Plastic and nonmetallic article shaping or treating: processes – Encapsulating normally liquid material – Liquid encapsulation utilizing an emulsion or dispersion to...
Patent
1997-01-17
1998-06-16
Nutter, Nathan M.
Plastic and nonmetallic article shaping or treating: processes
Encapsulating normally liquid material
Liquid encapsulation utilizing an emulsion or dispersion to...
264 41, 252307, 2523153, 4284022, 424 45, 436 17, 436 18, B01J 1300, B01J 1302, B01J 1304, B32B 516
Patent
active
057665206
ABSTRACT:
A method of preserving sensitive biological dispersions, suspensions, emulsions and solutions by forming stable foams from fluid materials to be dehydrated, as an aid both to the drying of one or more biologically active substrates in the fluid and as an aid in preparing an easily divisible dried product suitable for further commercial use. The stable foams are formed by partially removing the water to form a viscous liquid and by further subjecting the reduced liquid to vacuum, to cause it to "boil" during further drying at temperatures substantially lower than 100 degrees C. In other words, reduced pressure is applied to viscous solutions or suspensions of biologically active materials to cause the solutions or suspensions to foam during boiling, and during the foaming process further solvent removal causes the ultimate production of a stable open-cell or closed-cell foam.
REFERENCES:
patent: 4891319 (1990-01-01), Roser
patent: 5098893 (1992-03-01), Franks et al.
patent: 5271881 (1993-12-01), Redding, Jr.
patent: 5290765 (1994-03-01), Wettlaufer et al.
patent: 5409703 (1995-04-01), McAnalley et al.
patent: 5565318 (1996-10-01), Walker et al.
Nutter Nathan M.
Universal Preservation Technologies, Inc.
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