Can you mix gloss acrylic paint with polyurethane.

Are you asking if you can use the paint then the poly, or if you can literally mix the two together?

Polyurethane is oil based, Acrylic is water based , I would think they would go together like oil and water.. in other words , not well. If you want to paint using the Acrylic, let it dry and then coat with polyurethane , then go for it, it's fine. If for some reason you need to mix it, I would try polycrylic which is a water based form of poly.

Depends on your desired result. Literally, you can do anything you want.

I would not mix the two together to save time and skip a step if that is what you're asking . That sounds like a recipe for a goopy disaster .

There are primers that are polyurethane based. What you are talking about is fortified paint.

Waterborne acrylic or polyurethane can be mixed with latex paint for a tough, durable finish that won't go gummy and sticky in humid summer weather like plain latex paint does. The finish will be the same color as the latex paint.

Stir both the waterborne finish and the latex paint thoroughly, then mix them in ratio of 2 parts paint to 1 part waterborne finish. Apply with a brush or trim roller. When dry, the first coat will be translucent and the second coat will give an opaque finish like straight paint. If you increase the amount of waterborne finish until the mix is 50:50, the final finish will be harder and more durable, but it will take more coats to become opaque and tends to be hard to work with.

This fortified paint is very versatile. If you use gloss paint and gloss waterborne finish, you can get the rich look of sprayed lacquer, with easier application and far less exposure to harmful fumes. Semi-gloss or flat mixtures can be an excellent choice for the interior of a set of cabinets.

Easier just to paint what you want then seal with at least three coats of a water base polyurethane.