PVPK30 PVPK90 Polyvinylpyrrolidone PVP

PVP Performance

Product Name: Polyvinylpyrrolidone, also known as PVP, can be categorized into commonly used types such as PVP K30 and PVP K90 based on molecular weight.

Physical Properties: Commercial PVP is a white, creamy, or slightly yellowish solid powder, and is also available as a 30% liquid.

PVP Solubility: Due to the presence of both hydrophilic and lipophilic groups in the PVP molecule, it exhibits affinity with many solvent molecules, making it soluble in water as well as in various alcohols, carboxylic acids, and amine solvents.

PVP Film-Forming, Moisture Absorption, and Compatibility: A very important property of PVP is its film-forming ability; it can be cast or coated into films when dissolved in certain solvents. PVP also has strong moisture absorption and water retention capabilities.

PVP Surface Activity: It has the ability to widely regulate the rheological properties of dispersions or solutions.

Main Applications:

I. Applications in Medicine and Health

Utilizing PVP's good solubility, solubilizing properties, physiological compatibility, and binding ability, it can be used as a binder, excipient, coating agent, solubilizer, and film-forming agent. PVP K30 (Povidone K30) is primarily used as a binder for pharmaceutical tablets and granules, with dosage ranging from 0.5% to 5%, depending on the mechanical strength requirements of the tablets and the properties of the drug itself.

II. Applications in Daily Chemicals

Leveraging PVP's (PVP K30/PVP K90) excellent surface activity, film-forming properties, and non-irritating, non-allergenic characteristics for the skin, it is widely used in daily chemicals, especially in cosmetics, skincare products, hair care products, and cleaning supplies. PVP primarily stabilizes dispersions such as emulsions and suspensions, and provides moisturizing and film-forming effects in skincare products. Its functions in daily chemical products mainly include: 1. Dispersion stabilization, 2. Detergent and cleaning functions, 3. Film-forming and moisturizing functions, 4. Sterilization and disinfection functions.

III.Applications in Office Supplies

1.PVP in Inks

PVP used in inks ensures that written or printed characters adhere firmly to paper without easy detachment or fading. Additionally, PVP provides excellent dispersion stability for inorganic and organic pigment dispersions, resulting in a uniform dispersion system in inks that prevents sedimentation, clogging of pens and nozzles, and ensures consistent color depth.

2.PVP in Paper

In the paper industry, PVP is used to improve paper strength, solubilize dyes, and disperse pigments. It serves as an important additive in wastepaper deinking, rag decomposition, and pulp coloring. When used as a coating, it enhances paper gloss, printability, and grease resistance.

IV.Applications in the Printing and Dyeing Industry

PVP K30 has a strong affinity with common organic dyes, sometimes even surpassing the binding force between dyes and fibers, earning PVP the nickname "liquid fiber." This property can enhance the affinity between hydrophobic fibers and dyes, thereby improving the dyeability of such fibers. It also enhances moisture absorption and sun protection properties, significantly improving the quality and grade of synthetic fibers. PVP's varying binding capacities with different dyes allow it to be used as a local anti-dyeing agent, producing printed fabrics with clear patterns and sharp outlines. A cleaning agent for the printing and dyeing industry, primarily composed of PVP and sodium aluminosilicate, demonstrates significantly higher cleaning power than PVP-free cleaners and prevents color transfer or staining of white backgrounds during cleaning.

V.Other Applications

Coating seeds with PVP solution can reduce damage during soaking and provide significant biological protection.

PVP exhibits good adhesion to glass, plastic, and metal, making it a key component in special-purpose hot melt adhesives.

PVP has adhesive properties for textile fibers.

Packaging: 25 kg/drum

Storage: Protect from light, keep sealed