Polyisobutylene or PIB

Addition polymer of one of the simplest alkenes, isobutylene

Polyisobutylene is one of the most widely used synthetic elastomers in the world.

PIB is one of the polyolefins, a family of polymers containing only carbon and hydrogen.

One interesting property of PIB is its barrier to oxygen transport which is why

its used as the inner liner in tubeless tires.

For more on PIB, go here.

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