Patent · US Expired

Colour photographic recording material

US5543280A · kind A · utility

0Cited by

3References

9Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Beate Weber · Leichlingen, DE
J org Hagemann · Cologne, DE
G unter Helling · Odenthal, DE
Markus Geiger · Langenfeld, DE

Key dates

Filing date	Nov 13, 1995
Grant date	Aug 6, 1996
Priority date	—
Expiry date	Nov 13, 2015

Classification

Technology area (CPC G)Physics
CPC primaryG03C2001/03517
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A color photographic material which contains in at least one blue sensitive layer containing a yellow coupler a compound of the formula (I) ##STR1## in which R.sub.1 means --(X).sub.m --R.sub.4, PA1 m means 0 or 1, PA1 X means --CO--, --CO--NR.sub.5 -- or --CO--O--, PA1 R.sub.4 means H, alkyl, aryl or alkenyl, PA1 R.sub.2 means H or alkyl, PA1 R.sub.3 means H or alkyl, PA1 R.sub.5 means H, alkyl, cycloalkyl or aryl, PA1 n means 1 to 20, providing that m is 1 in at least 10% of the R.sub.1 groups, is distinguished by improved color stability.

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