Patent · US Expired

Color-photographic recording material containing non-diffusing electron donor precursor compounds

US4436810A · kind A · utility

0Cited by

2References

3Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Karl Kuffner · Unterhaching, DE
Paul Marx · Corning, US
Wolfgang Lassig · Munich, DE

Key dates

Filing date	Apr 29, 1983
Grant date	Mar 13, 1984
Priority date	—
Expiry date	Apr 29, 2003

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S430/16
WIPO fieldOptics
WIPO sectorInstruments

Abstract

Compounds corresponding to the formula: ##STR1## wherein Z represents a radical which completes a condensed aromatic ring system; PA1 R.sup.1 represents an n-valent aliphatic or aromatic radical; PA1 R.sup.2 represents H, alkyl or aryl, PA1 R.sup.3 represents one or more radicals to control the diffusion properties and the activation pH; and PA1 n represents 1 or 2, are suitable ED precursor compounds for use in color-photographic recording materials. They are preferably used in a combination with reducible dye-releasers. They are also suitable as so-called scavengers.

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