Infrared filter dye for photographic element

Details Infrared filter dye for photographic element Infrared filter dye for photographic element

G - Physics

03

C

96/203

G03C 1/83 (2006.01) C09B 23/01 (2006.01) C09B 23/10 (2006.01)

Patent

CA 1337923

A infrared absorbing filter dye that also imparts a cool image tone after processing is disclosed for use in photographic elements. The dye has the formula: Image where Z and Z' each independently represent the atoms necessary to complete a substituted or unsubstituted benzothiazole nucleus, benzoselenazole nucleus, indole nucleus, naphthothiazole nucleus, naphtho- selenazole nucleus, or benzindole nucleus, R1 and R2 each independently represents alkyl of from 1 to 8 carbon atoms or sulfoalkyl, carboxy- alkyl, or sulfatoalkyl of from 2 to 6 carbon atoms, with the proviso that when Z and Z' are sulfo- substituted benzindole nuclei, R1 and R2 have at least 3 linear carbon atoms between the heterocyclic nitrogen atom and the sulfo or sulfato group if they are sulfoalkyl or sulfatoalkyl, or at least 2 linear carbon atoms between the heterocyclic nitrogen atom and the carboxy group if R1 and R2 are carboxy- alkyl, Z" represents the atoms necessary to complete a substituted or unsubstituted piperidyl ring, a substituted or unsubstituted pyrrolidyl ring, and substituted or unsubstituted pyrazinyl ring.

604337

Affiliated with

Also associated with

Rating

Infrared filter dye for photographic element does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Infrared filter dye for photographic element, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared filter dye for photographic element will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1321983