Patent · US Expired

Process for preparing fracture-resistant sol/gel particles

US5468558A · kind A · utility

2Cited by

9References

10Claims

0Family size

Assignee

Solvay Catalysts GmbH · DE

Inventors

Helmut Derleth · Nienburg, DE
Karl-Heinz Bretz · Nienburg, DE

Key dates

Filing date	May 14, 1993
Grant date	Nov 21, 1995
Priority date	—
Expiry date	May 14, 2013

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2993
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A process for preparing fracture-resistant sol/gel particles which contain silicon dioxide, in which a highly disperse filler is added to the aqueous alkali metal silicate solution and/or the aqueous acid solution used in the preparation process.

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