Polyvinylpyrrolidone VA64 Powder EXW Price
CTFAName: VP/VA copolymer
Pharmacopeia Name:Copovidone(Copovidonum)
Chemical Description:Vinylpyrrolidone with Vinyl, Acetate Copolymer
CAS NO: 25086-89-9
Physical Properties: exists as white or milky white powder, and colorless or slight yellow transparent liquid. The clarity of the aqueous solution depends on the proportion of vinylpyrrolidone and vinylacetate.
Product Properties: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 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.
Specifications:
| PVP/ VA64 |
Pharm Grade |
Cosmetic Grade |
| Appearance |
White or creamy white,free-flowing power |
| Heavy metal ppm max |
20 |
20 |
| Moisture %max |
5 |
5 |
| Sulphate ash %max |
0.1 |
0.1 |
| K value |
25.4-34.2 |
34-36 |
| VA content % |
35.3-42 |
48-52 |
| Nitrogen content % |
7.0-8.0 |
7-8 |
| VP+VAC % max |
0.1 |
0.1 |
| PH value (5% in water) |
4-7 |
4-7 |
| Aldehyde ppm max |
500 |
|
| Peroxide ppm max |
400 |
|
| Hydrazine ppm max |
1 |
|
| Monomers %max |
0.1 |
|
| two-Pyrrolidone %max |
0.5 |
|
Applications:In view of it's excellent adhesiveness ,film hard and other properties,Copovidone mainly used as water-soluble binder and dry binder in wet/direct granulation processes,also it can be used as film forming materials.
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.
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