Porous gelatin material, gelatin structures, methods for...

Details Porous gelatin material, gelatin structures, methods for... Porous gelatin material, gelatin structures, methods for...

2008-07-29

2008-07-29

Davis, Ruth A (Department: 1651)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Particulate form

C424S400000, C424S451000, C424S492000

Reexamination Certificate

active

10516614

ABSTRACT:
The present invention relates to a porous gelatin material in the form of spherical particles with a continuous pore structure and cast, three-dimensional, porous gelatin structures. The invention also comprises methods for preparation of the porous gelatin materials and structures. The method for preparing the porous gelatin material in the form of spheres with a continuous pore structure comprises the steps of preparing a homogenous water-based gelatin solution, adding an emulsifier with an HLD value >9, adding a first composition comprising an organic solvent and an emulsifier with an HLB value >9, adding a second composition comprising an organic solvent and an emulsifier with an HLB value <8 and allowing the gelatin material to solidify. Uses of the materials according to the invention are also included.

REFERENCES:
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patent: 5541234 (1996-07-01), Unger et al.
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patent: 5866155 (1999-02-01), Laurencin et al.
patent: 0 222 718 (1987-05-01), None
patent: WO 82/00660 (1982-03-01), None
patent: WO 00/17257 (2000-03-01), None

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