摘要:
The present invention relates to a copolymer of 1,3-butadiene and ethylene, comprising a copolymer chain A carrying a functional group B chosen from the group consisting of functional groups B1 and B2, the copolymer chain A being a copolymer chain comprising ethylene units, butadiene units and units having a cyclic structure chosen from the units 1,2-cyclohexanediyl and 1,4-cyclohexanediyl, B1 being chosen from the group consisting of N(SiMe 3 ) 2 ; N(SiMe 2 CH 2 CH 2 SiMe 2 ); para-C 6 H 4 (NMe 2 ); para-C 6 H 4 (OMe); para-C 6 H 4 (N(SiMe 3 ) 2 ); ortho-CH 2 -C 6 H 4 NMe 2 ; ortho-CH 2 -C 6 H 4 OMe; C 6 F 5 ; C 3 F 7 ; C 6 F 13 ; CH(OCH 2 CH 2 O); and B2 being a functional group deriving from B1. A copolymer of this kind is synthesized using a transfer agent carrying the functional group B1 and a carbon-metal bond, the metal being an alkaline earth metal, zinc or aluminium.
摘要:
The present invention relates to a compound of formula (II) and its use in the preparation of a functional or telechelic polyolefin: Y((CH 2 ) P -B') m (II) m = 2 or 3; Y being and alkaline earth or zinc when m = 2, Y being aluminium when m = 3; B' being selected from the group comprising N(SiMe 3 ) 2 ; N(SiMe 2 CH 2 CH 2 SiMe 2 ); C 6 F 5 ; C 3 F 7 ; C 6 F 13 ; para-C 6 H 4 -NMe 2 ; para-C 6 H 4 -0-Me; para-C 6 H 4 -N(SiMe 3 ) 2 ; and CH(OCH 2 CH 2 0); p being an integer between 0 and 50.