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PVP-A Copolymer Series
PVP-A Copolymer Series
Product name: PVP-A Copolymer Series
Chemical Name: Copolymer of Vinylpyrrolidone and vinylacetate
CTFA Nomenclature: PVP/VA Copolymer
CAS No.:
25089-89-9
Molecular formula:
(C6H9NO)nx(C4H6O2)m(n=1.2m)
Structure:
Physical Properties: exists as white or milky white powder,and colorless or slight yellow transparent liquid.The clarity of the aqueous product depend on the proportion of vinylpyrrolidone and vinylacetate.The aqueous solution of VA37 is cloudy,and the others are clear at room temperature.The solution is slight acidic but not electrolytic.
 Specification:
 Cosmetic Grade:

Items

NVP/VA

K value

Vinylpyrrol idone%

Moisture %

Solid %

PH(5% in water)

Heavy metal of lead (ppm)

Sulfate ash %

VP/VA28W(liquid)
20/80
16-22
≤0.02
-
50±2
6-8
≤20
≤0.1
VP/VA37E(liquid)

30/70

24-32

≤0.02

-

50±2

6-8

≤20
≤0.1
VP/VA55E(liquid)
50/50
24-32
≤0.02
≤0.5
50±2
6-8
≤20
≤0.1
VP/VA55W(liquid)

50/50

22-30

≤0.02

-

50±2

6-8

≤20
≤0.1
VP/VA84E(liquid)
60/40
30-36
≤0.02
≤0.5
50±2
6-8
≤20
≤0.1
VP/VA84S

60/40

30-36

≤0.02

≤0.5

≥95

5-7

≤20
≤0.1
VP/VA84W(liquid)

60/40

30-36

≤0.02

-

50±2

6-8
≤20
≤0.1
VP/VA73E(liquid)

70/30

30-38
≤0.02
≤0.5
50±2

6-8

≤20
≤0.1
VP/VA73W(liquid)
70/30

24-32

≤0.02

-

50±2

6-8

≤20
≤0.1

Pharmaceutic Grade(USP26/USP30/EP5.0):

Items

K value

saponification Vali

Vinylpyrrolidone %

Loss on dry %

Sulfate ash %

VA64(powder)
26-34
230-274
≤0.01
≤5.0
≤0.1
Heavy metal ppm

Nitrogen %

Aldehydes ppm

Peroxide ppm

Hydrazine ppm

Impurity A (a-pyrrolidone)%
≤20ppm
7.0-8.0
≤500
≤400
≤1
≤0.5
 Application: PVP/VA series products play a good role as firm-forming and 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 enbanced.
 Other Utility:

.Remoistenable adhesive and other adhesives for paper.
.Viscosity-enhancing agent and protecting colloid for printing ink .
.Emulsing agent and protecting colloid for plant-protecting chemicals and other dispcrsing systems.
.Binder in coating.
.Stabilizer,levelling agent,color stabilizer in printing and dyeing industry.

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ADD:Room 501,No.218,Hengfeng Road,Shanghai,200070,China.   TEL:021-56610367/021-60821021  FAX:021-60821023  Email:postmaster@povidone.com.cn