Patent · US Expired

Photographic silver halide emulsion with hetero-N containing polymeric binder

US4152161A · kind A · utility

2Cited by

3References

3Claims

0Family size

Assignee

AGFA-Gervaert AG · DE

Inventors

Karsten-Josef Idel · Krefeld, DE
Wilhelm Saleck
Erich Wolff · Solingen, DE
Dieter Freitag · Krefeld, DE

Key dates

Filing date	Feb 20, 1976
Grant date	May 1, 1979
Priority date	—
Expiry date	Feb 20, 1996

Classification

Technology area (CPC G)Physics
CPC primaryG03C1/053
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A copolymer containing 0.1 to 20 mol-% of recurring structural units of the formula ##STR1## is a valuable peptising agent for the precipitation of silver halide. Sensitivity, onset of development and silver coating power are advantageously influenced.

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