New chain transfer agents for free radical polymerizations
β Scribed by Gordon F. Meijs; Ezio Rizzardo; Tam P. T. Le
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 513 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0959-8103
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π SIMILAR VOLUMES
The behavior of thiophenol and aliphatic thiols of different structure as chain transfer agents in the polymerization of acrylamide and 1vinyl-2-pyrrolidone in aqueous solution at 25 8C was studied. Addition of millimolar concentrations of thiols to acrylamide polymerization reduced notably the poly
## Abstract This study describes 15 compounds with allylic or pentadienic structure carrying either captodative (cd) carbonβ or heteroatom substituents as potential radical leaving groups in an additionβfragmentation reaction. Their experimental evaluation as __c__hainβ__t__ransfer __a__gents (CTA)
Generic approaches to the synthesis of multi-thiocarbonyl thio compounds are described. A multi-hydroxy core was condensed with either a-bromophenyl acetic acid or 2-mercaptopropanoic acid in the presence of p-toluenesulfonic acid catalyst to afford the corresponding esters in quantitative yield. Tr
## M - w vs conversion for several experiments. Also shown are linear fits to the asymptotically linear portion described by the QSSA.