Patent · US Expired

Color photographic recording material containing a DIR coupler

US5035987A · kind A · utility

5Cited by

4References

2Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Heinrich Odenwalder · Leverkusen, DE
Thomas Krüger · Leverkusen, DE
Hans-Joachim Schumann · Neunburg vorm Wald, DE

Key dates

Filing date	Sep 21, 1990
Grant date	Jul 30, 1991
Priority date	—
Expiry date	Sep 21, 2010

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D417/14
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Where DIR couplers corresponding to formula I are used in color photographic silver halide materials, good edge effects and interimage effects are obtained. ##STR1## In formula (I), A represents halogen, --OR, --SR, --CN, --COR, --CONHR, --COOR, --SO.sub.2 R, --SO.sub.2 NHR, ##STR2## R represents alkyl, aralkyl, aryl or hetaryl; Q represents a substituent for compelting a 5- or 6-membered heterocyclic ring; PA1 D and E, which may be the same or different, represent substituents attached to the C atom of the C.dbd.N group by a C, O, S or N atom, including those substituents which, together with the C atom of the C.dbd.N group, complete a carbocyclic or heterocyclic ring; PA1 Y represents a group having a silver halide development inhibiting function which is releasable during color development.

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