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Polyurethanes |
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 more information is available for our registered members
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Polyuethanes (PU´s) are one of the most versatile plastics available today, offering a wide range of properties suitable for many end-uses. This is due to the fact that they are segmented polymers which combine the physical properties of the hard and soft segments. PU´s are available in several forms, each with different potential applications.
The majority of PU´s are produced from the reaction of either a polyester or polyether polyol with a diisocyanate and chain extender to give a variety of physical and chemical properties. Polyester polyol based PU´s are derived from dicarboxylic acids, mostly adipic acid, and generally have the following advantages over polyether polyol based PU´s
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Greater oil and solvent resistance |
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Greater oxygen and UV resistance |
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Improved abrasion resistance |
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Increased high temperature performance |
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Improved tear resistance |
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Higher tensile strength |
Typical applications are outlined in the charts below:
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