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Topic: Poly vinyl pyrrolidone

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	Poly vinyl pyrrolidone: Definition and Links by Encyclopedian.com
		However its polymer PVP in its pure form is so safe that not only is it edible for humans, it is used as a blood plasma expander for trauma victims.
		PVP is soluble in water and other polar solvents.
		PVP is also used in personal care products, such as shampoos and toothpastes, in paints, and adhesives that you have to moisten, such as old-style postage stamps and envelopes.
	www.encyclopedian.com /pv/PVP---Poly-Vinyl-Pyrrolidone.html (477 words)

	Poly vinyl pyrrolidone - Wikipedia, the free encyclopedia
		PVP (polyvinyl pyrrolidone, povidone, polyvidone) is a water-soluble polymer made from the monomer N-vinyl pyrrolidone:
		PVP binds to polar molecules exceptionally well, owing to its polarity.
		A cross-linked form of PVP is also used as a disintegrant in pharmaceutical tablets.
	en.wikipedia.org /wiki/Poly_vinyl_pyrrolidone (420 words)

	Alkaline-MnO.sub.2 cell having a zinc powder-gel anode containing P-N-V-P or PMA - United States Patent 4,175,052
		The powder-gel anode of claim 5 wherein the poly-N-vinyl pyrrolidone is about 1 percent and the carboxymethyl cellulose is about 1.5 percent based on the weight of the anode.
		The powder-gel anode of claim 20 wherein the polymethacrylic acid and poly-N-vinyl pyrrolidone are present in an amount between about 1 and about 4.5 percent based on the weight of the anode and the carboxymethyl cellulose is present in an amount between about 0.5 and about 2.5 percent based on the weight of the anode.
		It is another object of the present invention to employ poly-N-vinyl pyrrolidone and/or polymethacrylic acid as a gelling agent and lubricating agent for powder-gel anodes.
	xrint.com /patents/us/by10/4175052 (2290 words)

	POLY (VINYL PYRROLIDONE) STABILIZED POLYMERIZED EPOXY COMPOSITIONS AND PROCESS FOR IRRADIATING SAME - United States ...
		Accordingly, new and improved stabilized polymerizable compositions comprising epoxides and mixtures of epoxides with monomers selected from the group consisting of lactones and vinyl-coating compounds are provided containing radiation-sensitive catalyst precursors and also a specific class of gelation inhibitors which, upon admixture with the polymerizable materials, inhibit gelation of the reaction composition prior to irradiation.
		This is accomplished by the inclusion of a small quantity of a substituted poly(vinyl pyrrolidone) wherein the carbon atom adjacent to the carbonyl group contains an alkyl or aryl substituent as gelation inhibitors.
		In accordance with the present invention, substituted poly (vinyl pyrrolidones) wherein the carbon atom adjacent to the carbonyl group contains an alkyl or aryl substituent are used in stabilizing amounts as gelation inhibitors.
	xrint.com /patents/us/3816281 (4947 words)

	AnB block copolymers containing poly (vinyl pyrrolidone) units, medical devices, and methods - Patent 6756449
		The medical device of claim 24 wherein the secondary polymer is a poly(vinyl pyrrolidone), a polyurethane, a polyurea, a poly(urethane-urea), a polyamide, a poly(amide-ether), a polyimide, copolymers or mixtures thereof.
		The method of claim 45 wherein the secondary polymer is a poly(vinyl pyrrolidone), a polyurethane, a polyurea, a poly(urethane-urea), a polyamide, a poly(amide-ether), a polyimide, copolymers or mixtures thereof.
		PVP is particularly desirable because PVP homopolymers of at least about 400,000 g/mol (weight average molecular weight) are generally lubricious and biocompatible.
	www.freepatentsonline.com /6756449.html (13993 words)

