Results 281 to 290 of about 78,621 (327)

Pharmaceutical Processing with Supercritical Carbon Dioxide

Journal of Pharmaceutical Sciences, 1997
Replacement of traditional solvents with "environmentally benign" carbon dioxide is receiving increased attention in pharmaceutical processing. Among the reported applications, particle formation with dense carbon dioxide and the "clean" synthesis of drug compounds using carbon dioxide as a reaction medium hold immense potential for large-scale ...
B, Subramaniam, R A, Rajewski, K, Snavely   +2 more
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Dyeing of Cotton in Supercritical Carbon Dioxide

Dyes and Pigments, 1998
Abstract The dyeing of cellulosic fibers with disperse and natural dyes was attempted using supercritical carbon dioxide (CO2SCF) as solvent system. The dye uptake was strongly increased if cotton was pretreated with polyethylene glycol (PEG), a known plasticizing agent of cellulose, while reasonable wet-washing and light fastness properties were ...
P. Beltrame, A. Castelli, E. Selli, A. Mossa, G. Testa, A. Bonfatti, A. Seves   +6 more
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Synthesis of Fluoropolymers in Supercritical Carbon Dioxide

Science, 1992
Fluoropolymers are used in many technologically demanding applications because of their balance of high-performance properties. A significant impediment to the synthesis of variants of commercially available amorphous fluoropolymers is their general insolubility in most solvents except chlorofluorocarbons (CFCs).
J M, Desimone, Z, Guan, C S, Elsbernd
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Dispersion Polymerizations in Supercritical Carbon Dioxide

Science, 1994
Conventional heterogeneous dispersion polymerizations of unsaturated monomers are performed in either aqueous or organic dispersing media with the addition of interfacially active agents to stabilize the colloidal dispersion that forms. Successful stabilization of the polymer colloid during polymerization results in the formation of high ...
J M, Desimone, E E, Maury, Y Z, Menceloglu, J B, McClain, T J, Romack, J R, Combes   +5 more
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Olefin Metathesis in Supercritical Carbon Dioxide

Journal of the American Chemical Society, 2001
Liquid or supercritical carbon dioxide (scCO(2)) is a versatile reaction medium for ring-opening metathesis polymerization (ROMP) and ring-closing olefin metathesis (RCM) reactions using well-defined metal catalysts. The molybdenum alkylidene complex 1 and ruthenium carbenes 2 and 3 bearing PCy(3) or N-heterocyclic carbene ligands, respectively, can be
A, Fürstner, L, Ackermann, K, Beck, H, Hori, D, Koch, K, Langemann, M, Liebl, C, Six, W, Leitner   +8 more
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Polar Attributes of Supercritical Carbon Dioxide

Accounts of Chemical Research, 2005
AbstractFor Abstract see ChemInform Abstract in Full Text.
Poovathinthodiyil, Raveendran, Yutaka, Ikushima, Scott L, Wallen   +2 more
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Precipitation of Proteins in Supercritical Carbon Dioxide

Journal of Pharmaceutical Sciences, 1996
Supercritical CO2 was used as an antisolvent to form protein particles that exhibited minimal loss of activity upon reconstitution. Organic protein solutions were sprayed under a variety of operating conditions into the supercritical fluid, causing precipitation of dry, microparticulate (1-5 microns) protein powders.
M A, Winters, B L, Knutson, P G, Debenedetti, H G, Sparks, T M, Przybycien, C L, Stevenson, S J, Prestrelski   +6 more
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Dissolution of uranium dioxide in supercritical fluid carbon dioxide

Chemical Communications, 2001
Uranium dioxide can be dissolved in supercritical CO2 with a CO2-philic TBP-HNO3 complexant to form a highly soluble UO2(NO3)(2).2TBP complex; this new method of dissolving UO2 that requires no water or organic solvent may have important applications for reprocessing of spent nuclear fuels and for treatment of nuclear wastes.
M D, Samsonov, C M, Wai, S C, Lee, Y, Kulyako, N G, Smart   +4 more
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Supercritical Carbon Dioxide: The "Greener" Solvent

Environmental Science & Technology, 1996
It's not toxic and it doesn't harm the ozone layer, but can supercritical CO2 do the job in major industrial applications?
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Homogeneous Catalysis in Supercritical Carbon Dioxide

2003
The utilization of SCFs as reaction media for metal-complex-catalyzed reactions has received growing attention in the last decade [1]. In fact, the peculiar properties of SCFs (high diffusivity, low viscosity, compressibility, tuneable solvent properties, etc) can make advantageous the use of SCFs as media for metal-complex catalyzed reactions in place
QUARANTA, Eugenio, EARLY T. R., HOLMES A. B., LEE J. K., STAMP L. M.   +4 more
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