PVP-A copolymer series
Chemical Structure : Copolymer of vinylpyrrolidone and vinylacetate
CTFA Nomenclature : PVP/VA Copolymer
Physical Properties : Exists as white or milky white powder , and colorless or slight yellow transparent liquid. The clarity of the aqueous produt depend on the proportion of vinylpyrrolidone and vinylacetate. The aqueous solution of VA37 is cloudy, and the others are clear at room tempereture. The solution is slight acidic but not electrolytic.
Specification:
Technical grade
Catalog of Product |
VP/ VA |
K value |
NVP% |
Moisture% |
Solid% |
PH(10% in water) |
VA73liquid |
70/30 |
32–40 |
<0.2 |
- |
50±2 |
6-8 |
VA64liquid |
60/40 |
32–40 |
<0.2 |
- |
50±2 |
6-8 |
VA64powder |
60/40 |
32-40 |
<0.2 |
<5.0 |
>95 |
5-7 |
VA55liquid |
50/50 |
32-40 |
<0.2 |
- |
50±2 |
6-8 |
VA37liquid |
30/70 |
32-40 |
<0.2 |
- |
50±2 |
6-8 |
Cosmetic grade
Catalog of Product |
VP/VA |
K value |
NVP % |
Moisture % |
solid% |
PH(10% in water) |
lead mg/kg |
mercury mg/kg |
arsenic mg/kg |
methane
alcohol% |
VA73liquid |
70/30 |
32-40 |
<0.1 |
- |
50±2 |
6-8 |
<40 |
<1 |
<10 |
<0.1 |
VA73liquid |
60/40 |
32-40 |
<0.1 |
- |
50±2 |
6-8 |
<40 |
<1 |
<10 |
<0.1 |
VA64powder |
60/40 |
32-40 |
<0.1 |
<5.0 |
>95 |
5-7 |
<40 |
<1 |
<10 |
<0.1 |
VA55liquid |
50/50 |
32-40 |
<0.1 |
- |
50±2 |
6-8 |
<40 |
<1 |
<10 |
<0.1 |
VA37liquid |
30/70 |
32-40 |
<0.1 |
- |
50±2 |
6-8 |
<40 |
<1 |
<10 |
<0.1 |
Application:
Cosmetics : PVP/VA series products play a good role as film-forming ad hair-fixing agent. It´s hygroscopicicy decrease with increase in the proportion of vinylacetate in the molecular. This property is extremely used for PVP/VA as hair sprays and hair-set lotion. If used with PVPK30, the effect would be enhanced.
| Other utility : |
→Remoistenable adhesive and other adhesives for paper |
| |
→Remoistenable adhesive and other adhesives for paper |
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→Emulsing agent and protecting colloid for plant-protecting
chemicals and other dispersing systems |
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→Binder in coating |
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→Stabilizer, levelling agent, color stabilizer in printing and dyeing industry
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