POLYURETHANE

Definition

A synthetic polymer containing the group –NH–CO–O– linking the monomers. Polyurethanes are made by condensation of isocyanates (–NCO) with alcohols.

Definition

polyurethane: A polymer containingthe urethane group –NH·CO·O–,prepared by reacting di-isocyanateswith appropriate diols or triols. Awide range of polyurethanes can bemade, and they are used in adhesives,durable paints and varnishes,plastics, and rubbers. Addition ofwater to the polyurethane plasticsturns them into foams.

Agricultural Uses

Polyurethane is a polymer containing the urethane group. Polyurethanes find a wide variety of applications in many industries. In fact, mollifiable polymers (hydrophobic) like bitumen, polyvinyl acetate and polyurethane form a major class of soil conditioners. Polyurethane resins and the foams are also used as florists' mounting media or plant growth media.