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Title:
METHOD FOR THE DISPERSION OF WATER-SOLUBLE OR HYDROPHILIC SUBSTANCES IN A SUPERCRITICALLY PRESSURIZED FLUID
Document Type and Number:
WIPO Patent Application WO2004096173
Kind Code:
A3
Abstract:
A method for the dispersion of water-soluble or hydrophilic substances in a supercritically pressurized fluid by adding a surfactant, said surfactant being a block copolymer comprising at least one C02-philic block and at least one non ionic hydrophilic block.

Inventors:
RICHARD JOEL (FR)
DESCHAMPS FRANTZ (FR)
LACROIX-DESMAZES PATRICK (FR)
BOUTEVIN BERNARD (FR)
Application Number:
PCT/FR2004/000994
Publication Date:
July 28, 2005
Filing Date:
April 23, 2004
Export Citation:
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Assignee:
ETHYPHARM SA (FR)
CENTRE NAT RECH SCIENT (FR)
RICHARD JOEL (FR)
DESCHAMPS FRANTZ (FR)
LACROIX-DESMAZES PATRICK (FR)
BOUTEVIN BERNARD (FR)
International Classes:
A61K9/20; A61K9/28; C08F293/00; C08L53/00; C09K23/52; (IPC1-7): A61K9/50; A61K9/107; C08F287/00
Domestic Patent References:
WO1997018234A21997-05-22
Foreign References:
US6191215B12001-02-20
EP0706821A11996-04-17
Other References:
DA ROCHA S R P, HARRISON K L, JOHNSTON KP: "Effect of Surfactants on the Interfacial Tension and Emulsion Formation between Water and Carbon Dioxide", LANGMUIR, vol. 15, 1999, pages 419 - 428, XP002276079
DA ROCHA S R P ET AL: "Concentrated CO2-in-water emulsions with nonionic polymeric surfactants", JOURNAL OF COLLOID AND INTERFACE SCIENCE 01 JUL 2001 UNITED STATES, vol. 239, no. 1, 1 July 2001 (2001-07-01), pages 241 - 253, XP002276080, ISSN: 0021-9797
JOHNSTON K P: "Block copolymers as stabilizers in supercritical fluids", CURRENT OPINION IN COLLOID AND INTERFACE SCIENCE 2000 UNITED KINGDOM, vol. 5, no. 5-6, 2000, pages 351 - 356, XP002276081, ISSN: 1359-0294
DESIMONE J M ET AL: "DISPERSION POLYMERIZATIONS IN SUPERCRITICAL CARBON DIOXIDE", SCIENCE, AMERICAN ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE,, US, vol. 265, 15 July 1994 (1994-07-15), pages 356 - 359, XP002060305, ISSN: 0036-8075
LIM K T ET AL: "Synthesis and properties of semifluorinated block copolymers containing poly(ethylene oxide) and poly(fluorooctyl methacrylates) via atom transfer radical polymerisation", POLYMER, ELSEVIER SCIENCE PUBLISHERS B.V, GB, vol. 43, no. 25, 2002, pages 7043 - 7049, XP004389474, ISSN: 0032-3861
HUSSAIN H ET AL: "SYNTHESIS AND CHARACTERIZATION OF POLY(ETHYLENE OXIDE) AND POLY(PERFLUOROHEXYLETHYL METHACRYLATE) CONTAINING TRIBLOCK COPOLYMERS", MACROMOLECULAR CHEMISTRY AND PHYSICS, WILEY VCH, WEINHEIM, DE, vol. 203, no. 14, 18 October 2002 (2002-10-18), pages 2103 - 2112, XP001190743, ISSN: 1022-1352
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