what does polyvinylpyrrolidone do

CAS: 9003-39-8

Polyvinylpyrrolidone (NVP) is a polymer produced by the polymerization of N-vinyl-2-pyrrolidone.

White, hygroscopic powder

Odorless or slightly odorless

Soluble in water, ethanol, chloroform and most organic solvents, insoluble in ether

Non-toxic and non-irritating

Excellent solubility, biocompatibility, adsorption, film forming, chemical stability, physiological inertness, adhesion and complexation ability.

Polyvinylpyrrolidone (PVP) is a non-ionic polymer produced by the polymerization of N-vinyl pyrrolidone (NVP) under certain conditions. PVP comes in liquid and solid forms, the most common being powders, aqueous solutions, and organic solutions. First invented by BASF in 1938, PVP was used as a substitute for human plasma during World War II because of its physiologically similar high polymer to human plasma proteins. PVP has the advantages of excellent solubility,chemical stability, low toxicity, film forming, etc., as an auxiliary, additive, excipient application demand is high, is a widely used fine chemical products, in medicine, textile, chemical, beverage, daily chemical and other fields have been applied.

Applications of polyvinylpyrrolidone:

Industrial grade

Pigments and coatings industry

Textile printing and dyeing industry

Paper industry

New energy industry

Separation membrane.

Daily chemical grade

Stabilizing effect on dispersion system such as lotion and suspension. Moisturizing and film forming effect in skin care products.

Pigment dispersion stabilizer, deodorant, deodorant, toothpaste, shaving cream and other detergents.

Food grade

It can be used as clarifier and stabilizer in beer production, and can be solved by adsorption filtration, precipitation separation and protease decomposition.

PVP /PVPP used for brewing is generally insoluble.

Pharmaceutical grade

Binder, excipient, coating agent, disintegrating agent, co-solvent, germicidal disinfectant, solubilizer, sustained-release agent, capsule shell, dispersion stabilizer,film forming agent, etc.

The percentage of PVP added is low.

CAS: 9003-39-8

Polyvinylpyrrolidone (NVP) is a polymer produced by the polymerization of N-vinyl-2-pyrrolidone.

White, hygroscopic powder

Odorless or slightly odorless

Soluble in water, ethanol, chloroform and most organic solvents, insoluble in ether

Non-toxic and non-irritating

Excellent solubility, biocompatibility, adsorption, film forming, chemical stability, physiological inertness, adhesion and complexation ability.

Polyvinylpyrrolidone (PVP) is a non-ionic polymer produced by the polymerization of N-vinyl pyrrolidone (NVP) under certain conditions. PVP comes in liquid and solid forms, the most common being powders, aqueous solutions, and organic solutions. First invented by BASF in 1938, PVP was used as a substitute for human plasma during World War II because of its physiologically similar high polymer to human plasma proteins. PVP has the advantages of excellent solubility,chemical stability, low toxicity, film forming, etc., as an auxiliary, additive, excipient application demand is high, is a widely used fine chemical products, in medicine, textile, chemical, beverage, daily chemical and other fields have been applied.

Applications of polyvinylpyrrolidone:

Industrial grade

Pigments and coatings industry

Textile printing and dyeing industry

Paper industry

New energy industry

Separation membrane.

Daily chemical grade

Stabilizing effect on dispersion system such as lotion and suspension. Moisturizing and film forming effect in skin care products.

Pigment dispersion stabilizer, deodorant, deodorant, toothpaste, shaving cream and other detergents.

Food grade

It can be used as clarifier and stabilizer in beer production, and can be solved by adsorption filtration, precipitation separation and protease decomposition.

PVP /PVPP used for brewing is generally insoluble.

Pharmaceutical grade

Binder, excipient, coating agent, disintegrating agent, co-solvent, germicidal disinfectant, solubilizer, sustained-release agent, capsule shell, dispersion stabilizer,film forming agent, etc.

The percentage of PVP added is low.

1, PVP as a synthetic water-soluble polymer compounds, with the general properties of water-soluble polymer compounds, colloidal protection, film formation, adhesion, hygroscopic, solubilization or condensation, but its most distinctive, so people pay attention to its excellent solubility and physiological compatibility.

2, PVP has anti-fouling reprecipitation performance, can be used to prepare transparent liquid or heavy dirt detergent, adding PVP in detergent has a good anti-color effect, and can enhance the cleaning ability, washing fabric can prevent synthetic detergent on the skin stimulation, especially for synthetic fibers, this performance is more prominent than carboxymethyl cellulose (CMC) detergent.

3, PVP coated paint, coating film transparent without affecting the color, improve the gloss and dispersion of paint and pigment, improve thermal stability and improve the dispersion of ink and ink, etc.
PVP is divided into four stages according to its average molecular weight size, which is usually expressed by the K value, and different K values represent the corresponding average molecular weight range of PVP. The K value is actually an eigenvalue related to the relative viscosity of PVP aqueous solution, and the viscosity is a physical quantity related to the molecular weight of polymers, so the average molecular weight of PVP can be characterized by K value. Generally, the greater the K value, the greater the viscosity and the stronger the adhesion.

The vast majority of PVP polymerization uses AIBN as initiator, and there is no literature on using water-soluble azo initiators to initiate PVP synthesis, but some people are doing work in this area.

Since both NVP monomer and PVP are water-soluble, it is entirely possible to use water-soluble azo initiators to initiate polymerization into linear PVP polymers. Moreover, AIBN contains the group cyanogen that is harmful to human body, while most water-soluble azo initiators do not contain cyanogen, and PVP is mostly used for products that are in direct contact with human body. Therefore, water-soluble azo initiators have more advantages than AIBN.