Use of indolenine-cyaninedisulphonic acid derivatives

Details Use of indolenine-cyaninedisulphonic acid derivatives Use of indolenine-cyaninedisulphonic acid derivatives

C - Chemistry, Metallurgy

09

B

C09B 23/00 (2006.01) B41M 5/28 (2006.01) C09B 23/08 (2006.01) G03C 1/14 (2006.01) G03C 1/20 (2006.01) G03C 1/83 (2006.01)

Patent

CA 2154964

The present invention relates to the use of dye- stuffs of the general formula I Image (I) in which R1, R2 and R3 and M? are as defined in Claim 1, as infra- red-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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