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Manufacturer for China Chemical Pvp-a Solid Copolymers

Short Description:

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.


  • Product Name: Copolymer of Vinylpyrrolidone with Vinyl Acetate
  • INCI Name: VP/VA Copolymer
  • Pharmacopeia Name: Copovidone
  • Molecular Formula: (C6H9NO·C4H6O2)x
  • CAS NO.: 25086-89-9
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    Manufacturer for China Chemical Pvp-a Solid Copolymers Detail:

    We keep on with our business spirit of “Quality, Performance, Innovation and Integrity”. We goal to create much more worth for our customers with our rich resources, state-of-the-art machinery, experienced workers and exceptional providers for Manufacturer for China Chemical Pvp-a Solid Copolymers, We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.
    We keep on with our business spirit of “Quality, Performance, Innovation and Integrity”. We goal to create much more worth for our customers with our rich resources, state-of-the-art machinery, experienced workers and exceptional providers for Chemical Pvp-a, China Povidone, We hope we can establish long-term cooperation with all of the customers, and hope we can improve competitiveness and achieve the win-win situation together with the customers. We sincerely welcome the customers from all over the world to contact us for anything you need to have!Welcome all customers both at home and abroad to visit our factory. We hope to have win-win business relationships with you, and create a better tomorrow.
    *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

     


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