In the reported experiments, a new telechelic polyisobutylene diol, HO-CH//2-PIB-CH//2-OH, carrying two terminal primary hydroxyl end groups has been prepared from alpha , omega -di(isobutenyl)polyisobutylene, CH//2 equals C(CH//3)-CH//2-PIB-CH//2C(CH//3) equals CH//2, by regioselective hydroboration followed by alkaline hydrogen peroxide oxidation. Infrared (IR) spectra, **1H-NMR analysis of the pure and silylated products, and ultraviolet (UV) spectra of phenylisocyanate-treated diols indicate quantitative yields and two -CH//2OH termini per polyisobutylene chain. The viscosity of HO-CH//2-PIB-CH//2-OH is higher than that of the starting alpha , omega -diolefin. The telechelic diol prepolymer opens new avenues to the synthesis of many new materials, e. g. , polyurethanes.
|Number of pages||15|
|Journal||Journal of polymer science. Part A-1, Polymer chemistry|
|Publication status||Published - Jan 1 1980|
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