Patent · US Expired

Process for preparing a red pigmentary iron oxide

US4153472A · kind A · utility

3Cited by
4References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 13, 1977
Grant dateMay 8, 1979
Priority date—
Expiry dateDec 13, 1997

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC01P2006/60
  • WIPO fieldBasic materials chemistry
  • WIPO sectorChemistry

Abstract

This invention describes the preparation of a red pigment of iron oxide from ferrous salts, by simultaneous reduction of organic nitro derivatives.

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