Results for: Polyurethane

What are polyurethanes?

A polyurethane is any polymer consisting of a chain of organic  units joined by urethane links. It is widely used in flexible and  rigid foams, durable elastomers and high p (MORE)

How is polyurethane made?

Polyurethane chemistry is complex, but the basics are relatively  easy to understand. Polyurethanes are formed by reacting a polyol  with a diisocyanate or a polymeric isocy (MORE)

What is the polyurethane?

  It's a type of plastic materials , chemically it's simple a polymer consist of billions of repeating unites is called Urethane which is an ester of Carbamic Acid with an (MORE)

What to do with old polyurethane?

Polyurethane are recyclable, therefore, old, used or spent polyurethane should be sorted and recycled. we need to bear in mind that it takes more than 100years for polyurethan (MORE)
In Science

What is Polyurethane Coating?

Polyurethane coatings provide a thin film, high gloss finish with exceptional weathering performance characteristics. This coating is used in virtually all industrial markets (MORE)

Is polyurethane waterproof?

Polyurethane is considered very water resistant. The degree to which the polyurethane imparts waterproofing to to something it is applied to depends on the exact chemistry use (MORE)

What is the monomer of polyurethane?

Polyurethane polymers are nearly alwys made from isocyanate monomers and polyols - organic polymers with OH groups attached.
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In Science

Where does polyurethane come from?

From a plastics factory. They get it by reacting a polyol with a diisocyanate in the presence of (at least!) a catalyst.
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