Pharmaceutical Raw Materials

Product Name: Polyvinylpyrrolidone

Synonym:

Polyvinyl pyrrolidone; Povidone; PVP;

Molecular Structure:

Specifications:

Packing: 25KG/Drum;

Function:

Polyvinylpyrrolidone, referred to as PVP, is a non-ionic polymer compound, the most characteristic, most researched and most widely studied fine chemical among N-vinylamide polymers. It has developed into three categories of non-ionic, cationic and anionic, three specifications of industrial grade, pharmaceutical grade and food grade, and a series of homopolymer, copolymer and cross-linked polymer products with relative molecular weight ranging from thousands to more than one million , and has been widely used for its excellent and unique properties.

Very soluble in water and halogenated hydrocarbon solvents, alcohols, amines, nitroalkanes and low molecular fatty acids, etc., insoluble in acetone, ether, turpentine, aliphatic hydrocarbons and alicyclic hydrocarbons and a few solvents. Compatible with most inorganic acid salts and various resins.

Application:

1. Medicine and hygiene

PVP has excellent physiological inertia, does not participate in human metabolism, and has excellent biocompatibility, and does not cause any irritation to skin, mucous membranes, eyes, etc. It can be used as a binder for tablets and granules, a solubilizer for injections, and a glidant for capsules; a detoxifier for eye drops, a protractor, a lubricant and a coating film-forming agent, a dispersant for liquid preparations, and an enzyme. Stabilizer for heat-sensitive drugs, and can also be used as a low-temperature preservation agent. Used in contact lenses to increase their hydrophilicity and lubricity.

2. Food processing

It is mainly used as food clarifier and stabilizer for beer, fruit juice, wine and so on. PVP can form complexes with specific polyphenolic compounds (such as tannins), so that it can clarify and prevent coagulation in fruit juice drinks.

3. Daily cosmetics

PVP and copolymers have good dispersibility and film-forming properties. PVP has the function of protective colloid in emulsion, and can be used in fatty and non-fatty pastes. Opacifying agent of hair preparation, foam stabilizer of shampoo, wave setting agent and dispersant and affinity agent in hair dye. Adding PVP to creams, sunscreens, and depilatory agents can enhance the moisturizing and lubricating effects.

4. Detergent

PVP has anti-dirt re-deposition properties, and can be used to prepare transparent liquid or heavy-duty detergents. Adding PVP to detergents has a good effect of preventing discoloration, and can enhance the cleaning ability. When washing fabrics, it can prevent synthetic detergents from damaging Skin irritation, especially to synthetic fibres. PVP can be compounded with borax as an active ingredient in the formulation of phenol-containing disinfectant cleaners. In the detergent compounded with PVP and hydrogen peroxide solid, it has the functions of bleaching and killing germs.

5. Textile printing and dyeing

PVP has a good affinity with many organic dyes, and it can be combined with hydrophobic synthetic fibers such as polyacrylonitrile, ester, nylon and fibrous materials to improve dyeing power and hydrophilicity.

6. Coatings and pigments

Paints and coatings coated with PVP can form a transparent film without affecting the original color, improve the gloss and dispersion of coatings and pigments, improve thermal stability and improve the dispersion of inks and inks, etc.

7. Polymer surfactant

As a polymer surfactant, polyvinylpyrrolidone can be used as a dispersant, emulsifier, thickener, leveling agent, particle size regulator, anti-redeposition agent, coagulant, co-solvent and washing agent in different dispersion systems agent.

8. Other aspects

PVP can be used as a gelling agent for tertiary oil recovery to increase oil recovery in oil fields. As an auxiliary agent for photosensitive materials, it helps to reduce latex and enhance the coverage of developed images. It is used as a thickener, dispersion stabilizer and bonding regulator in the polymer polymerization process. It is used as a dispersant in the paper industry and as a cocatalyst in the gasification of allylamine. The application of PVP in the fields of separation film, photocurable resin, laser disc, drag-reducing coating, building materials, steelmaking and electroplating is also on the rise.

Storage:

Stored in a dry, dark environment, the shelf life is 2 years.