Patent · US Active

Core-shell particles for use as a filler for feeder compositions

US10864574B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

HÜTTENES-ALBERTUS CHEMISCHE WERKE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG · DE

Inventors

Sandra LEHMANN · Potsdam, DE
Klaus RIEMANN · Wunstorf, DE
Nils ZIMMER · Garbsen, DE
Hermann LIEBER · Langenhagen, DE
Jürgen HÜBERT · Langenhagen, DE

Key dates

Filing date	Jun 27, 2017
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Dec 15, 2037

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB22C1/18
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to core-shell particles for use as a filler for feeder compositions for producing feeders, comprising (a) a core which possesses one or more cavities and a wall surrounding these cavities, where the core (a) has an average diameter in the range from 0.15 to 0.45 mm, (b) a shell enclosing the core and consisting of or comprising (b1) particles comprising or consisting of a material from the group consisting of calcined kaolin or cordierite, where the particles (b1) have a d10 of at least 0.05 μm and a d90 of at most 45 μm, and also (b2) a binder which binds the particles (b1) to one another and to the core (a).

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