Vinylpyrrolidone/vinyl acetate copolymer(VP/VA Copolymer)

Features:

-White or yellowish-white powder; Colorless or yellowish clear liquid

-Soluble in water, ethanol and other organic solvents, stable chemical properties at room temperature. 

-Have high temperature resistance and good resistance to acids, alkalis and solvents.

-Have excellent film formation, adhesion, moisture absorption and surface activity, can make the film layer glossy.

                

          

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 industrial uses:

■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.

             

              

       

Cosmetic Grade:

Item	VA28W	VA37E	VA55E	VA55E	VA64E	VA64W	VA73E	VA73W
VP/VA ratio	20/80	30/70	50/50	50/50	60/40	60/40	70/30	70/30
K value	16-22	24-32	24-32	22-30	30-36	30-36	30-38	24-32
pH value       (10% Solution)	6-8	-	-	6-8	-	6-8	-	6-8
Moisture/%	-	≤0.5	≤0.5	-	≤0.5	-	≤0.5	-
Monomers (NVP,VA)/%	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02	≤0.02
Solid content/%	50±2	50±2	50±2	50±2	50±2	50±2	50±2	50±2
Residue on Ignition/%	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1	≤0.1
Heavy metals/ppm	≤20	≤20	≤20	≤20	≤20	≤20	≤20	≤20

Pharmaceutical  Grade(USP/EP/BP):

Item	K value	Monomers (NVP,VA)/%	Residue on Ignition/%	Heavy metals/ppm
VA64(powder)	25.2-30.8	≤0.1	≤5.0	≤10
Nitrogen/%	Aldehydes/ppm	Limit of peroxide /ppm	Limit of hydrazine /ppm	α-pyrrolidone/%
7.0-8.0	≤500	≤400	≤1.0	≤0.5

          

        

     

Package and Storage:

Powder: Packed in 25 kg fiber drum, inner lined with PE bags,

Solution:Packed in 200 kg plastic drum/Iron drum or IBC.

Special packing is available according to customer's requirement.

Preserve in tight containers.