VP/VA Copolymers

VP/VA Copolymers produce transparent, flexible, oxygen permeable films which adhere to glass, plastics and metals. Vinylpyrrolidone/Vinyl acetate (VP/VA) resins are linear, random copolymers produced by the free-radical polymerization of the monomers in diferrent ratios.VP/VA Copolymers are available as white powders or clear solutions in ethanol and water. VP/VA copolymers are widely used as film formers because of their film flexibility, good adhesion, luster, water remoistenability and hardness. These properties make PVP/VA copolymers suitable for a variety of industrial, personal care and pharmaceutical products.
Request a Quote

PRODUCTS DETAILS

*Cosmetic Grade VP/VA Copolymers with different rations of N-Vinylpyrrolidone to Vinyl Acetate,soluble in most organic solvents.Which exists in powder,water solution and ethnol solution form. VP/VA  Copolymers’ aqueous solutions are non-ionic, neutralization not required,  Resultant films are hard, glossy, and water-removable; Tunable viscosity, softening point and water sensitivity depending on VP/VA ratio; Good compatibility with many modifiers, plasticizers, spray propellants and other cosmetic ingredients,and the hydroscopicity decreases in proportion to the ration of Vinyl acetate.  Key Technical Parameters: Product PVP/VA 64 Powder PVP/VA 64W PVP/VA 73W Appearance White to creamy white,free-flowing powder Transparent to slight yellowish liquid VP/VA 60/40 60/40 70/30 K Value 27-35 27~35 27~35 Monomers 0.1% max. 0.1% max. 0.1% max. Water 5.0% max. 48~52% 48~51% Solid Content 95% max. 48~51% 48~52% Sulphated Ash 0.1% max. 0.1% max. 0.1% max. pH Value(10% in water) 4.0~7.0 4.0~7.0 4.0~7.0 Applications: 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.                                            ************************************************ *Pharmaceutical Grade VP/VA Copolymer-Copovidone with 60/40 ration of N-Vinylpyrrolidone to Vinyl Acetate,soluble in most organic solvents.Which exists in powder,Copovidone forms hard,water-removable and glossy films,it has excellent compatibility with many plasticizers and modifiers. Good solubility in water,alcohol and other organic solvents. Key Technical Parameters: Appearance White or yellowish-white powder or flakes,hygroscopic Viscosity(Express as K Value) 25.20~30.24 Solubility Freely soluble in water,in alcohol and in methylene chloride Identifications A.Infrared Absorption B.A red colour appears C.A violet colour appears Peroxides(Expressed as H2O2) 400 ppm max. Hydrazine 1 ppm max. Monomers(VP+VA) 0.1% max. Impurity A(2-Pyrrolidone) 0.5% max. Heavy Metals(as Pb) 20 ppm max. Loss on Drying 5.0% max. Sulphated Ash 0.1% max. Ethenyl Acetate Content 35.3~42.0% max. Nitrogen Content 7.0~8.0 % Applications: Copovidone mainly used as water-soluble binder and dry binder in wet/direct granulation processes,also it can be used as film forming materials. *Water soluble tablet binder,suitable for wet or dry granulation/direct compression processes. *Film Former:permeable film coating for tablet and sugar coatings to protect against splitting,decrease moisture sensitivity and provide good film adhesion.                                              *********************************************** *Technical Grade 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 properties,coupled with the ability to control their hydrophilicity through monomer composition,lead to extensive its industrial application. Key Technical Parameters: Product PVP/VA 64 Powder PVP/VA 64W PVP/VA 73W Appearance White to creamy white powder Transparent to slight yellowish liquid VP/VA 60/40 60/40 70/30 K Value 27-35 27~35 27~35 Monomers 0.2% max. 0.2% max. 0.2% max. Water 5.0% max. 48~52% 48~51% Solid Content 95% max. 48~51% 48~52% Sulphated Ash 0.1% max. 0.1% max. 0.1% max. pH Value(10% in water) 4.0~7.0 4.0~7.0 4.0~7.0 Applications: VP/VA copolymers widely industrial application are in hot melt adhesives,photoresist binders and coatings for ink jet media paper,plastic film,Agriculture & other substrates. *Coatings on paper,film,other substrates                  *Water remoistenable adhesives *Water soluble adhesives                                              *Decorative and protective coatings *Photoresist/solder mask binders                               *Agricultural chemicals *Bioadheives                                                                    *Protective masks              *Plant leaf sprays  

Contact us

Please feel free to give your inquiry in the form below We will reply you in 24 hours

Leave YourMessage

Thank you! We will reply you via email within 24 hours.

return