Patent · US Expired

Electrostatographic suspension developer of block copolymer reacted with mercaptan

US4599291A · kind A · utility

9Cited by

1References

7Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Wolfgang Podszun · Neunburg vorm Wald, DE
Josef Witte · Cologne, DE
Herman Uytterhoeven · Bonheiden, BE
John C. Goossens · Greenwood, US

Key dates

Filing date	Mar 20, 1985
Grant date	Jul 8, 1986
Priority date	—
Expiry date	Mar 20, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2800/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The suspension developer contains, in an electrically-insulating carrier liquid, a pigment and a block copolymer comprising a block of polymerized vinylaromatic compounds and a block of polymerized dienes the double bonds of which have been partially or completely reacted with alkyl mercaptans. The developer is distinguished by its high dispersion stability, small particle size and uniform particle size distribution.

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