polyurethane

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polyurethane

, polyurethan
a class of synthetic materials made by copolymerizing an isocyanate and a polyhydric alcohol and commonly used as a foam (polyurethane foam) for insulation and packing, as fibres and hard inert coatings, and in a flexible form (polyurethane rubber) for diaphragms and seals

Polyurethane

A group of plastics used mainly as a light insulating material in the form of flexible or rigid foam and as a sealant.