For Improved Urethane Elastomers Investigate — QO® Polymeg

One of a Series on Creativity with

For Improved Urethane Elastomers Investigate — QO* Polymeg QO Chemicals

(polytetramethylene ether glycol)

Chemical Advantages for the Elastomer Producer

Urethane elastomers are prepared by either the pre-polymer or one-shot method by reacting Polymeg (a lin­ ear ether glycol) with an excess of diisocyanate to promote cross-linking. The mechanical properties of the elas­ tomers are outstanding. Properties can be tailored tofitspecific applica­ tions. Polymeg in the formulation con­ tributes superior hydrolytic stability. Elastomer manufacturers derive both chemical and physical benefits in the process.

• no unsaturation • no ester linkage • no secondary hydroxyls

Physical Advantages for the Elastomer Producer • low viscosity and easy processing characteristics • low hysteresis loss • excellent moisture resistance • good abrasion resistance • remarkable resiliency • excellent low temperature flexibility • high moisture vapor transmission

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