Re: Gum print formaline

I have spent a full hour searching the archives and the FAQ about how to
use glutaraldehyde in gelatin sizing, but find no hints to how to do it .
Can someone who has not done enough community service in this area ,
please, help a newbe!
__________________
Kare Bondeson

Ryuji Suzuki wrote:

Part of previous message below:

>I've done quite a bit of literature research and my own experiments as
>well. Glutaraldehyde is the easiest and most effective hardening
>agent. This is followed by 2,4-dichloro-6-hydroxy-s-triazine, active
>vinyl compounds, epoxides, aldehyde starch, mucochloric acid, etc,
>etc. Unfortunately, some of these compounds are not commonly
>available. There are a couple of naturally occuring compounds capable
>of crosslinking gelatin but those are supplied as pharmacological
>agents and the cost is prohibitive for photographic use.
>
>I think I've done enough community service in this area. Unless I get
>a grant specific for this issue or something, I'll stick with
>glutaraldehyde (and 2,4-dichloro-6-hydroxy-s-triazine, which is not
>commercially available, but if you have a fume hood, you can make it
>in a couple of hours.).
>
>--
>Ryuji Suzuki
>"People seldom do what they believe in. They do what is convenient,
>then repent." (Bob Dylan, Brownsville Girl, 1986)
>
>
>
Received on Wed Jan 26 04:30:25 2005