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Polyurethane
A polymer containing urethane used as plastic, adhesive, paint, rubber, or to form a tough, resistant coating.
Poppy Jasper
An opaque variety of jasper with colors such as brick red, white, brown, and blacks.
They are covered with polyurethane and made from polyester and nickel plated hardware. They remain flexible even in sub zero temperatures.
Copolymers illustrate the point that the repeating unit in a polymer, such as a nylon, polyester or polyurethane, is often made up of two (or more) monomers.
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Chemical properties of polymers ...
By the 1950s, modernist designers took readily to the new plastics, fibreglass and polyurethane.
 See also: Water, Glass, Metal, Point, Crystal
  
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