PVP-A (PVP A Copolymer Series)
chemical structure:Copolymer of vinylpyrrolidone and vinylacetate
CTFA Name:PVP/ VA copolymer
CAS NO:25086-89-9
Physical Properties:
exists as white or milk white powder, and colorless or slight yellow transparent liquid. The clarity of the aqueous solution depends on the proportion of vinylpyrrolidone and vinylacetate.
specification:
Appearance (25℃) |
K value |
moisture% |
Aldehyde(as acetaldehyde)% |
PH(1% in water) |
monomer(VP+VA)% |
N% |
Sulfate ash% |
Heavy metals ppm |
Hydrazine(ppm) |
preoxides(ppm) |
White Powder |
25.4-34.2 |
<5.0 |
<0.2 |
5.0-7.0 |
<0.4 |
7.0-8.0 |
<0.1 |
<10 |
<1 |
<400 |
Application:
Cosmetic Industry: PVP A series products act film-former and hair-fixing agent in cosmetics. Their hygroscopicity decrease with the increasing of the proportion of vinylacetate in the copolymer. Other industries: It performs very well in remoistenable adhesive, adhesives for paper and coating. It can be used as viscosity-enhancing agent for printing ink a protecting aloud for lent-protecting chemicals.