pvp k-series
chemistry: PVP polymers and VP derivatives
INCI/chemical name: PVP
SDS Link >Polyvinylpyrrolidone is a hygroscopic, amorphous polymer supplied as a white, free-flowing powder or a clear aqueous solution. Available in several molecular weight grades, they are characterized by K-value, and used in a great variety of applications. Polyvinylpyrrolidone can be plasticized with water and most common organic plasticizers. It is considered to be physiologically inert:
- Applications take advantage of one or more properties inherent in the polymer, typically due to the lactam ring.
- High polarity and the resultant propensity to form complexes with hydrogen donors, such as phenols and carboxylic acids, as well as anionic dyes and inorganic salts.
- Dispersancy, where components in a mixture are uniformly distributed through the use of polyvinylpyrrolidone.
- Hydrophilicity, where the substantial water solubility of polyvinylpyrrolidone is its dominant feature and frequently a factor along with other properties valuable to numerous applications.
- Adhesion, taking advantage of the higher molecular weight polyvinylpyrrolidones formulating in aqueous media, then evaporating sufficient water to generate a solid product for the desired application.
- Cohesivity, where cohesive strength is achieved through a variety of dry blending and granulation techniques.
Polyvinylpyrrolidone is cross-linkable to a water insoluble, swellable material either in the course of vinylpyrrolidone polymerization, by addition of an appropriate multifunctional comonomer or by post-reaction, typically through hydrogen abstraction chemistry.
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home care features and benefits
- acts as rheology modifier
- is a highly adhesive tablet binder
- stabilizes emulsion and structures liquid products
- provides anti-soil redeposition, enzyme stabilization and dye transfer inhibition
- functions as binder and protective coating for enzymes
- provides surface shine enhancement
- forms hard, transparent, glossy films
home care applications
- dishwashing liquids
- dishwashing and laundry tablets
- laundry detergents
- hard surface cleaners
grades
| grade | k-value range | molecular weight (GPC/MALLS) |
| K-12 | 10-14 | 5,000 |
| K-15 | 13-19 | 9,700 |
| K-30 | 26-35 | 66,800 |
| K-60 | 50-62 | 396,000 |
| K-90 | 88-100 | 1,570,000 |
| K-120 | 114-130 | 3,470,000 |
