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Introduction

Polyurethane, also known as PU, has been mass-produced since 1940.
  - It is a thermoplastic or thermoset, (typically reinforced), polyadduct.
- Applications: It is often used in automotive structural members, computer housings, furniture, and packaging foams.
- General properties: It has high impact resistance, dielectric strength, chemical resistance, and abrasion resistance. It can be made into films, solid moldings, or flexible foams. However, it becomes brittle with prolonged outdoor exposure.
- Trade Name: Estane, Pellanthane.
Specific Grades of Polyurethane
Glossary