clear coats

danp76

danp76

Oldtimer
I've have used some expensive clears that have a slight yellow tint to them. Is this because they use an inferior resin? I wouldn't think Glasurit would skimp on something like this at the $$$ they charge. What creates the yellowish tint?
 
Here is what can cause a clear to be yellow shade.
Crap resins as you pay for clarity rating and equivalent weights.
UV additives, the cheaper ones tend to be more yellow but private label people buy these for price and use less so usually don't show up.
Higher solids as you can use more UV additives because of weight.

Now for the company your talking about.
None of the above apply s most likely. (except the high solids part)
Look at this, in a painters pail or looking in can a foot thick, you may see a cloudy shade as they may be maxing out a blend of high end UV additives and they are reflecting the light different in these containers.
The trick is look through the clear when you are pouring and it will be Krystal clear.
Yes you can put in to much uv and cause problems say spraying a white or silver door add doing 3 coats (next to the factory finish) than notice it changed color at certain angles.

I remember back in 80s before BASF bought Glasurit the Glasurit rep in FL was actually using the yellow shade as a selling point to the high end shops.
 
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68 Coronet I've had great results with many clears out there, including SPI. I've been curious why some of the expensive clears are a yellowish tint in mixing cup. So, high solids clears can be more yellow if cheap or too many UV additives are used?
 
Sad thing here is you cannot say one clear is better because it is clearer than another, as there are a whole lot of other factors involved.
 
I suppose there is know way for someone to know what clear is "best," other than seeing how it holds up over the years. Although if a clear looks good 10 years down the road, that same manufacturer could be an entirely different clear, with just the same label.
 
I beginning to think this stuff is like gasoline, and I haven't had a bad one yet. I ran out of some SPI clear for my brother's truck about 6 years ago and used Nason on the hood, the entire truck still looks great, including the Nason. A friend used some $60 for a gallon set up 4:1 on his van about 5-6 years ago and it's never washed and still looks like it was sprayed yesterday, he sprayed 3 coats, never garaged.
 
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