Polyurethane
Polyurethane
Polyurethane (pronunciation: /ˌpɒliˈjʊərəθeɪn/) is a type of polymer that is used in a wide variety of applications due to its versatility and durability.
Etymology
The term "polyurethane" is derived from the Greek words "poly" meaning many, and "urethane", a compound formed from carbamic acid and alcohol.
Description
Polyurethanes are formed by reacting a polyol (an alcohol with more than two reactive hydroxyl groups per molecule) with a diisocyanate or a polymeric isocyanate in the presence of suitable catalysts and additives. The properties of a polyurethane are greatly influenced by the types of isocyanates and polyols used to make it.
Applications
Polyurethane is used in many industries and can be found in a variety of products, including foams for furniture and bedding, insulation materials, surface coatings, and adhesives. It is also used in the manufacture of elastomers, sealants, and plastics.
Related Terms
- Polymer
- Carbamic acid
- Alcohol
- Foam
- Furniture
- Bedding
- Insulation
- Surface coating
- Adhesive
- Elastomer
- Sealant
- Plastic
External links
- Medical encyclopedia article on Polyurethane
- Wikipedia's article - Polyurethane
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