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- W2034984584 abstract "Formaldehyd-S-vinylmercaptale wurden durch Dehydratisieren aus den entsprechenden β-Hydroxyathylmercaptalen dargestellt. Die Monomeren konnten radikalisch (mit AIBN) und kationisch (mit BF3-atherat) polymerisiert werden. Die fur die radikalische Polymerisation ermittelten Polymerisationsgrade (P ∼ 100) sind durch die Reaktionsfahigkeit der -S-CH2-S-Gruppe gegenuber Radikalen von der Initiatorkonzentration weitgehend unabhangig. Acylperoxide konnten als Initiatoren nicht verwendet werden, da die Mercaptalgruppe einen induzierten Peroxidzerfall bedingt. Die kationische Polymerisation gab uber Sulfoniumsalze oligomere Produkte.Formaldehyde-S-vinylmercaptales were synthesized by dehydratisation of the analogous β-hydroxyathyl compounds. The monomers were polymerized by radical (AIBN) and cationic initiators (BF3). In the case of the radically induced polymerization the degree of polymerization (P ∼ 100) was nearly independent of the initiator concentration. This can be explained by the high reactivity of the -S-CH2-S- group towards radicals. Acylperoxides did not initiate the polymerization of the vinylmercaptales, but they were consumed by an induced peroxide-decomposition by the mercaptales. Due to sulfonium-salt formation the cationic polymerization yielded oligomeric products only." @default.
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- W2034984584 date "1966-03-18" @default.
- W2034984584 modified "2023-09-26" @default.
- W2034984584 title "Untersuchung von O-, S- und N-vinylverbindungen. IV. Darstellung und polymerisation von formaldehyd-S-vinylmercaptalen" @default.
- W2034984584 doi "https://doi.org/10.1002/macp.1966.020920109" @default.
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