Glass as sintering aid and open-pore molded body and method...

Details Glass as sintering aid and open-pore molded body and method... Glass as sintering aid and open-pore molded body and method...

2006-12-12

2006-12-12

Group, Karl (Department: 1755)

Compositions: ceramic

Ceramic compositions

C501S072000, C623S023560, C424S602000

Reexamination Certificate

active

07148163

ABSTRACT:
The present invention relates to a glass used as a sintering aid for a resorbable molded body containing calcium phosphate as well as to a method for manufacturing said molded body. According to the invention, the material is β-tricalcium phosphate and the glass has a chemical composition of 68–78% by weight SiO2, 5–12% by weight MgO and 12–27% by weight Na2O. The aforesaid molded body is manufactured by melting said glass, grinding it until a grain size D50of 0.7–2 μm is achieved and mixing it with β-tricalcium phosphate having a grain size D50of 1–7.5 μm, giving the mixture the desired shape and producing the molded body by sintering said mixture at between 1,150 and 1,350° C., wherein the grain size of β-TCP must not be smaller than that of the glass.

REFERENCES:
patent: 2004/0087429 (2004-05-01), Ogawa et al.
patent: 2004/0175430 (2004-09-01), Berger et al.
patent: 2004/0228927 (2004-11-01), Berger et al.
patent: 2005/0079226 (2005-04-01), Gonda et al.
patent: 0 237 043 (1987-03-01), None
patent: 0 541 546 (1990-11-01), None

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