PVP/VA 73W PVP/VA PVP
VP/VA Copolymers with different rations of N-Vinylpyrrolidone to Vinyl Acetate,soluble in most organic solvents.Which exists in powder,water solution form.VP/VA compolymer forms hard,water-removable and glossy films,it has excellent compatibility with many plasticizers and modifiers,an the hydroscopicity decreases in proportion to the ration of Vinyl acetate.
VP/VA Copolymers are the excellent choice as film forming agent and hair-styling agent,which are suitable for fourmulations which used as film forming and viscosity modification,especially in hair styling products, such as Hair Gels,Aerosol gas sprays,Wet look sprays.
Copovidone(PVP VA64) is a copolymer of vinylpyrrolidone with vinyl acetate at the ration of 60:40,
supplied as white to creamy white,free-flowing powder.
Chemical Name:Copolymer of Vinylpyrrolidone with Vinyl Acetate
CAS NO.:25086-89-9
Properties:
*Soluble in water and most other organic solvents
*Forms hard,glossy,transparent,air-permeable,water removable films
*Lower hydroscopicity & better film former than Povidone.
Main Technical Parameters:
Appearance | White or creamy white,free-flowing powder |
Solution Appearace(5% in water) | Colorless and transparent liquid,lighter than B5,R7,BY5 |
Aldehyde (As acetaldehyde) ppm max. | 500 |
Peroxide(As H2O2) ppm max. | 400 |
Hydrazine pppm max. | 1 |
Monomers % max. | 0.1 |
Impurity A % max. | 0.5 |
Heavy Metals(As Pb) ppm max. | 20 |
Moisture % max. | 5.0 |
Sulphated Ash % max. | 0.1 |
K Value | 25.2-30.8 |
VA Content % | 35.3-42 |
Nitrogen Content % | 7.0-8.0 |
Applications & Benefits
*Tablet Binder,suitable in wet and dry granulations and direct compression tablet manufacturing processes.
*Improves compactability of other binders in direct compression tablet processes.
*Film coating,used for film promoters and sugar coatings to prevent splitting,bottom binder to prevent moisture sensitivity.
*Improves adhesion of tablet coatings to hydrophobic cores.
*Enhances appearance and color stability of tablet film coatings.
*Possesses excellent film forming properties and high substantivity to skin.
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