This clear polyurethane finish spray i used on top of dried white paint turned amber within a week. Therefore you can purchase epoxy enamels polyurethane enamels and most frequently alkyd andor acrylic enamels.
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Auto manufacturers and painters have switched over to urethane paint however as it provides numerous practical advantages over acrylic enamel for most auto body.
Clear enamel vs polyurethane. Also i saw someplace that the primer needs to be compatable with the top coat. I need something easy to apply. Its good for bookcases desks side tables and picture frames anything that.
I have heard that a lot of people have had good luck with rustoleum industrial enamel as well as interlux brightside polyurethane. No clear coat required. If your doing a panel at a time the epoxy will protect the metal till your ready for paint.
Urethane a paint primer. Without realizing it we frequently use items made out of urethane or polyurethane and most of us are not even painters. As with shellac water based polyurethane wont hold up well to heat and chemicals.
For more information about the toxicity of polyurethane please refer to this post. Traditional polyurethane is an amber colored plastic resin combined with drying oils and solvents. Polyurethane is typically applied to hardwood floors that receive a high amount of traffic.
Weve had so many questions about urethane vs polyurethane we decided it was time to share a little on the subject from the polymer chemistry and the historical marketing side of the automotive aftermarket industry. As the oil cures it creates a finish thats more flexible than acrylic to better withstand contractions and expansions of wood movement. It goes on clear without adding a slight color that oil based versions can and it dries much faster.
Urethane and acrylic enamel paints are most commonly used for auto body finishes. I picked up a can of the stuff after staring at all the various polyurethanes that werent clear at the home depot. The term urethane and polyurethane has been thrown around a lot in the industry and used by sales marketing professionals to present hellip.
There are many different types of polyurethane but most of the newer blends are non toxic. The question is will your new paint play well with the old paint. Im aware of nitrocellulose and some paints fade but over time.
Typically we refer to high gloss smooth decorative top coats as enamels. Water based polyurethane is popular because of its low odor and low toxicity. Its best to strip it down to bare metal then epoxy.
Because polyurethane is stiff and hard they are mostly used in solid materials such as foot wears foams etc. Many may believe that the only real difference between the two are the compounds that make up polyurethanes if we even think as deeply as that on the subject. When a painter uses the word enamel he is usually referring to a high gloss smooth decorative alkyd andor acrylic top coat.
Acrylic enamel is the more traditional option that was used on older cars.
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