Patent · US Active

Composite filler particles and process for the preparation thereof

US9193849B2 · kind B2 · utility

5Cited by

14References

9Claims

0Family size

Assignee

Dentsply International Inc. · US

Inventors

Simon Stelzig · Radolfzell, DE
Jörg Kempter · Konstanz, DE
Stephanie Noerpel · Konstanz, DE
Joachim E. Klee · Radolfzell, DE
Andreas Facher · Gundetswil, CH
Uwe Walz · Konstanz, DE
Christoph Weber · Heidenheim, DE

Key dates

Filing date	Dec 14, 2012
Grant date	Nov 24, 2015
Priority date	—
Expiry date	Dec 14, 2032

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2214/12
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

A process for the preparation of composite filler particles, comprising: (a) coating a particulate filler having a median particle size (D50) of from 1 to 1200 nm; (b) agglomerating the coated particulate filler, for providing a granulation of the coated particulate filler wherein the granulation contains the coated particulate filler particles whereby the at least one coating layer may be crosslinked by crosslinking groups obtained by reacting the reactive groups and optionally a further crosslinking agent.

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