Use of indoleine-cyaninedisulphonic acid derivatives

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United States of America Patent

PATENT NO 5747233
SERIAL NO

08856890

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Abstract

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The present invention relates to the use of dyestuffs of the general formula I ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 and M.sup..sym. are as defined in claim 1, as infrared-absorbing agents in hydrophilic colloidal layers, for example in recording materials or for detection purposes, recording materials, for example photographic recording materials, which comprise such dyestuffs in hydrophilic colloidal layers, and new dyestuffs of the general formula I.

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Patent Owner(s)

Patent OwnerAddress
RIEDEL-DE HAEN AKTIENGESELLSCHAFTSEELZE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Lehmann, Lutz Uwe Seelze, DE 5 24
Lonsky, Ralph Neustadt, DE 5 14

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