Formaldehyd-S-vinylmercaptale wurden durch Dehydratisieren aus den entsprechenden P-Hydroxyathylrnercaptalen dargestellt. Die Monomeren konnten radikalisch (mit AIBN) und kationisch (mit BF,-hitherat) polymerisiert werden. Die fiir die radikalische Polymerisation ermittelten Polymerisationsgrade (P
Darstellung und polymerisation von formaldehyd-S-vinylmonothioacetalen. Untersuchungen von O-, S- und N-vinylverbindungen. X.
✍ Scribed by Kroker, Von R. ;Ringsdorf, H.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1969
- Weight
- 714 KB
- Volume
- 121
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
Formaldehyd-S-vinylmonothioacetals were prepared by dehydration of S-P-hydroxyethylmonothioacetals and by dehydrohalogenation of S-P-chlorethylmonothioacetals. The monomers were polymerized radically with AIBN and cationically with BF3-etherate. Formaldehyd-S,O-divinylmonothioacetal could be polymerized selectively through its S-vinylgroup by radical initiation. With cationic initiators both vinylgroups take part in the polymerisation partially forming soluble polymers with cyclic units in the main chain.
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