Copolymer of vinylpyrrolidone and vinylacetate
STRUCTURAL FORMULA:
Formula:(C6H9NO) x (C4H6O2)y
CTFA NOMENCLATURE: PVP/VA copolymer
CAS NO.: 25086-89-9
CHARACTERS:
√ In the form of powder, 50% aqueous solution or alcohol solution..
√ Able to form stiff, bright and washable film.
√ Soluble in most common organic solvents.
SPECIFICATIONS:
|
VP/VA
|
K value
|
VP+VAc |
Water
|
Solids
|
|
PVP/VA64 powder
|
60/40
|
26-34
|
≤0.4%
|
≤5.0%
|
≥95%
|
|
PVP/VA 64W
|
60/40
|
26-34
|
≤0.2%
|
48-52%
|
48-52%
|
|
PVP/VA64E
|
60/40
|
30-36
|
≤0.2%
|
≤0.5%
|
48-52%
|
|
PVP/VA 37E
|
30/70
|
26-34
|
≤0.2%
|
≤0.5%
|
48-52%
|
|
PVP/VA 73E
|
70/30
|
30-38
|
≤0.2%
|
≤0.5%
|
48-52%
|
|
PVP/VA73W
|
70/30
|
24-32
|
≤0.2%
|
48-52%
|
48-52%
|
APPLICATOINS:
√ Film-formers and stiffeners in hair care products.
√ Film formers in skin care preparations, suitable for eye and face dressings.
√ Rewettable Adhesives and adhesives for paper.
√ Thickeners and protective colloids for printing inks.
√ Dispersants and stabilizers for all kinds of suspensions and emulsions.
PACKING:
20kgs fiber drum (powder)
150kgs or 1000kgs plastic drum (liquid)
COPOVIDONE
Copolymer of vinylpyrrolidone and vinylacetate (PVP/VA64---EP grade)
Formula:(C6H9NO) x (C4H6O2)y
CTFA NOMENCLATURE: PVP/VA copolymer
CAS NO.: 25086-89-9
CHARACTERS:
√ In the form of powder.
√ Able to form stiff, bright and washable film.
√ Soluble in most common organic solvents.
SPECIFICATIONS:
|
K value
|
27.0-33.0
|
|
Monomers (VP+VAc)
|
≤0.4%
|
|
Water
|
≤5.0%
|
|
Sulfate ash
|
≤0.1%
|
|
Nitrogen
|
7.0-8.0%
|
|
Heavy metals（as Pb）
|
≤20ppm
|
|
Acetaldehyde
|
≤500ppm
|
|
Hydrazine
|
≤1ppm
|
|
Peroxides（as H2O2）,ppm
|
≤400
|
APPLICATOINS:
√ Binder for tablets, granules and hard gelatin capsules.
√ Tablet coatings, film-forming agents in sprays.
√ Matrix-forming agents, capsule shell, transdermal system
PACKING:
20kgs fiber drum (powder)
|
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