Hi Amol

Do NOT attempt to dip coat with 2A64, unless you are happy to throw  
away the majority of it after around 4 to 6 hours.

This is a 2 part urethane, and 1 part is moisture sensitive.

Spray coating is your best option by far. If quantities to coat are  
few, then mix and spray as desired but the pot life when mixed is only  
a couple of hours before rheology and viscosity drift too far.

If quantities are high, then I suggest having each part mixed via a  
pump system complete with spiral mixer. This way you minimise wastage  
but the spiral mixer and pump circuit need thoro purging.

You might keep in mind that 1A20 was designed to replace 2A64 as a one  
part material with similar performance characteristics.

If I was you, I would stick with 1A33 - it will do all you want but if  
its not on the drawing, then 2A64 it will be.

Regards

Graham Naisbitt

Email: [log in to unmask]
Phone: +44 (0)12 5252 1500
Web: www.gen3systems.com

On 29 May 2009, at 13:34, Kane, Amol (349) wrote:

> Dear Technet Gurus,
> I am looking for any experiences you may have with the 2A64 coating.  
> We currently spray other urethanes (1A33, 1A20 etc), but not have  
> had any experience with this particular coating. Looking for info on  
> whether this is used in spray or dip application (the TDS says it  
> can be used in either, but is there a particular method it better  
> lends itself to?), any peculiar characteristics that other urethanes  
> from Humiseal do not have, general experience working with this  
> material.
>
> Also, which application method (spray vs. dip) is better to resist a  
> salt spray/salt fog environment? You can reply offline if you so  
> choose.
>
> Thanks in advance,
> Amol
>
>
>
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