Leave Your Message
Online Inuiry
  • icons02cfySkype
    • 6503fd0l7t
    page-headho4
    Categories
    Featured Products
    Ascorbyl Tetraisopalmiate976

    Ascorbyl Tetraisopalmitate
    Ethyl Ascorbic Acidpyu

    Ethyl Ascorbic Acid
    Magnesium Ascorbyl Phosphate92e

    Magnesium Ascorbyl Phosphate
    Hydroxypinacolone Retinoate 10%u7l

    Hydroxypinacolone Retinoate 10%
    Bakuchiolad7

    Bakuchiol
    Ascorbyl Glucosidem3p

    Ascorbyl Glucoside
    Tocopheryl Glucosideaga

    Tocopheryl Glucoside
    Ectoine5ki

    Ectoine
    010203
    VP/VA Copolymers
    VP/VA Copolymers
    VP/VA Copolymers

    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.
    • 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
    Contact us
    Product Detail
    Why Choose YR Chemspec

    product detail

    *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

    Why Choose YR Chemspec

    *SGS Audited & ISO Certified Company

    *An Industry-University-Research Collaborative Innovation Company,with Strong Technical Support 

    *Broad Range Portfolio of Personal Care Raw Materials & Active Ingredients

    *More than 20 Years Market Reputation

    *Sample,Small Order and Flexible Payment Support

    *100% Fulfill as Promised

    *100% On-time Delivery

    *100% Guaranteed Compensation Prior to Investigation,if any Quality Discrepancy

    *100% Efficient Packaging Services Designed to Cut Costs for Partners

    *100% Full Traceability of Services and Raw Materials

    *100% On-Time Response to Customers’ Concerns and Inquiries