Fw: glyoxal yellowing now: How do you know it's hard?

----- Original Message -----
From: "MARTINM" <martinm@SoftHome.net>
To: "Ryuji Suzuki" <rs@silvergrain.org>
Sent: Sunday, February 06, 2005 1:06 PM
Subject: Re: glyoxal yellowing now: How do you know it's hard?

> > No, it can be done in one step. By the way there are a couple of
> > patents referring to that possibility... >
> Can you provide the patent numbers?
>
I didn't find them right now but for my emulsions I usually add
approximately 5mg silane (from a a 5% methanol/silane stock solution) per
gram gelatin.
>
> Also, did you try treating the glass coating rod with
> 3-aminopropyltriethoxysilane?

No, never. Incidentally, there are better ways to coat glass plates.

Martin
>
>
> ----- Original Message -----
> From: "Ryuji Suzuki" <rs@silvergrain.org>
> To: <alt-photo-process-l@sask.usask.ca>; <martinm@SoftHome.net>
> Sent: Saturday, February 05, 2005 8:13 PM
> Subject: Re: glyoxal yellowing now: How do you know it's hard?
>
>
> > From: MARTINM <martinm@SoftHome.net>
> > Subject: Re: glyoxal yellowing now: How do you know it's hard?
> > Date: Sat, 05 Feb 2005 10:46:11 +0100
> >
> > > No, it can be done in one step. By the way there are a couple of
> > > patents referring to that possibility...
> >
> > Can you provide the patent numbers?
> >
> > Also, did you try treating the glass coating rod with
> > 3-aminopropyltriethoxysilane?
> >
> > --
> > Ryuji Suzuki
> > "People seldom do what they believe in. They do what is convenient,
> > then repent." (Bob Dylan, Brownsville Girl, 1986)
>
Received on Mon Feb 7 00:04:32 2005