	Patent ID: 5276079 - Pressure-sensitive poly(n-vinyl lactam) adhesive composition and method for producing and using ...
		Then 8.5 grams of solid, crosslinked PVP prepared according to the method of Example 13 (K-90 from BASF, crosslinked with 150 kGys of gamma radiation) was added and the resultant composition was mixed in a blender until it was homogeneous.
		Radiation-crosslinked PVP powders prepared according to Examples 19-30 were formulated into the following adhesive composition of 4.0 grams of solid, radiation-crosslinked PVP; 0.25 grams of ethyl acetate used to reduce agglomeration of the powder during mixing with water; 9.3 grams of glycerol; and 66.45 grams of deionized water.
		A composition was prepared of 4.0 grams DAM crosslinked PVP; 0.25 grams of ethyl acetate; 9.3 grams of glycerol; and 66.45 grams of deionized water.
	www.patentmonkey.com /PM/PatentID/5276079.aspx (8699 words)

	N-vinyl-2-pyrrolidone - PatentStorm (Site not responding. Last check: 2007-09-11)
		B block copolymers, wherein n is at least two, that include A blocks with poly(vinyl pyrrolidone) units and B blocks with urethane groups, urea groups, imide groups, amide groups, ether groups, ester groups, or combinations thereof, as well as medical devices and methods.
		A pharmaceutical composition of water, water soluble vinyl polymer gel, amine alcohol dispersant and IEP is used topically to treat herpes labialis and aphthous stomatitis lesions, and also to treat herpes genitalis, chicken pox, allergic conjunctivitis, giant papillary...
		A pharmaceutical composition of water, water soluble vinyl polymer gel, amine alcohol dispersant and IEP is used topically to treat herpes labialis and aphthous stomatitis lesions, and also to treat herpes genitalis chicken pox, allergic conjunctivitis, giant papillary conjunctivitis, stomatitis...
	www.patentstorm.us /class/424/78.24-N_vinyl_2_pyrrolidone.html (2883 words)

	Preparation of water soluble segmented polymers - Patent 4002589
		The poly(vinyl pyrrolidone) segments of the graft and block copolymers of the present invention are prepared from N-vinyl-2-pyrrolidone monomer preferably by polymerization in aqueous media using inorganic and organic peroxygen or peroxide compounds.
		The relative proportions or molar ratios of poly (vinyl pyrrolidone) or poly(vinyl alcohol) to total water-soluble vinyl monomer in the segmented block and graft copolymers of the present invention may vary over a considerably wide range, at least as great as 100:1 to 1:100.
		Where poly(vinyl pyrrolidone) comprises one or more of the segments, it has been found that where the poly (vinyl pyrrolidone) is of higher molecular weight, for example, 300,000 to 1,000,000 or more, that it is desirable to employ from 10 to 30 moles of cerium (IV) salt initiator per single mole of poly(vinyl pyrrolidone).
	www.freepatentsonline.com /4002589.html (2855 words)

	Product and process
		Thereafter, the resulting intimate mixture of polyamide and Poly N-vinyl-2-pyrrolidone homopolymer is blended with the isotactic polypropylene to obtain a composition of the invention.
		The poly N-vinyl-2-pyrrolidone homopolymer has a moisture regain of 106%, a S ratio of 0.17 and a number average molecular weight of 360,000.
		A copolymer of the vinyl ester of "Versatic" 10 acid and 79.9% by weight of N-vinyl-2-pyrrolidone is prepared by conventional addition polymerization using a free radical catalyst.
	www.90minuta.com /inventions/coated_golf_ball/product_process.html (5201 words)

	Light scattering and in vitro biocompatibility studies of poly (vinyl pyrrolidone) derivatives with ...
		Two poly (vinyl pyrrolidone) (PVP) families with amino-acid residues (glycine, beta-alanine, gamma-aminobutiric acid and epsilon-aminocaproic acid) on the base of the co-polymer N-vinyl pyrrolidone and allyl-glycidyl ether (VP-AGE) and on the base of epoxidized PVP (EPVP) were synthesized.
		Poly(vinyl pyrrolidone) (PVP) has been extensively used in the solution-phase synthesis of many types of colloidal particles, where it is mainly considered as a steric stabilizer or capping agent with a major role to protect the product from agglomeration.
		The complexation of PVP and the Gantrez copolymer in the composite films was a critical factor affecting the release of DS from the films and the bioadhesive properties of the films.
	lib.bioinfo.pl /pmid:12418031 (1476 words)

