Patent · US Active

Amorphous submicron particles

US7850102B2 · kind B2 · utility

8Cited by

14References

19Claims

0Family size

Assignee

EVONIK DEGUSSA GMBH · DE

Inventors

Karl Meier · Bornheim, DE
Ulrich Brinkmann · Munich, DE
Christian Panz · Wesseling, DE
Doris Misselich · Lechenich, DE
Christian Gotz · Seligenstadt, DE

Key dates

Filing date	Oct 16, 2007
Grant date	Dec 14, 2010
Priority date	—
Expiry date	Feb 6, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for milling amorphous solids using a milling apparatus can result in particles having a median particle diameter d50 of <1.5 μm. The process includes: operating a mill in a milling phase with an operating medium selected from the group consisting of gas, vapor, steam, a gas containing steam and mixtures thereof, and heating a milling chamber in a heat-up phase before the actual operation with the operating medium in such a way that a temperature in the milling chamber, the mill exit or both, is higher than a dew point of the operating medium.

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