C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 327/36 (2006.01) C08F 2/38 (2006.01) C08F 12/08 (2006.01) C08F 20/10 (2006.01) C08F 112/08 (2006.01) C08F 120/14 (2006.01) C08F 120/34 (2006.01) C08F 212/08 (2006.01) C08F 220/14 (2006.01) C08F 220/34 (2006.01) C08F 293/00 (2006.01)
Patent
CA 2337339
This invention relates to the synthesis of dithiocarboxylic acid esters by reaction of bis(thioacyl) disulphides, thioacetals or vinylidene bis(thioether) with free-radicals (optionally in the presence of monomers). The invention also relates to processes for the synthesis of polymers utilising these dithioesters as polymerisation regulators (chain transfer agents) or to the use of bis(thioacyl) disulphides to generate dithioester chain transfer agents in situ.
La présente invention concerne la synthèse d'esters d'acide dithiocarboxylique par réaction de di(thioacyle) bisulfures, de thioacétales ou de vinyldiène di(thioéther) avec des radicaux libres, éventuellement en présence de monomères. L'invention concerne également un procédé permettant de faire la synthèse de polymères en utilisant ces dithioesters comme régulateurs de polymérisation (agents de migration de chaîne) ou l'utilisation de di(thioacyle) bisulfures pour générer in-situ des agents de migration de chaîne dithioester.
Le Tam Phuong
Moad Graeme
Rizzardo Ezio
Thang San Hoa
Commonwealth Scientific And Industrial Research Organisation
Dimock Stratton Llp
E.i. Du Pont de Nemours And Company
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