	A.sub.nB block copolymers containing poly (vinyl pyrrolidone) units, medical devices, and methods - Patent 7064168
		A.sub.nB block copolymers, wherein n is at least two, that include A blocks with poly(vinyl pyrrolidone) units and B blocks with urethane groups, urea groups, imide groups, amide groups, ether groups, ester groups, or combinations thereof, as well as medical devices and methods.
		In one embodiment, the present invention provides a thermoplastic A.sub.nB block copolymer, wherein the A blocks include poly(vinyl pyrrolidone) units and the B block is a long-chain organic connecting unit that includes urethane groups, urea groups, imide groups, amide groups, ether groups, or combinations thereof, wherein n is at least two.
		One such device includes a surface that includes a thermoplastic A.sub.nB block copolymer, wherein the A block includes poly(vinyl pyrrolidone) units and the B block is a long-chain organic connecting unit that includes urethane groups, urea groups, imide groups, amide groups, ester groups, ether groups, or combinations thereof, wherein n is at least two.
	www.freepatentsonline.com /7064168.html?highlight=5160790 (12695 words)

	pyrrolidone Resources
		PVP (polyvinyl pyrrolidone, povidone, polyvidone) is made from the monomer n-vinyl pyrrolidone: The monomer is carcinogenic...
		Thermal stability of pyrrolidone carboxyl peptidases from the...
		Thermal stability of pyrrolidone carboxyl peptidases from the hyperthermophilic Archaeon, Pyrococcus furiosus Kyoko Ogasahara1...
	www.techrectory.com /Vibration/pyrrolidone.html (232 words)

	Non-stringy adhesive hydrophilic gels (US5143071) (Site not responding. Last check: 2007-09-11)
		Suitable mixtures may be derived from poly(ethylene oxide) and water or poly(vinyl pyrrolidone), a viscosity-enhancing hydrophilic polymer and water, and further, may optionally contain an effective amount of a water-soluble electrolyte to provide conductive non-stringy materials.
		The present invention provides, in particular, extrudable viscous aqueous mixtures comprising poly(vinyl pyrrolidone), a viscosity-enhancing hydrophilic polymer, and an electrolyte which may be crosslinked by exposure to a sufficient amount of radiant energy to form the materials of particular interest.
		The unique hydrogel of the present invention is produced by an irradiation crosslinking process in which the aqueous mixture of PVP, viscosity-enhancer, and water-soluble electrolyte is exposed to a dose of radiant energy effective to crosslink the macromolecules which are present to a degree which provides a tacky adhesive yet non-stringy hydrophilic gel.
	www.delphion.com /details?pn10=US05143071 (3629 words)

	MVS Solutions - Bioerodible polymeric semi-interpenetrating network alloys and internal fixation devices made therefrom
		In a preferred embodiment, the second bioerodible polymer comprises polypropylene fumarate (PPF), which is cross-linked during curing, desirably by a vinyl monomer such as vinyl pyrrolidone (VP) to form the biopolymeric scaffolding which provides the cured cement with dimensional and geometric stability.
		2 is a graph of distribution of vinyl pyrrolidone between crosslinked poly(propylene fumarate) and poly(vinyl pyrolidone).
		In a preferred embodiment the second bioerodible polymer is PPF, which is crosslinked via polymerization between PPF and a vinyl monomer such as vinyl pyrrolidone or methyl methacrylate.
	www.mvssolutions.com /CSI-6153664.html (6285 words)

