PVP/VA copolymer

PVP/VA copolymer (CAS 25086-89-9) is a film-forming polymer produced from vinylpyrrolidone and vinyl acetate monomers in varying ratios.

Where is PVP/VA copolymer used?

• Hair care: primary fixative in styling sprays, mousses, and gels, with VA content controlling hold strength and humidity resistance relative to the VP ratio
• Pharmaceutical tablet coating and transdermal patches: film former and adhesion promoter
• Printing inks and overprint varnishes: improves substrate adhesion and surface gloss on porous and non-porous substrates
• Skin care: incorporated into long-wear foundations and sunscreens to extend wear and improve water resistance
• It forms a flexible, breathable film that maintains cosmetic integrity on the skin.

Good to know: Grade selection is typically driven by the specific VP:VA ratio required for the final drug delivery system or coating thickness. Pharmaceutical-grade material is manufactured to meet USP/NF monograph requirements.

Commercial specifications

• VP:VA ratio commonly 60:40 or 70:30, the primary specification buyers use to match performance