Resin polyvinylpyrrolidone

Blecher, L., Lorenz, D.H., Lowd, H.L., Wood, A.S. Wyman, D.P., 1980. R.L. Davidson (ed.), Handbook of Water Soluble Gums and Resins, Chapter 21, Polyvinylpyrrolidone, McGraw-Hill, New York. 

It is used in the manufacture of polyvinylpyrrolidone (PVP), in the manufacture of copolymers with, for example, aciv lic acid, acrylates, vinyl acetate and acrylonitrile and in the synthesis of phenolic resins. About 10-15% of the monomer is used in the pharmaceutical industry for the production of PVP-iodine complex used as a disinfectant. It is also used as a reactive solvent of ultraviolet-curable resins for the production of printing inks and paints as paper and textile auxiliaries, and as an additive in the cosmetics industry (Harreus, 1993). 

Different resins have been used to clean up or prefractionate anthocyanins prior to isolation or characterization, including ion-ex-change resins, polyamide powders, and gel materials. Chromatography on Dowex or Amber-lite ion-exchange resins, as well as polyamide powders such as polyvinylpyrrolidone (PVP), have been used to isolate polar nonphenolic compounds from crude anthocyanin extracts. Column chromatography on Sephadex LH-20 can be used for fractionation of crude extracts and is also particularly useful for purification... 

Besides solid-phase extraction, column chromatography is also often used for cleanup and purification of polyphenolics from plant material. Ionic adsorbants (polyvinylpyrrolidone or PVP, polyamides, and Sephadex LH-20) and Amberlite XAD-2 resin have been used to isolate and purify polyphenolics from crude extracts. For the separation of polyphenolics from plant material, column chromatography using Sephadex LH-20, a gel-filtration matrix, is often used with various eluting solvents (Park and Lee, 1996). The most widely used solvents for column chromatography are aqueous methanol and aqueous ethanol. 

The coating consists of polyvinylpyrrolidone or cellulosic derivatives deposited by dipping the polymeric substrate into the diluted polymer solution (Scheme 12.2). Since most of the usual polymeric substrates (acrylic resin, polyethylene, etc.) are hydrophobic, they must be pretreated before the coating process. The polymeric substrate surface have to be more polar than the aqueous solutions. Increasing their surface energy impHes the formation of a uniform coating. As... 

In addition to unidirectional panels, four sets of [0/90]7s laminates were prepared using resin film infusion (RFI) molding. In spite of a statistically indistinguishable difference in notched quasistatic compression strength (Fig. 11.5), substantial differences in the fatigue limit were noted between the polyhydroxyether sized material, the polyvinylpyrrolidone sized material and the unsized materials. 

Synonyms Butylated polyvinylpyrrolidone DeMbn Polymer of butylated vinylpyrrolidone Uses Moisture barrier, adhesive, protective colloid, film-former, and microencapsulating resin in cosmetics pigment dispersant solubilizer for dyes sludge/detergent dispersant in petroleum industry protec-... 

Butylated hydroxyanisole. See BHA Butylated hydroxymethyl phenol. See4-Hydroxy methyl -2,6-d i-t-butyl phenol Butylated hydroxytoluene. See BHT Butylated melamine-formaldehyde resin. See Melamine-formaldehyde resin, butylated Butylated phenol-formaldehyde resin. See Butylphenol formaldehyde Butylated polyoxymethylene urea (INCI). See Urea-formaldehyde resin, butylated Butylated polyvinylpyrrolidone. See Butylated PVP... 

Blecher L, Lorenz DH, Lowd HE, Wood AS, Wyman DP. Polyvinylpyrrolidone. In Davidson RL, ed. Handbook of Water-Soluble Gums and Resins. New York McGraw-Hill, 1980 Chapter 21, 1-21. 

The analysis of alkali and alkaline-earth metals in wine, which is usually diluted only with deionized water and filtrated prior to injection, is relatively easy. An example is shown in Figure 10.224. If low analyte concentrations do not allow sample dilution, a pretreatment with a polyvinylpyrrolidone resin (OnGuard-P) is recommended to remove dyes, polyphenols, anthocyanines, and other molecular organic compounds that could block the ion-exchange sites of the separator column. 

This book is a useful guide for the industrial, and academic chemist as well as students studying polymer chemistry which involve ureas, melamines, benzoguanamine/aldehyde resins (amino resins-aminoplasts), phenol/aldehyde condensates, epoxy resins, silicone resins, alkyd resins, polyacetals/polyvinyl acetals, polyvinyl ethers, polyvinylpyrrolidones, polyacrylic acids and polyvinyl chloride. 

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