Polyurethane Thinner contains some solvents that are isobutanol,xylene,ethylene acetate and acetone. Polyurethane Thinner is very important to use paint thinners, which provide the appropriate parameters of paint - flow, potlife, time of drying.
It is enamel which dries very hard and will not rewet. Polyurethane originally was an oil-based varnish with more plasticity than older varnishes.
Polyurethane materials are commonly used as paints and varnishes for finishing coats to protect or seal wood.
In 1937 at Otto Leverkusen, Germany otto bayer was a German industrial chemist at IG Farben and his co-workers made first polyurethanes.
di- and tri-isocyanates and polyols. Are the main ingredients to make a polyurethane Other materials are added to aid processing the polymer..