New N,N-amino-diphosphonate-containing methacrylic derivatives, their syntheses and radical copolymerizations with MMA

International audienceHydroxy-amino-diphosphonates HO–Cn–NH2, with 2 6 n 6 11, have been successfully synthesized via the Kabachnick-Field reaction at 70 C with high yields. These hydroxy compounds are then reacted with methacryloyl chloride to lead to novel amino-diphosphonate methacrylates MACnNP2 (with 2 6 n 6 11). These highly pure methacrylate monomers were obtained with yields higher than 75%. Radical copolymerizations of MACnNP2 (with 2 6 n 6 11) with MMA have been conducted and the r1 values (related to MACnNP2) are in the range of 1.1–1.3, and r2 values (related to MMA) about 0.8; this shows that the diphosphonate groups are statistically bonded to the methacrylic backbone

Telechelic Oligomers and Macromonomers by Radical Techniques

International audienceThis review summarizes nearly 400 references (since 1990) intended to highlight directions on the synthesis of telechelic oligomers and macromonomers by radical techniques. This review first takes into account the recent developments in further conventional radical polymerizations, such as dead-end polymerization and also telomerization reactions. Among all the conventional radical polymerizations, addition–fragmentation transfer (AFT) polymerization realized a real breakthrough for the synthesis of telechelic oligomers and especially for macromonomers by coupling AFT with catalytic chain transfer. Then, surveys concerning telechelic oligomers and macromonomers prepared by living radical polymerizations are mentioned. Atom transfer radical polymerization, nitroxide-mediated polymerization, reversible addition–fragmentation chain transfer polymerization and also iodine transfer polymerization allow for accurate control of chain-end functionality, either a functional group or a double bond. Novel reactions like radical coupling of oligomers previously obtained by living radical polymerizations are enhanced

Recent advances in the synthesis of functionalized fluorocopolymers as engineering materials

International audienc