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Old 05-18-2006, 09:13 AM
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SS Urethane

Is there such a thing as single stage urethane?
Or is that just another name for acrylic enamel?

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Old 05-18-2006, 09:38 AM
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Yes, there is a difference between SS urethanes and Acrylic enamel. Most of the time SS urethanes will share a common hardener with a urethane clear within the same line. As to what the difference is in chemical composition I have no idea.
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Old 05-18-2006, 11:57 AM
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Single stage urethane still requires a hardener, but does not require a clear coat. PPG's Concept line is one, but the P sheet for it says it can be clear coated if desired, but it has an inherent gloss.

Vince
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Old 05-18-2006, 05:22 PM
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There has to be a difference, since acrylic enamels can be sprayed without a hardener (but who would) while urethanes can't. Also this is just general, depending on the brand and line it could be different, but acrylic enamel when you add a hardener to it the ratio is usually something like maybe 8:1 and acrylic urethane is more often something like 4:1 or something, greater amount of hardener. My guess it is mainly be the resin used??? but I am not a chemist so...
I always learned in terms of durability it went lacquers were least durable, followed by you acrylic enamels, then urethenes and polyurethane.
In the omni line as one example the have mae acylic enamel, and also have mtk acrylic urethane. And in other lines they also have the delstar acrylic enamel ,the dcc concept acrylic urethane, and the dau urethane. And I remember hearing the statement use a hardener in acrylic enamel to make it perform more like a urethane.
Hopefully some chemists will be able to tell what the differences are between something called a acrylic enamel compared to an acrylic urethane. Its very easy to get confused, as the terms are often used together. For example the tech sheet for delstar calls it polyurethane acrylic enamel. And also if you look at recoat times without sanding and time to buff, the acrylic enamel is usually longer then urethane.

Last edited by kenseth17; 05-18-2006 at 06:56 PM. Reason: Corrected typing errors and my first grade level spelling.
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Old 05-18-2006, 05:28 PM
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Jim had a brain fart... he knows this already ... Must be the Alzheimer's kicking in , or too many Iso's inhaled over the years
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Old 05-19-2006, 06:02 AM
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You're right, what was I thinking.
All the talk of acrylic enamel on a different forum got me
all messed up. I remember Imron, and how it was the best
thing out there. It's hell getting old, I think, I don't remember.
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