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.