Method of preparing ethylene polymers by controlled high...

Details Method of preparing ethylene polymers by controlled high... Method of preparing ethylene polymers by controlled high...

C - Chemistry, Metallurgy

08

F

C08F 10/02 (2006.01) C08F 2/00 (2006.01) C08F 4/00 (2006.01)

Patent

CA 2558370

The present invention relates to a method for the radical polymerization or copolymerization of ethylene at high pressures using a hydroxylamine ester as radical initiator. The hydroxylamine esters according to the invention are suitable initiators for the high pressure polymerization of ethylene leading to high molecular weight polyethylenes with narrow molecular weight distributions (Poyldispersity Index PD = 1,2 - 4.5).

La présente invention concerne un procédé destiné à la polymérisation ou à la copolymérisation radicalaire de l'éthylène à des pressions élevées, utilisant un ester d'hydroxylamine comme amorceur radicalaire. Les esters d'hydroxylamine de l'invention sont des amorceurs adaptés pour la polymérisation à haute pression de l'éthylène et permettent d'obtenir des polyéthylènes de masse moléculaire élevée avec des distributions de poids moléculaire étroites (indice de polydispersité PD = 1,2 - 4,5).

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