9] using PVP as an additive in the formation of the membrane with poly(ether sulfone) (PES) in N-Methyl
pyrrolidone (NMP) as solvent showed that PVP suppresses the formation of macrovoids by reducing the possibility of delayed demixing.
Wettability of a contact lens material can be improved with the introduction of internal wetting agents, for example, embedding polyvinyl
pyrrolidone (PVP) into Etafilcon A as with Johnson & Johnson's 1-Day Acuvue Moist lens.
Four hundred mg of various MW of PEG (MW: 1,000, 4,000, 6,000, 20,000), polyvinyl
pyrrolidone (PVP, MW: 10,000) or insoluble polyvinyl polypyrrolidone (PVPP) were also added into the syringes.
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.
While a polymer binder such as polyvinyl difluoride is employed using the highly toxic solvent N-methyl
pyrrolidone, Davidson foresees the use of water-based binders based on cellulose.
Such systems include polyvinyl
pyrrolidone homopolymers and polyvinyl
pyrrolidone-vinyl acetate copolymers, HPMC and HPMC derivatives and acrylate copolymers.
Poly vinyl
pyrrolidone (PVP) (Mw of 1300 KD) was procured from ISP Technologies Inc.
The microneedle arrays were made from a polymer material, poly-vinyl
pyrrolidone, that has been shown to be safe for use in the body.
Discovery of 4-substituted
pyrrolidone butanamides as new agents with significant antiepileptic activity.
2 to 2% [beta]- Mercaptoethanol before use v/v); Polyvinyl
pyrrolidone (MW 40000); Washing Solution I (0.
It is also used to produce other industrial chemicals, including butanediol, tetrahydrofuran, and
pyrrolidone, which become ingredients in solvents, paints, deicers, plastics, fuel additives, fabrics, and carpets.
It stands up equally as well in alkaline solutions and in solvents, such as methyl ethyl ketone, N-methyl
pyrrolidone, toluene and others.
