Patent · US Expired

Glass as sintering aid and open-pore molded body and method for manufacturing same

US7148163B2 · kind B2 · utility

1Cited by

0References

2Claims

0Family size

Assignee

BAM Bundesanstalt fuer Materialforschung und-pruefung · DE

Inventors

Georg Berger · Panketal, DE
Renate Gildenhaar · Berlin, DE
Andrea Spitzer · Berlin, DE

Key dates

Filing date	Oct 20, 2003
Grant date	Dec 12, 2006
Priority date	—
Expiry date	Jul 6, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C14/00
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

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 D50 of 0.7–2 μm is achieved and mixing it with β-tricalcium phosphate having a grain size D50 of 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.