Particles from supercritical fluid extraction of emulsion

Details Particles from supercritical fluid extraction of emulsion Particles from supercritical fluid extraction of emulsion

2006-02-14

2006-02-14

Drodge, Joseph (Department: 1723)

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

C210S639000, C264S005000, C264S011000, C424S489000, C424S501000, C518S721000

Reexamination Certificate

active

06998051

ABSTRACT:
A method of producing microparticles and nanoparticles of a solute via the extraction of solvent, having the solute dissolved therein, from an emulsion using a supercritical fluid. The solute to be precipitated is dissolved in the solvent to form a solution, and the solution is dispersed in an immiscible or partially miscible liquid to form an emulsion. The particles are produced via the extraction of the solvent from the emulsion using the supercritical fluid. The process can produce an aqueous suspension of particles that are substantially insoluble in water, and the solvents used in the process to form the emulsion initially can be recovered and recycled.

REFERENCES:
patent: 4177177 (1979-12-01), Vanderhoff et al.
patent: 4734451 (1988-03-01), Smith
patent: 4744926 (1988-05-01), Rice
patent: 4898673 (1990-02-01), Rice et al.
patent: 5158704 (1992-10-01), Fulton et al.
patent: 5169968 (1992-12-01), Rice
patent: 5189107 (1993-02-01), Kasai et al.
patent: 5216065 (1993-06-01), Colyer et al.
patent: 5244768 (1993-09-01), Inaba
patent: 5266205 (1993-11-01), Fulton et al.
patent: 5290959 (1994-03-01), Rice
patent: 5296166 (1994-03-01), Leong
patent: 5578650 (1996-11-01), Delgado et al.
patent: 5614089 (1997-03-01), Allington et al.
patent: 5622649 (1997-04-01), Hunter et al.
patent: 5639441 (1997-06-01), Sievers et al.
patent: 5750679 (1998-05-01), Haas et al.
patent: 5776486 (1998-07-01), Castor et al.
patent: 5789505 (1998-08-01), Wilkinson et al.
patent: 5827522 (1998-10-01), Nowack
patent: 5851453 (1998-12-01), Hanna et al.
patent: 5863696 (1999-01-01), Koyama et al.
patent: 5921478 (1999-07-01), Kamiwano et al.
patent: 5981474 (1999-11-01), Manning et al.
patent: 6095134 (2000-08-01), Sievers et al.
patent: 6106720 (2000-08-01), Kanel et al.
patent: 6228399 (2001-05-01), Parikh et al.
patent: 6235701 (2001-05-01), Senger Elsbernd
patent: 6291013 (2001-09-01), Gibson et al.
patent: 6299906 (2001-10-01), Bausch et al.
patent: 6372260 (2002-04-01), Andersson et al.
patent: 6380302 (2002-04-01), Ikenaga et al.
patent: 6384090 (2002-05-01), Riede et al.
patent: 6391452 (2002-05-01), Antonsen et al.
patent: 6414050 (2002-07-01), Howdle et al.
patent: 6440431 (2002-08-01), Yoshida et al.
patent: 6440493 (2002-08-01), Gibson et al.
patent: 6540393 (2003-04-01), Lyons et al.
patent: 2004/0091546 (2004-05-01), Johnson et al.
patent: 01-158042 (1989-06-01), None
Sjostrom, Brita and Bergenstahl, Bjorn. Preparation of submicron drug particles in lecithin-stabilized o/w emulsions; I. Model studies of the precipitation of cholesteryl acetate, International Journal of Pharmaceutics. 88, 53-62 (1992). Elsevier Science Publishers B V.
Sjostrom, Brita and Bergenstahl, Bjorn. Preparation of submicron drug particles in lecithin-stabilized o/w emulsions; I. Model studies of the precipitation of cholesteryl acetate, International Journal of Pharmaceutics. 84, 107-116 (1992). Elsevier Science Publishers B V.
Yoshinobu, Kawano; Shiomori, Koichiro; Kiyoyama, Shiro; Takeshita, Koichiro; and Hatate, Yasuo. Characteristics of Biodegradable Microcapsules by Solvent Evaporation in (W/O/W) Emulsion System Journal of Chemical Engineeiring of Japan. vol. 34.
Nakajima, Akira; Hashimoto, Kazuhito; and Watanabe, Toshiya. Recent Studies on Super-Hydrophobic Films, Monatshefte fur Chemie 132, 31-41 (2001). Austria.
Chung, Tze-Wen; Huang, Yi-You; and Liu Yi-Ze. Effects of the rate of solvent evaporation on the characteristics of drug loaded PLLA and PDLLA microspheres, International Journal of Pharmaceutics. 212, 161-169 (2001).

Affiliated with

Also associated with

Rating

Particles from supercritical fluid extraction of emulsion does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Particles from supercritical fluid extraction of emulsion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Particles from supercritical fluid extraction of emulsion will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3701857