[alt-photo] Re: 1922 Kodak Sulfonic Acid Dye

[Mustafa Umut Sarac]

Tom ,

Thank you , I found a book from a Russian site , called Dye Technologies ,
dated from 1940 and published by Kodak. I learned that there is even 1920
version plus later versions.
My copy is extremelly detailed and there is may be thousand chemicals used
by Kodak at 1940 and earlier.
I found there are lots of greens and oranges as chemicals with different
sensitometric readings.
For example , Orange 1 , 2 , 3 etc.
And every special curve change with ph if I am not wrong.
But if you search for sulfonates , search becomes narrower. I found some
names also.
But I think looking to 1920 book will be much rewarded.
Ron at APUG says ciba produce water soluble azo dyes with sulfonates aftter
1946.
Two gelatin three dimensional  coatings work as mordants with the help of
alums. And He says sulfonates used as textile dyes with locking with
mordants.
This information is interesting because mordants increase the color density
of the dyes also.
So the two strip process colors are mordant colors as it is used for
hundreds of years at textile industry.
I wrote to Eastman House and the employee made 3 english mistakes in one
sentence. I dont believe they will return with a useful information.
But the good side of the story , its about colors and may be you can make
powder burnt sienna , put in to ink cartridge with a alcohol solution and
print two color prints on paper after you take green red stereo images and
print as 3d glass viewable image.
There is a fresco making business and they sell countless powders to paint
churches. This can be used also.

Best ,

Mustafa Umut Sarac

Istanbul