Patent · US Expired

Core/oxide/dye pigmentary colorants

US5127952A · kind A · utility

14Cited by

6References

31Claims

0Family size

Assignee

Rohne-Poulenc Chimie

Inventors

Jacques Persello · Miribel, FR
Claude Ceintrey · Paris, FR
Michel Sutter · Dieppe, FR

Key dates

Filing date	May 30, 1990
Grant date	Jul 7, 1992
Priority date	—
Expiry date	May 30, 2010

Classification

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

Abstract

Novel pigmentary colorants, well adapted for the production of electrostatic developer powders, are comprised of mineral core particulates, at least one mineral oxide and at least one dye, said at least one mineral oxide being deposited onto the surface area of the core particulates, and said at least one dye being absorbed onto the core particulates or onto the at least one mineral oxide and/or being at least partly physically confined within a matrix of the mineral oxide.

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