Liquid purification or separation – With means to add treating material – Chromatography
Patent
1989-07-31
1991-01-22
Therkorn, Ernest G.
Liquid purification or separation
With means to add treating material
Chromatography
2105021, 210635, 210656, 502402, 502439, 521 56, 521 76, 521188, B01D 1508
Patent
active
049869086
ABSTRACT:
Porous organic microspheres for use in HPLC are formed by coacervating a colloidal silica sol in a uniform mixture of the sol and a polymerizable organic material. The silica particles which formed the sol are removed from the microspheres with ammonium bifluoride. The remaining organic microspheres are rigid, have uniform pore sizes and distribution, and do not swell or shrink in the presence of the solvents used in HPLC.
REFERENCES:
patent: 2408986 (1946-10-01), Marisic et al.
patent: 3275576 (1966-09-01), Flodin et al.
patent: 3652540 (1972-03-01), Determann et al.
patent: 3910848 (1975-10-01), Froehlich
patent: 3928272 (1975-12-01), Brancato
patent: 3931063 (1976-01-01), Renner
patent: 4010242 (1977-03-01), Iler et al.
patent: 4045353 (1977-08-01), Kosaka et al.
patent: 4094833 (1978-06-01), Johansson et al.
patent: 4685930 (1987-08-01), Kasprzak
patent: 4687814 (1987-08-01), Chaumont et al.
Perry's Chemical Engineering Handbook, 4th Edition, McGraw-Hill Book Co., New York, 1963, pp. (16-16)-(16-19).
Ito et al., Journal of Chromatography, 333:107-114 (1985).
Kato et al., Journal of Chromatography, 333:96-106 (1985).
Hirata et al., Journal of Chromatography, 396:115-120 (1987).
Hjerten et al., Journal of Chromatography, 396:101-113 36 (1981).
Porath, Journal of Chromatography, 218:241-259 (1981).
Dawkins et al., Journal of Chromatography, vol. 371, 283-291 (1986).
Leibu Henry J.
Stout Richard W.
E. I. Du Pont de Nemours and Company
Therkorn Ernest G.
LandOfFree
Organic-based porous microspheres for HPLC does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Organic-based porous microspheres for HPLC, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Organic-based porous microspheres for HPLC will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1553820