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Old 02-14-2011, 05:43 PM
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Mixing Acrylic Lacquer with Acrylic Urethane

Ok guys I have being reading Barry K Ideas of what its a True Poli paints, the difference on Acrylic Urethane, Urethane Enamels, Lacquers and poliester resins....

well I got excited and bought 1/32(yeah that small quantities) of automotive paints of the same brands(No Name brand)

I got
Acrylic Lacquer(black)
Acrylic Urethane Clear Coat(the label said Polyurethane)
Acrylic Enamel(with hardener already mixed)

I mixed 3/8 Black lacquer with the Urethane clear coat and they mixed well(yeah don't use Lacquer thiner, paint will never dry, I learned that the hard way,) and with proper catalyzer/reducer ration the paint hardened and looked like Single Stage Urethane

then I Mixed Acrylic enamel with the Urethane clear and Oh Boy.....what a mess....

I think lacquers can be mixed with Urethanes because lacquers are simmilar to urethanes...but that is just me..I will not used this experiment on real world....

Thanks,

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Old 02-15-2011, 07:05 AM
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How can you get enamel with hardener already mixed?
It would start reacting immediately.
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Old 02-15-2011, 07:06 AM
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Sure you can mix it and yes it will dry, you could also mix it with a 2K sealer or a 2K primer or epoxy (some) or a SS urethane paint.

Not sure if there is a question here or not, or the point but here is what you have made, " redheaded stepchild from hell"

You have added a highly polyester, CAB loaded product to a polyol base product and the ISO ratio is now way out of whack, it will never fully cure,
poor durability and virtually no chemical resistance and CAB's also will cause the Urethane to split down the road.
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Old 02-15-2011, 07:06 AM
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Quote:
Originally Posted by jcclark
How can you get enamel with hardener already mixed?
It would start reacting immediately.
You can't.
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Old 02-15-2011, 09:19 AM
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Quote:
Originally Posted by BarryK
here is what you have made, " redheaded stepchild from hell"

You have added a highly polyester, CAB loaded product to a polyol base product and the ISO ratio is now way out of whack, it will never fully cure,
poor durability and virtually no chemical resistance and CAB's also will cause the Urethane to split down the road.
I just followed My curious Heart... , the catalized enamel mixed with Urethane clear gave me a cuagulated leather like substance...
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Old 02-15-2011, 10:44 AM
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Hey, nothing wrong with that!
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Old 02-15-2011, 10:55 AM
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Quote:
Originally Posted by BarryK
Hey, nothing wrong with that!
True, but I can't paint with a cuagulated paitn...

I need to mix more paints, like oil based poly with oil base enamels, maybe latex with water borne clears....
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Old 02-15-2011, 01:07 PM
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CAB's

When you say CAB's, I assume you are meaning Cellulose Acetate Buterate by Eastman Chemical. These can be used to make a water white lacquer (very clear) or any other conventional lacquer. Now widely used in the wood furniture area for clear wood coatings. They can also be used in urethane systems and are used in small volumes to control metal flake orientation.
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Old 02-15-2011, 01:17 PM
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Quote:
Originally Posted by 31Vicky
When you say CAB's, I assume you are meaning Cellulose Acetate Buterate by Eastman Chemical. These can be used to make a water white lacquer (very clear) or any other conventional lacquer. Now widely used in the wood furniture area for clear wood coatings. They can also be used in urethane systems and are used in small volumes to control metal flake orientation.

Yes you are right and they are also used in base coats and used for a number of other things, even some primers.
Always very risky, in SS or clearcoats of made of urethanes, there are a whole lot better additive available today for orientation of metallic or candies, etc.
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Old 02-16-2011, 08:50 AM
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Quote:
Originally Posted by jcclark
How can you get enamel with hardener already mixed?
It would start reacting immediately.
Quote:
Originally Posted by BarryK
You can't.
Ok guys, I had a chat with the guy that sold me the acrylic enamel, I asked him, How come you mixed the hardener with the paint...

he stated it was Synthetic Enamel and it will last for days on the can, if not opened, but will dry once painted, but if the hardener was not mixed then the paint would NEVER dry...

so there is more than one type of Enamel?

Acrylic
Synthetic
Alkyd

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Old 02-16-2011, 08:59 AM
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I didn't think you could even buy synthetic enamel anymore.
and I didn't know you could get a hardener for it.
But that makes sense, it may last for days but you
better use it once opened. you won't be able to store left-overs.
I don't see why you wouldn't buy the hardener seperate though.
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Old 02-16-2011, 09:00 AM
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LOL

Yes there are different enamels and the enamel you got will dry without an activator and was used without activating for years (50 years ago) as long as it has a dryer added. Of course full cure is still about 7-12 months and it will still wrinkle if you try and repair it. AKA dump truck paint.

Good God, I did not know people still mixed this crap and thought you had to go to a box store to find it, in factory pack gallons.
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Old 02-16-2011, 09:11 AM
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Quote:
Originally Posted by jcclark
I don't see why you wouldn't buy the hardener seperate though.
caused I bought 1/32 th of a gallon and the mix ratio its 8:1..

Quote:
Originally Posted by BarryK
Good God, I did not know people still mixed this crap and thought you had to go to a box store to find it, in factory pack gallons.
you just have to know where to buy it, you can get good old nitro lacquer for your car if you want...

I wonder if I could add an Urethane hardener to the nitro lacquer to see if it last longer, it has poor durability but good shine...
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Old 02-16-2011, 10:26 AM
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Quote:
Originally Posted by waterdude
caused I bought 1/32 th of a gallon and the mix ratio its 8:1..


you just have to know where to buy it, you can get good old nitro lacquer for your car if you want...

I wonder if I could add an Urethane hardener to the nitro lacquer to see if it last longer, it has poor durability but good shine...
why dont you just buy decent paint to start with instead of trying to reinvent the wheel?
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Old 02-16-2011, 10:42 AM
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Quote:
Originally Posted by Underground
why dont you just buy decent paint to start with instead of trying to reinvent the wheel?
Where is the Fun on doing that?...
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