Copolymer of vinylpyrrolidone and vinyl acetate CAS NO.25086-89-9

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Min.Order: 0 Metric Ton
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Product Details

Keywords

Copovidone
Copolymer of vinylpyrrolidone and vinylacetate
VP/VA

Quick Details

ProName: Copolymer of vinylpyrrolidone and viny...
CasNo: 25086-89-9
Appearance: White or milky powder, and colorless o...
Application: used as firm-forming and hair-fixing a...
ProductionCapacity: Metric Ton/Day
Purity: 99.5%
LimitNum: 0 Metric Ton

Superiority

Properties of Copovidone

White or milky powder, and colorless or slight yellow transparent liquid. The clarity of the aqueous product depends 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.

Specifications of Copovidone

Cosmetic Grade:

Item	VP/VA ratio	K value	Vinylpyrrolidone %	Moisture %	Solid %	Heavy metal of lead ppm	PH (10% in water)	Sulfate Ash %
VP/VA37E (liquid)	30/70	24-32	≤0.02	---	50±2	≤20	6-8	≤0.1
VP/VA55E (liquid)	50/50	24-32	≤0.02	≤0.5	50±2	≤20	6-8	≤0.1
VP/VA55W (liquid)	50/50	22-30	≤0.02	---	50±2	≤20	6-8	≤0.1
VP/VA64E (liquid)	60/40	30-36	≤0.02	≤0.5	50±2	≤20	6-8	≤0.1
VP/VA64S	60/40	30-36	≤0.02	≤0.5	≥95	≤20	5-7	≤0.1
VP/VA64W(liquid)	60/40	30-36	≤0.02	---	50±2	≤20	6-8	≤0.1
VP/VA73E (liquid)	70/30	30-38	≤0.02	≤0.5	50±2	≤20	6-8	≤0.1
VP/VA73W(liquid )	70/30	24-32	≤0.02	---	50±2	≤20	6-8	≤0.1

Pharmaceutical Grade ( USP/EP/BP )

Item

K value

Ethenylacetates %

Limit of monomers %

Loss on drying %

Residue on ignition %

VA64(Powder)

25-34

35.3-42.0

≤0.1

≤5.0

≤0.1

Heavy metals ppm

Nitrogen%

Aldehydes ppm

Limit of peroxide ppm

Limit of hydrazine ppm

---

≤20

7.0-8.0

≤500

≤400

≤1

---

Tech grade (VP/VA64 powder):

Appearance	White to creamy white,free-flowing powder
K Value(Labled K value at 30)	27-35
Monomers(Residue VP+Residue VA)	0.1% max.
Heavy Metals	20 ppm max.
Water	5.0% max.
Solid Content	95% max.
Sulphated Ash	0.1% max.
pH Value(10% in water)	4-7

Application

●Cosmetics:

PVP/VA series products play a good role in firm-forming and hair-fixing agent. Its

hygroscopicity decreases with increase in the proportion of vinyl acetate in the molecular. This property is widely used as hair sprays and hair-set lotion. If being used with PVP K30, the effect would be enhanced.

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

dispersing systems

Binder in coatings and paint.