Abstract
(p-tert-Butyl-o,o-dimethylphenyl)acetylene (BDMPA) polymerized in high yields in the presence of W and Mo catalysts. Especially the W(CO) 6 -CCl 4 -hν catalyst quantitatively produced a polymer totally soluble in toluene and chloroform. The weight-average molecular weight of this polymer exceeded 2 x 10 6 . Poly(BDMPA) was a dark brown solid, and had alternating double bonds along the main chain. The weight loss of the polymer in air occurred only above 300°C, indicating a fairly high thermal stability. A free-standing film could be fabricated by solution casting. The electrical conductivity of the polymer at 25°C was 1 X 10 -l3 S cm -l . The oxygen permeability coefficient and the separation factor of O 2 vs. N 2 of the polymer at 25°C were 67 barrers and 3.2, respectively.
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