Povidone, commonly known as PVP, is a versatile polymer available in various grades, with PVP K30 and PVP K90 being two of the most frequently used. The 'K' value in their nomenclature refers to their relative viscosity, which is directly related to their molecular weight and, consequently, their performance characteristics in different applications. Understanding these differences is crucial for formulators aiming to achieve specific product outcomes. NINGBO INNO PHARMCHEM CO.,LTD. offers insights into choosing the right PVP grade for your needs.

PVP K30 is characterized by a medium molecular weight, typically around 40,000-65,000 Daltons. This makes it a highly versatile ingredient, balancing good film-forming capabilities with easier dissolution and processing. As a popular PVP K30 binder tablet, it's widely used in pharmaceuticals for its excellent binding properties, contributing to tablet integrity and controlled disintegration. In cosmetics, it's favored for its ability to provide a medium hold in hair styling products without excessive stiffness.

On the other hand, PVP K90 has a significantly higher molecular weight, often exceeding 1,000,000 Daltons. This higher molecular weight translates to increased viscosity and stronger film-forming properties, providing a harder, more rigid hold, especially in hair styling applications. While PVP K90 offers superior film strength, it can be more challenging to dissolve and may require specific formulation techniques. The use of PVP K90 hair styling is often preferred when maximum hold and rigidity are desired.

In colored cosmetics, PVP K90 is sometimes preferred due to its potential for improved color evenness and transparency, although this can be formulation-dependent. The choice between K30 and K90 often comes down to the desired texture, hold, and processing ease for the specific application. For instance, if a less stiff, more flexible hold is needed, PVP K30 might be the better option, whereas for maximum rigidity, PVP K90 might be selected.

NINGBO INNO PHARMCHEM CO.,LTD. provides both PVP K30 and PVP K90, ensuring that formulators have access to the grades best suited for their innovative product development. Understanding the nuances of PVP K30 vs. PVP K90 allows for more precise formulation, leading to superior product performance. Whether you require the balanced properties of K30 or the robust hold of K90, our high-quality products are designed to meet your exacting standards.