27-1 Chain-Growth Polymers Isobutylene (2-methylpropene)is an example of a monomer that polymerizes rapidly under cationic conditions Carried out commercially at-80'C using BF3 and water to generate BF3OH-H+catalyst CH3 CH3 BF3OH-H+ H2C=CH 十CH2-CH Isobutylene PolyisobutyleneIsobutylene (2-methylpropene) is an example of a monomer that polymerizes rapidly under cationic conditions ▪ Carried out commercially at ‒ 80 ˚C using BF3 and water to generate BF3OHˉ H+ catalyst 27-1 Chain-Growth Polymers