Definitions for "Polyurethane"
any polymer containing [-NH.CO.O-] linkages; such polymers are much used as the basis of light but rigid foams for packaging (polyurethane foam) and for hard coatings, as on floors.
A polymer known for its flexibility, used in foams, elastomers and fabric coatings. See also Bergundtal Cloth, coated, Entrant, Helly-Tech, Hydropro, Microshed, Omni-Tech, Triple Point Ceramic, Ultrex.
A plastic made of polymerized urethane. Used to contain the inert gas in the Nike AIR system. Also used as a midsole cushioning material; it is stiffer than EVA.
A type of finish used on hardwood to protect it from damage. Polyurethane finishes do not require waxing.
Usually a two-component system that may have a higher solids content than lacquers. Takes somewhat longer to dry than lacquer. A highly durable finish which, as a result, is very difficult to repair.
In finishing usually a two component system that has a higher solids content than lacquers.
A synthetic material frequently used as an alternative to leather in the manufacturing of footwear. PU is light, flexible and durable.
A type of manmade material that can be made to have the look and feel of leather
can cause bronchitis, coughing, and skin and eye problems; also releases toluene diisocyanate, which can produce severe pulmonary effects and sensitization.