Structure of Urethane
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Urethane

Urethane 1. A polymer containing a urethane linkage. 2. Any organic chemical compound contaning a urethane functional group (or linkage). 3. The specific compound (NH2*COOC2H5). This ethyl ester is a white crystalline substance produced by the action of ammonia on ethyl carbonate or by heating urea nitrate and ethyl alcohol. It is used as a hypnotic, antipyretic, and antispasmodic. more...

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Generally, a urethane is an ester of a carbamic acid (RNHCOOQ, where R and Q represent many different organic compounds). Many can be created by an isocyanate reaction with a hydroxyl group of an alcohol (or other hydroxy containing compound) according to the following formula:

Although this reaction had been known for some decades, it was not until 1937 that Otto Bayer discovered how to make the very useful polyurethane plastics out of polyisocyanate and polyol (a molecule with multiple hydroxyl groups), (see Polyurethane). There are many other more specialized ways to make urethanes.

Urethane technology was brought to America in 1953 by Jean-Pierre Abbat and Dr. Fritz Hartmann.

Urethanes are used in pharmaceuticals, (bio)chemical analysis and plastics.

Urethane is also widely used in skateboard and in-line skate wheel production, effectively replacing the clay wheel used before that.

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Advances in Urethane: Science & Technology, Volume XIII $94.95 Advances in Urethane Ionomers $69.54
Mixing it up.(Plastics Machinery/Processing) : An article from: Plastics Engineering $5.95 Running on Trac: Urethane parts help exercise equipment manufacturer meet prototype production deadlines. (Just One More). : An article from: Designfax $5.95
Keeping Out the Chill or the Heat, the Moisture and the Noise.(insulation installation tips) : An article from: Builder $5.95 Transport Modeling and Thermophysical Properties of Cellular Poly(urethane-isocyanurat e). : An article from: Polymer Engineering and Science $5.95
Epoxy, acrylic, and urethane adhesives: structural adhesives offer high strength, creep resistance, and reduced weight as reasons for replacing mechanical ... article from: Advanced Materials & Processes $5.95 Urethane curatives: product lines reviewed. (1991-1992 Manufacturing Handbook and Buyers' Guide) : An article from: Plastics Technology $5.95
URETHANE CURATIVES.(Brief Article) : An article from: Plastics Technology $5.95 PMA/CUMA plan joint fall meeting. (Meetings).(Polyurethane Manufacturers Association)(Canadian Urethane Manufacturers Association)(Brief Article) : An article from: Rubber World $5.95

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