Polyvinylpyrrolidone Pvp K30

PVP-K30 is a non-ionic polymer compound, which is a well-studied and extensive fine chemical species among N-vinylamide polymers. Among them, the K value is actually a characteristic related to the relative viscosity of the PVP aqueous solution. value.
PVP is divided into four grades according to its average molecular weight, which is usually represented by K value, and different K values represent the corresponding average molecular weight range of PVP. The K value is actually a characteristic value related to the relative viscosity of the PVP aqueous solution, and the viscosity is a physical quantity related to the molecular weight of the polymer. Therefore, the K value can be used to characterize the average molecular weight of PVP. Generally, the larger the K value, the greater the viscosity and the stronger the adhesiveness. The K value of polyvinylpyrrolidone is 30, and its appearance is white or milky white powder or granule.

1. Application in medicine and health
Utilizing the good solubility, solubilization, physiological compatibility, and bonding ability of PVP, it can be used as a binder, excipient, coating machine, solubilizer, film-forming agent, etc. The PVP used as the binder of pharmaceutical tablets and granules is mainly PVPK30 (Povidone K30), and its dosage depends on the requirements of the mechanical strength of pharmaceutical tablets and the properties of the drug itself, generally 0.5%-5%.

2. Application in daily chemical industry
Taking advantage of PVP (PVPK30/PVPK90)'s excellent surface activity, film-forming properties and no irritation to the skin, it is widely used in daily chemical industry, especially cosmetics, skin care products, cosmetics and cleaning products. PVP is mainly used for emulsion Stabilization of dispersion systems such as , suspension, etc., moisturizing and film-forming effects in skin care products. The functions of PVP in daily chemical products are mainly manifested in the following aspects: 1. Dispersion and stability function, 2. Decontamination and washing function, 3. Film-forming and moisturizing function, 4. Sterilization and disinfection function.

3. Application in office supplies
(1) Application of PVP in ink and ink
PVP is used in ink and ink to make the writing and printing firmly adhere to the paper without falling off and fading. Moreover, PVP has a good dispersion and stabilization effect on inorganic pigments and organic pigment dispersions. It can be used in inks and inks. Obtain a uniform dispersion system, not easy to precipitate, not clogging pens and various nozzles, and the obtained writing is uniform in depth.

(2) Document production
The production of certificates is realized through special magnetic ink. The addition of PVP to the ink can increase the adhesion stability of the barcode, and form a uniform barcode film on the substrate, so that the edges of the barcode are neat and firm and not easy to damage.
(3) Application of PVP in paper
In the paper industry, PVP is used to improve the strength of paper, solubilize fuel and disperse pigments. It is an important auxiliary agent in deinking of waste paper, decomposition of rags, beating and coloring. When used as a coating, it can improve the quality of paper. Excellent gloss, printability and grease resistance.
4. Application in printing and dyeing industry
PVPK30 has a strong affinity with general organic dyes, and the use of this property of PVP can increase the affinity between some hydrophobic fibers and dyes, thereby improving the dyeability of such fibers. In addition, it can also improve its hygroscopicity and sun protection performance, and greatly improve the quality and grade of synthetic fibers.
5. Other applications
The PVP solution coated on the seeds can reduce the damage during soaking and has obvious biological protection function.
PVP has good adhesion to glass, plastic and metal, and is the main component of hot melt adhesives for special purposes.