Polyvinyl Pyrrolidone (PVP)
PVP K Series
The PVP K Series encompasses a range of polyvinylpyrrolidone polymers characterized by their varying molecular weights, which directly influence their solubility, binding capacity, and film-forming abilities. Widely used in pharmaceutical formulations as binders, disintegrants, and solubilizing agents, these polymers are also key ingredients in cosmetics for their stabilizing and viscosity-enhancing properties.
Product Details
01
Overview
The Polyvinyl Pyrrolidone or PVP K Series is distinguished by its unique chemical properties, making it a polymer of choice for a wide range of applications. These polymers are soluble in water and other solvents, providing excellent binding capabilities due to their adhesive nature. The series varies in molecular weight, allowing for tailored solubility and viscosity characteristics depending on the specific needs of the formulation.
In terms of applications, the PVP K Series polymers play a pivotal role in the pharmaceutical industry, serving as binders in tablet formulations, solubilizers for poorly soluble drugs, and film formers for coating applications. Beyond pharmaceuticals, they are extensively used in cosmetics for hair styling products, as well as in skin care items, where they provide hydration and form protective films. Additionally, their stabilizing properties make them valuable in food processing and beverage clarification
02
Specifications
The K-value is calculated based on the molecular weight and the viscosity of the aqueous solution, and is categorized into the following models:
Grade | K Value | Viscosity-average Molecular Weight(Mv) | Main Applications |
K12 | 10.2 - 13.8 | 3,000 - 7,000 | As a solubilizer, dispersant, crystallization inhibitor used in liquid preparations |
K15 | 12.75 - 17.25 | 8,000 - 12,000 | |
K17 | 15.3 - 18.36 | 10,000 - 16,000 | |
K25 | 22.5 - 27.0 | 30,000 - 40,000 | As a binder, film forming agent, solubilizer, suspension stabilizer, dispersant used in solid and liquid preparations |
K30 | 27 - 32.4 | 45,000 - 58,000 | |
K60 | 54 - 64.8 | 270,000 - 400,000 | As a binder, thickener, suspension stabilizer used in preparation |
K90 | 81 - 97.2 | 1,000,000 - 1,500,000 |
Note: The K-value is derived from the kinematic viscosity of a 1% aqueous solution and the viscosity-average molecular weight is calculated according to the Mark-Houwink equation.
03
Applications
The applications of PVP K Series span across multiple industries, leveraging their chemical properties for diverse functional benefits:
Pharmaceuticals: PVP K Series polymers are integral in drug formulation, serving multiple roles. They act as binders in tablet compression, enhancing cohesion and strength. As solubilizers, they improve the solubility of active pharmaceutical ingredients (APIs) that are poorly soluble in water, increasing their bioavailability. Additionally, they function as film formers in coating processes, providing tablets with a protective layer that controls drug release rates.
Cosmetics and Personal Care: In the cosmetics industry, PVP polymers are valued for their film-forming and binding properties. They are found in hair styling products like gels and mousses, where they offer hold and flexibility. In skincare, PVP helps to stabilize emulsions and forms a breathable, protective film on the skin, enhancing moisture retention. It’s also used in toothpaste and mouthwashes as a binding agent to improve texture and efficacy.
Food and Beverages: The stabilizing properties of PVP K Series make them suitable for use in food products and beverage processing. They can act as clarifying agents in beer and wine, removing proteins that cause haze and ensuring clarity and stability of the final product. In processed foods, PVP serves as a stabilizer and thickener, improving texture and consistency.
Adhesives and Coatings: PVP polymers are used in the production of adhesives, offering excellent bonding strength and durability. They are particularly useful in water-based adhesives for paper, packaging, and wood. In coatings, PVP contributes to the formulation of non-toxic and environmentally friendly options for paints and surface coatings, providing a balance of viscosity, adhesion, and smooth finish.
Water Treatment: Due to their ability to form complexes with various substances, PVP polymers are used in water treatment processes. They help in the removal of contaminants and improve the efficiency of filtration systems, ensuring cleaner and safer water.
Printing and Dyeing: In the textile industry, PVP is used in the dyeing process as a dispersing agent, helping to evenly distribute dye within the fabric and improve color fastness. It’s also utilized in ink formulations for printing, where it enhances ink viscosity and stability, ensuring consistent print quality.
04
Package & Transport
PVP K Series products are typically packaged with a focus on preserving their quality, stability, and ease of handling. The common packaging methods include:
Powder Form:
- Sealed in multi-layer polyethylene bags or aluminum foil bags to protect from moisture and contamination.
- These bags are often placed inside rigid, corrugated cardboard boxes or drums for additional protection during transport.
- Standard packaging sizes can range from 1 kg for small-scale use to 25 kg or more for industrial applications.
Aqueous Solutions:
- Packaged in high-density polyethylene (HDPE) bottles or drums, depending on the volume.
- For larger industrial quantities, intermediate bulk containers (IBC) made of plastic or stainless steel can be used.
- The containers are sealed and labeled with handling and safety instructions.
05
Inquiry & Sample Request
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