polyvinyl pyrrolidone

polyvinyl pyrrolidone

[¦päl·i′vīn·əl pə′räl·ə‚dōn]
(organic chemistry)
(C6H9NO)x A water-soluble, white, resinous solid; used in pharmaceuticals, cosmetics, detergents, and foods, and as a synthetic blood plasma. Abbreviated PVP.
References in periodicals archive ?
Polyvinyl pyrrolidone (PVP) was obtained from Bio Basic, Canada.
He said that Advanced Polymer Technology (APT) is a newly designed process for (semi-) continuous pretreatment using a polyvinyl pyrrolidone polymer in de-sizing, bio-scouring and bleaching of cotton and its blends with synthetic fibers.
Polymers that are neutral (e.g., non-ionizable across the GI pH range) and hydrophilic (high water solubility) such as polyvinyl pyrrolidone (PVP) and hydroxypropyl methylcellulose (HPMC) are useful for maximizing dissolution rate across the pH range of the GI tract, particularly for highly lipophilic, weakly basic compounds in the low pH environment of the stomach.
Polyvinyl pyrrolidone (PVP) has chosen because it has excellent characteristics such as optical, mechanical and electrical properties.
It is billed as an economical alternative to PVP (polyvinyl pyrrolidone) or PVOH (polyvinyl alcohol) in both hairsprays and high clarity hair gels.
Revaprasadu, "An improved N, N-dimethylformamide and polyvinyl pyrrolidone approach for the synthesis of long silver nanowires," Journal of Alloys and Compounds, vol.
Cheng Uei Precision Industry Company has obtained a patent for a nanocomposite coating comprised of a nanometer inorganic oxide gel made by a sol-gel method and having 22.5%-49.5% weight in the nanocomposite coating; an organic solvent having 45%-74.25% weight in the nanocomposite coating; and a nanometer powder having 1%-10% weight in the nanocomposite coating; wherein the nanocomposite coating is formed by mixing the nanometer inorganic oxide gel, the organic solvent and the nanometer powder together; wherein the nanometer powder is processed by a surfactant before being mixed with the nanometer inorganic oxide gel and the organic solvent to form the nanocomposite coating; wherein the surfactant is any one of or a mixture of a sodium dodecylsulphonate and a polyvinyl pyrrolidone.
Plastic skin patches that deliver vaccines--Micro-needle patches made from polyvinyl pyrrolidone are being developed that can be mixed with vaccines (including the flu vaccine) and then painlessly applied to skin.
Several polymeric materials with different molecular weights such as polyethylene glycol (PEG), polyvinyl alcohol (PVA), polyvinyl pyrrolidone (PVP), polyurethanes (PU), and others, mainly water soluble, have been used as coatings of silver nanoparticles to enable particle dispersion [33].
Such systems include polyvinyl pyrrolidone homopolymers and polyvinyl pyrrolidone-vinyl acetate copolymers, HPMC and HPMC derivatives and acrylate copolymers.
As an example, the wetting agent polyvinyl pyrrolidone (PVP) is embedded within the Narafilcon A (Trueye, Johnson & Johnson) lens material to reduce the hydrophobicity.