.

In microscopy pvp is useful for making an aqueous mounting medium. Polyvinylpyrrolidone vinyl acetate vp va copolymer is a white free flowing powder. Pvp va copolymers are available as white powders or clear solutions. 2003 to present p.

Visit chemicalbook to find more poly 1 vinylpyrrolidone co vinyl acetate 25086 89 9 information like chemical properties structure melting point boiling point density molecular formula molecular weight physical properties toxicity information customs codes. The main areas of use are the production of polyvinylpyrrolidone and copolymers the preferred comonomers being vinyl acetate and methyl acrylate. No genotoxicity data are available. 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.

Is supplier for polyvinylpyrrolidone vinyl acetate. Food and drug administration fda has approved this chemical for many uses and it is generally considered safe.