Vinly/vinylic

Abbreviations aapy, 2-acetamidopyridine Aik, alkyl AN, acetoniuile Ar, aryl Bu, butyl cod, 1,5-cyclooctadiene COE, cyclooctene COT, cyclooctatetraene Cp, cyclopentadienyl Cp , penta-methylcyclopentadienyl Cy, cyclohexyl DME, 1,2-dimethoxyethane DME, dimethylformamide DMSO, dimethyl sulfoxide dmpe, dimethylphosphinoethane dppe, diphenylphosphinoethane dppm, diphenylphosphinomethane dppp, diphenylphosphinopropane Et, ethyl Ec, feirocenyl ind, inda-zolyl Me, methyl Mes, mesitylene nb, norbomene orbicyclo[2.2.1]heptene nbd, 2,5-norbomadiene OTf, uiflate Ph, phenyl PPN, bis(triphenylphosphoranylidene)ammonium Pi , propyl py, pyridine pz, pyrazolate pz, substituted pyi azolate pz , 3,5-dimethylpyrazolate quin, quinolin-8-olate solv, solvent tfb, teti afluorobenzobaiTelene THE, tetrahydrofuran THT, tetrahydrothiophene tmeda, teti amethylethylenediamine Tol, tolyl Tp, HB(C3H3N2)3 Tp , HB(3,5-Me2C3HN2)3 Tp, substituted hydrotiis(pyrazol-l-yl)borate Ts, tosyl tz, 1,2,4-triazolate Vin, vinyl. 

An interesting class ot covalent Inflates are vin l and ar>/ or heteroaryl Inflates Vinyl inflates are used for the direct solvolytic generation of vinyl cations and for the generation of unsaturated carbenes via the a-elimination process [66] A triflate ester of 2-hydroxypyridine can be used as a catalyst for the acylation of aromatic compounds with carboxylic acids [109] (equation 55)... 

VINYLATION OF ENOLATES WITH A VINYL CATION EQUIVALENT trans-3-PETHYL-2-VIN YLCYCLOHE XANONE... 

Table 1.1 shows one substituent effect that influences the stability of radicals. The dissociation enthalpies of reactions that lead to R—CH2 radicals are listed. The substituent R varies from C2H5 through H2C=CH—(vinyl substituent, vin) to C6H5— (phenyl substituent, Ph). The dissociation enthalpy is greatest for R = H. It can also be seen that a radical center is stabilized by 12 1 kcal/mol by the neighboring C=C double bond of an alkenyl or aryl sub-... 

Vin Tec GmbH/Degassa A197AG Polyvinyl chloride Vinyl chloride monomer Up to 200 m3 reactor technology yields suspension, hijji-impact and emulsion PVC 10 1992... 

Vin Tec GmbH/Krupp Uhde Polyvinyl chloride (emulsion) Vinyl chloride monomer Batch process uses 2 or more reactors special coating/buildup suppressant allows many batch operations before cleaning NA NA... 

Vin silanes follow a similar course on oxidation with peroxy acid or with ozone. - Depending upon the conditions of oxidation they can be converted either to a carbonyl compound (2) or to the a-hydroxy-caibonyl compound (3), as in Scheme Vinyl silanes are useful synthetic intermediates, and this oxidation rearrangement procedure is an important component in their spectrum of reactivity. 

H H / C=C / H Cl Vinyl chloride Poly(vin / H h 1 1 -C-C— II H ClA yl chloride) orPVC vinyl seats in automobiles, vinyl siding for houses, rigid pipes, food wrap, vegetable oil bottles, blister packaging, rain coats, shower curtains, and flooring... 

DIETH L 2-(CYCLOHEXYLAMINO)VIN LPHOSPHONATE (Phosphonic acid, [2-(cyclohexy]amino)vinyl]-diethyl ester)... 

VIN AMAR (109-92-2) see vinyl ethyl ether. VINESTHENE or VINESTHESIN or VINETHEN or VINETHENE or VINETHER (109-93-3) see divinyl ether. VINEGAR ACID (64-19-7) see acetic acid. VINEGAR NAPHTHA (141-78-6) see ethyl acetate. 

Poly (vinyl acetal) Purple edge Acetic acid Does not drip like poly (vinly butyral)... 

The enhanced flow of current under the influence of an apphed electric field that occurs when a semiconductor is exposed to visible light or other electromagnetic radiation is known as photoconduction. Poly (N-vinyl carbazole) (VII) and various other vinyl derivatives of polynuclear aromatic compounds such as poly(2-vinyl carbazole) (Vin) and poly(vinyl pyrene) (DC) have high photo-conductive efficiencies. The excellent photoconductivities of these polymers are believed to be due to their helical condormation with successive aromatic side chins lying parallel to each other in a stack along which electron transfer takes place relatively easily. 

