Submitted by keithmelville Fri, 2004-07-09 23:49
An organic polymer used to, eg. make surfboard blanks, formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate (such as MDI, or methylene diphenyl diisocyanate, or TDI, or toluene diisocyanate) in the presence of suitable catalysts and additives.