	Poly(vinyl alcohol) and poly(vinyl pyrrolidone) blended films for local nitric oxide release.
		It was found that these spheres were developed from the gradual aggregation of small nanoparticles and size of the spheres could be tailored by adjusting the reagent concentrations.
		The formation of cubic nanocages with pores at all the corners was determined by the capping agent, poly(vinyl pyrrolidone) (PVP), which preferentially covered the {100} facets of a truncated Ag nanocube.
		PVA coated and fluorescent dye (Cy3.5) functionalized vinyl alcohol/vinyl amine copolymer coated superparamagnetic iron oxide nanoparticles (SPION) were evaluated for systemic distribution and elimination after intraarticular injection in sheep.
	lib.bioinfo.pl /auid:3234374 (1640 words)

	Title page for ETD etd-73197-10251
		Mechanical properties of (woven carbon fiber / vinyl ester matrix) composites can be greatly improved if the interphase between the reinforcing high-strength low-weight fiber and the thermoset resin is made more compliant.
		In order to improve the adhesion of the vinyl ester matrix to the carbon fiber, a thermoplastic coating such as poly(vinyl pyrrolidone) (PVP) can be used as an intermediate between the matrix and the fiber.
		Because the glass transition temperature of the PVP changed as diffusion proceeded, one would expect that the mutual diffusion coefficient did not stay constant.
	scholar.lib.vt.edu /theses/available/etd-73197-10251 (347 words)

	antifadent fluorescence immersion oil fluorophore AF1 AF2 AF3 AF87 AF100 CFPVOH PVP tris MWL 4-88 photobleaching ...
		If bleaching of your fluorescent label is a problem use the poly(vinyl pyrrolidone) solution containing antifadent.
		Aqueous poly(vinyl pyrrolidone) is very useful as a permanent mountant which possesses some antifadent properties.
		Aqueous poly(vinyl pyrrolidone) plus antifadent is very useful as a permanent mountant which possesses antifadent properties.
	www.citifluor.co.uk /usage.htm (2692 words)

	Doç. Dr. Tuncer ÇAYKARA (Site not responding. Last check: 2007-09-11)
		Turan E, Çaykara, T., pH/temperature-sensitive imprinted ionic poly (N-tert-butylacrylamide-co-acrylamide/maleic acid) hydrogels for bovine serum albumin MACROMOLECULAR BIOSCIENCE Vol:5 (10), 1032 (2005)
		Swelling and adsorption properties of hydrophobic poly [(N-(3-(dimethylamino)propyl)methacrylamide)-co-(lauryl acrylate)] hydrogels in aqueous solutions of surfactants’ Macromol.
		Çaykara T., Hydroxylation of pendant vinyl groups of poly(3-hydroxy undec-10-enoate) in high yield,
	w3.gazi.edu.tr /web/caykara/yayin.php (1132 words)

	Temperature Dependence of Tannin Adsorption by Poly-N-Vinyl Pyrrolidone -- Mennett and Nakayama 21 (3): 162 -- American ...
		Temperature Dependence of Tannin Adsorption by Poly-N-Vinyl Pyrrolidone -- Mennett and Nakayama 21 (3): 162 -- American Journal of Enology and Viticulture
		Articles by Mennett, R. Articles by Nakayama, T. Temperature Dependence of Tannin Adsorption by Poly-N-Vinyl Pyrrolidone
		The rate of adsorption with tannic acid is found
	www.ajevonline.org /cgi/content/abstract/21/3/162 (153 words)

	antifadent poly vinyl alcohol CFPVOH PVP MWL 4-88 poly vinyl pyrrolidone scanning laser microscopy cfm confocal ...
		antifadent poly vinyl alcohol CFPVOH PVP MWL 4-88 poly vinyl pyrrolidone scanning laser microscopy cfm confocal microscopy multi-photon microscopy high resolution microscopy mountant solutions immersion oils Cargille Immersion oil Type DF Type FF fluorescence citifluor
		A Revolutionary New Development to help you beat the effects of Refraction
		Fax: +44 (0)20 7729 2936 Free Sample Printable Fax Form (opens in a new window; requires Adobe® Reader - most computers will already have this installed - if not get it at free download)
	www.citifluor.co.uk /newproducts.htm (214 words)

