Re: Clear Polyurethanes

From: Michael Tsenter (nest@primenet.com)
Date: Thu Jun 11 1998 - 08:13:48 EEST

Hi Ron:

We do have water clear polyurethane material called PC2000VS/G2000VS.
It has the following basic properties:
Shore D 78-82, Pot life: 4-6 minutes, De-mold time: 30-40 minutes
Glass transition: 160-170 F.
Complete technical data sheet is available on our web site at:
http://www.primenet.com/~nest/

It is best to fill the mold under vacuum. If the vacuum system is not
available or the mold can not be vented properly, you can use a pressure
tank. The mold has to be pre-heated to 140 deg. F, and filled mold must
be cured at 140 deg. F as well. You should not use a mold release,
since it can create a frosty surface.

Best regards,
Michael Tsenter 

-- 
CAMATTINI - North America
a division of NEST Technologies
3849 Ridgemoor Drive
Studio City, California 91604

Tel: 	818-761-6500	
Fax:	818-761-6116
e-mail:		nest@primenet.com
web site:	http://www.primenet.com/~nest/

Ron Hollis wrote:
> 
> Question
> 
> What is the best polyurethane material (manufacturer) for casting
> clear parts?
> 
> What are some special processes required over traditional polyurethane
> castings? (e.g. heating RTV, heating materials, etc.)
> 
> Any particular issues with silicone (tin vs. platinum cure)?
> 
> Any information is appreciated.
> 
> Ron Hollis
>

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