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- W1567130552 abstract "The possibility to functionalize poly(2-methylpropene) (PIB) by direct synthesis with functions containing nitrogen derived from the group of pseudohalogens, is demonstrated. Polymerization by cationic polyaddition of 2-methylpropene using a suitable cocatalyst, here hydrazoic acid HN3 or hydrocyanic acid HCN, in the presence of titanium tetrachloride is carried out in methylene dichloride. The highest functionalization efficiency (f = 0,7) is obtained for a mole ratio catalyst-to-cocatalyst close to one. Part of the macromolecules is found to contain twice as many tert-butyl groups as internal unsaturations. This finding is explained by the occurrence of some dimerization of macromonomers, which are formed by a PIB backbone terminated by one disubstituted unsaturation." @default.
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- W1567130552 date "1992-10-01" @default.
- W1567130552 modified "2023-10-14" @default.
- W1567130552 doi "https://doi.org/10.1002/macp.1992.021931013" @default.
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