	373974 Poly 2 ethyl 2 oxazoline average M_w ~500,000 (Polydispersity 3-4)
		373974 Poly 2 ethyl 2 oxazoline average M
		Potential substitute for poly(vinyl alcohol) and poly(vinyl pyrrolidone).
		Good melt flow, shear stability and Newtonian characteristics.
	www.sigmaaldrich.com /catalog/search/ProductDetail/ALDRICH/373974 (69 words)

	Tarihçe kopyası
		“Spectrophotometric Behaviour of Poly(vinyl pyrrolidone) in Aqueous and Non- aqueous Media I.” L.Türker, F.Yigit, A.Güner and O.Güven, Colloid and Polym.Sci., 268, 337 (1990).
		“The Dependence of Enzyme Leakage on Crosslink Density in Poly(n-vinyl-2- Pyrrolidone) Hydrogels With Immobilized Urease”O.Güven and M.Sen, Angew.
		“Mechanical Properties and Water Vapor Permeation of Vinyl triethoxy silane/Methyl methacrylate Copolymer“T.Caykara, M.S.Eroglu and O. Guven Angew.
	www.polymer.hacettepe.edu.tr /Oguven/Publications.htm (3991 words)

	CiteULike: Towards an understanding of adsorption behaviour in non-aqueous systems: adsorption of poly(vinyl ... (Site not responding. Last check: 2007-09-11)
		CiteULike: Towards an understanding of adsorption behaviour in non-aqueous systems: adsorption of poly(vinyl pyrrolidone) and poly(ethylene glycol) onto silica from 2H, 3H-perfluoropentane
		Towards an understanding of adsorption behaviour in non-aqueous systems: adsorption of poly(vinyl pyrrolidone) and poly(ethylene glycol) onto silica from 2H, 3H-perfluoropentane
		Note: You or your institution must have access rights to this article.
	www.citeulike.org /article/350334 (78 words)

	Abstract View (Site not responding. Last check: 2007-09-11)
		Variable morphologies of poly(vinyl acetate) - montmorillonite nanocomposites obtained by emulsion polymerization in the presence of poly(vinyl pyrrolidone)
		COROBEA Mihai-Cosmin, URICANU Violeta, DONESCU Dan, DELADI Szabolcs, RADOVICI Constantin, SERBAN Sever, CONSTANTINESCU Elena
		Depending on the MMT/PVP ratio, the clay will be dispersed in the final polymer matrix in variable forms, from individual platelets to agglomerates of reformed tactoids
	www.e-polymers.org /abstract.cfm?abstract_id=1543 (136 words)

	IngentaConnect Interaction and Scale of Mixing in Cellulose Acetate/Poly(N-vinyl...
		Binary blends and pseudo complexes of cellulose acetate (CA) with vinyl polymers containing N-vinyl pyrrolidone (VP) units, poly(N-vinyl pyrrolidone) (PVP) and poly(N-vinyl pyrrolidone-co-vinyl acetate) [P(VP-co-VAc)], were prepared, respectively, by casting from mixed polymer solutions in N,N-dimethylformamide as good solvent and by spontaneous co-precipitation from solutions in tetrahydrofuran as comparatively poor solvent.
		It was revealed that the formation of complexes was due to a higher frequency of hydrogen-bonding interactions between the residual hydroxyl groups of CA and the carbonyl groups of VP residues in the vinyl polymer component.
		Keywords: Blend; Cellulose acetate; 13C NMR; Complex; Interaction; Poly(N-vinyl pyrrolidone); Poly(N-vinyl pyrrolidone-co-vinyl acetate)
	www.ingentaconnect.com /content/klu/cell/2005/00000012/00000003/00005836 (297 words)

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