Some companies say that their clears and paints are superior because it is a polyurethane, not just a urethane. “poly” means more than one, and “urethane” means A synthetic crystalline compound, CO(NH2)OC2H5.

 Therefore a “polyurethane” is a class of synthetic materials made by copolymerizing an isocyanate and a polyhydric resin. Simply put, any two part urethane IS A POLYURETHANE!

However there are three basic types of polyurethanes used in the paint business. They are:

Enamel polyurethanes: Enamel resins cross-linked with a polyisocyanate (usually an IPDI polyisocyanate - a less durable form) which is usually the cheapest and less desirable of all polyurethanes. Usually when people boast that their products are polyurethanes, they are simply cheap enamels crosslinked with a hardener and are NOT all that durable. BEWARE

Acrylic polyurethanes: Very durable coatings, the backbone of the OEM car industry. 100% acrylic polyurethanes have high gloss, and very high gloss retention when exposed to the sun’s UV. They will stay shiny for many years. They have a good to excellent chemical resistance as well. There are many forms of acrylic resins. Some with mediocre long term durability, and some with outstanding 20 plus year durability.

Jinwei chemical car paint/automotive refinish/auto paint/2K industrial paint/ADV paint  are all under acrylic polyurethane system for at least 5 years duability with high gloss,high chroma.