PVP (Polyvinylpyrrolidone) Supplier South Africa

What Is PVP?

Polyvinylpyrrolidone (PVP, povidone) is a synthetic water-soluble polymer of N-vinylpyrrolidone, available in a range of molecular weight grades described by their K-values (K-15 to K-90). The K-value reflects the viscosity of a dilute solution and correlates with molecular weight — higher K-value indicates higher molecular weight and greater film strength, while lower K-value provides better solubility and lower viscosity. PVP is amphiphilic — it has both polar (pyrrolidone group) and non-polar (backbone) character — which gives it excellent affinity for polar surfaces, good dispersant properties, and wide solubility in water and many organic solvents.

Hårpleje og kosmetiske anvendelser

In hair styling products, PVP is a primary film-forming polymer — it deposits on hair fibres on drying to form a clear, glossy film that provides hold, body, and stiffness to the hair. Higher K-value grades (K-90) provide firmer hold for strong-hold hairsprays and styling gels; lower K-value grades (K-30) provide lighter, more flexible hold. PVP is also used in mascara and eyeliner as a film-former and binder, in nail care products, and in skincare formulations as a dispersant and film-former that improves the spreading and adhesion of colour cosmetic formulations.

Farmaceutiske applikationer

In pharmaceutical tablet manufacturing, PVP (typically K-30) is one of the most widely used binders — added as a solution in wet granulation or as a dry powder binder to provide compressibility and tensile strength to tablet granules. It is also used as a solubiliser for poorly water-soluble drugs (amorphous solid dispersions), as a complexing agent, and in ophthalmic lubricating drops. Terracore Chemicals supplies PVP in K-30 and K-90 grades for cosmetic and pharmaceutical manufacturing.