polyisobutylene
noun
poly·isobutylene
¦pälē+
: a polymer of isobutylene varying from a viscous oil to a sticky or rubbery solid
especially
: an elastomer (C4H8)x that is formed at a low temperature (as −100° C) in the presence of a metal halide catalyst (as boron trifluoride) and that cannot be vulcanized unless a small amount of a proportion of isoprene or other diolefin has been incorporated with the isobutylene before polymerization compare diisobutylene, synthetic rubber
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“Polyisobutylene.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/polyisobutylene. Accessed 22 Nov. 2024.
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