Polymerization behaviour of ethyl vinyl ether and isobutyl vinyl ether on H-mordenite and H-faujasite (H-Y) reveals certain distinctive features in comparison with that of n-butyl vin>d ether on these catalysts. 

Isotiierms for water uptake by pure H-moidenite and H-mordenite-polymer-conqiosites with 20.7 and 9.7 wt.% of x>ly ethyl vin>d ether and pWater uptake in the pol3mm is expected to be small and so the uptake of water within the mordenite crystals is little affected by the polymer. This implies that the amount of pol3mner formed and retained within the mordenite crystals must be small, especially for poly isobutyl vinyl ether. 

With H-Y faujasite, the water uptake behaviour presents very distincitive features. Sorption isotherms are shown in Fig. 8b for H-Y and H-Y-p(%nier com- )oates in which wt.% are respectively 24.3,29.3 and 27.6 with respect to oulgassed zeolite for pdy ethyl vin>4 ether, poly isobutjd vinyl ether and poly n-butyl vinyl ether. Compariscai of greatly reduced water uptakes with that in pure H-Y reveals that about 62,64 and 69% of the intracr3rstalline pore volume of H-Y is inaccessible to water for the three con c tes in the order given above. 

Poly(vinyl chloride), head-to-head Poly( vin ylfeiTOcene)... 

Vinyl acetate homopolymer. See Polyvinyl acetate Vinyl acetate, inhibited Vinyl acetate monomer. See Vinyl acetate Vin acetate polymer Vinyl acetate resin. See Polyvinyl acetate Vin acetate/rnnj chloride copolymer Vinyl acetate/vinyl chloride polymer. SeeVin chloride/vinyl acetate copolymer... 

Donescu D, Go a K, Lang uri J (1990) Semicontinuous Emulsion Polymerization of Vinyl Acetate. Vin. Copol3rmerization with Di-2-ethylhexyl Maleate. Acta Pol3rm. 41 210-214. 

Spange, S., Meyer, T., Voigt, L, Eschner, M., Estel, K., Pleul, D. and Simon, F.-. Poly(Vinyl-formamide-co-Vin)damine)/Inorganic Oxid Hybrid Materials. Vol. 165, pp. 43-78. 

MC Lai, MJ Hageman, RL Schowen, RT Borchardt, EM Topp. Chemical stability of peptides in pol5miers. 1. Effect of water on peptide deamidation in poly(vinly alcohol) and poly(vinyl pyrrolidone) matrixes. J Pharm Sci... 

Poly(vinyl chloride). Cellular poly( vinyl chloride) is prepared by many methods (105), some of which utilize decompression processes. Unlike the typical process used for thermoplastic resins where the melt is heated to a temperature considerably above its second-order transition temperature so the resin can flow, poly(vinyl chloride) requires the assistance of a plasticizer to fuse into a plastisol resin. This process is used because the poly(vinly chloride) resin is susceptible to thermal degradation. 

Somewhat arbitrarily, those cases that can be considered to involve /3-elimination, that is, vinyl, aryl, alkynyl, allyl, benzyl, and propargyl o--bond assisted C—activation, are discussed in Sect. Vin.33, and the others are discussed in Sect. Vni.4. 

F.VA (Ethvlene-Vin vl Acetate (7opolviiicr> CopGlymeis of major amounts of ethylene with minor amounts of vinyl acetate, that retain many of the properties of polyethylene but have considerably increased flexibility, elongation and impact resistance. EVA is used as an adhesive for bonding base cups to PET beverage botties and labels to bottles. EVA is a form of LDPE... 

Gaze and Loucheux, ° using the vinyl acetate-MA pair, have also attempted to look at the influence of a CTC between comonomers on the microstructure of the products. Nuclear magnetic resonance spectra showed no differences in configuration between two MA-vinly acetate copolymers prepared in such a manner that a CTC would form in one system but not the other. Thermogravimetric studies did show some dilference, postulated to result from differences in the conformation of the ester group. Attempts were made to explain the differences by discussing a mechanism for the participation of the CTC formation in the copolymerization. 

Copolymers of styrene-, olefins-, vin d acetate-, and alkyl vinyl ether-MA were introduced commercially to fill the need for resins of low viscosity, water solubility, and high functionality. The aforesaid properties and other copolymer characteristics made for a wide range of possible uses for these materials. In this review on uses, we make no attempt to completely separate out the current uses from past and potential applications. 

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