Patent · US Expired

Precursor preparation for the production of neutral metal oxide sols

US5389361A · kind A · utility

8Cited by

7References

4Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Karl Osterried · Dieburg, DE
Wolfgang Hechler · Herbstein, DE
Hans-Dieter Bruckner · Darmstadt, DE
Roland Martin · Hamburg, DE

Key dates

Filing date	Jun 15, 1992
Grant date	Feb 14, 1995
Priority date	—
Expiry date	Jun 15, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/64
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The invention relates to a preparation which is suitable for preparing a neutral metal oxide sol and contains 35-75% by weight of one or more metal oxide sols or metal oxide hydrates and 15-45% by weight of one or more hydroxycarboxylic acids and/or hydroxycarboxylic acid derivatives as stabilizers.

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