Process for producing porous composite materials

Details Process for producing porous composite materials Process for producing porous composite materials

2007-01-16

2007-01-16

Zemel, Irina S. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

C521S061000, C521S092000, C521S102000, C623S011110, C623S016110, C623S023510, C623S023610, C434S423000

Reexamination Certificate

active

10492300

ABSTRACT:
This invention relates to a process for producing porous and composite materials comprising steps of: freezing a complex containing at least one calcium salt selected from calcium carbonate, calcium phosphate, and hydroxyapatite and collagen, at least a part of which is gelatinized; and then lyophilizing the resultant. The porous and composite materials obtained by the method of the present invention have large pore diameters, high porosities, and adequate mechanical strengths and biodegradability. Thus, they are suitable for implants such as bone fillers, drug carriers for sustained-release, and the like.

REFERENCES:
patent: 5776193 (1998-07-01), Kwan et al.
patent: 07-101708 (1995-04-01), None
patent: 11-199209 (1999-07-01), None
patent: 2000-005298 (2000-01-01), None
patent: WO97/14376 (1997-04-01), None

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