Re: Shopping for a hardener

You can buy them from Sigma, and other scientific lab suppy houses.

"Bisepoxides" is a term referring to a group of compounds which have
two epoxy functional groups. Some are less toxic than others. I posted
a long report on these agents some time ago. It works well, the only
disadvantage is that I have to let the sized paper sit at room
temperature for a week before coating with emulsion, but if you coat
in large batches, this shouldn't be a problem at all.

From: ryberg <cryberg@comcast.net>
Subject: Re: Shopping for a hardener
Date: Wed, 18 Jan 2006 15:51:00 -0800

> "Bisepoxides are another class of excellent hardening agent. You can
> buy this in a bottle and you can mix them in gelatin solution
> as-is."
> I spent a few minutes on google with no hint of a source. If you have
> one, I'd appreciate it--I live in an urban area with no chance of mixing
> outside and have asthma which precludes the volatile ones hardners.
> Thanks
> Charles Portland OR
>
Received on Wed Jan 18 18:06:30 2006