Polimeri vinilici otticamente attivi XXI. Determinazione del tipo e del grado di stereoregolarità in alcuni polivinilchetoni

Using NMR. spectroscopy it has been shown that the stereoregularity in the polyvinylketones prepared with Zn(i-C₄H₉)₂ or LiAlH₄ as initiator is of the isotactic type. A surprisingly high stereoregularity (% isotactic diads > 95) has been observed not only in polymethylvinylketone but also in poly(S)-1-methyl-propyl]vinylketone.