Butene-1 copolymers and process for their preparation

Details Butene-1 copolymers and process for their preparation Butene-1 copolymers and process for their preparation

C - Chemistry, Metallurgy

08

F

C08F 210/08 (2006.01) C08F 4/656 (2006.01) C08F 10/00 (2006.01) C08L 23/02 (2006.01)

Patent

CA 2506650

The present invention relates to butene-1 copolymers containing up to 40% by mol of ethylene and/or propylene derived characterized by the following properties: d) Product of the reactivity ratios rl.cndot.r2<=2; e) Content of butene-1 units in form of isotactic pentads (mmmm)>98%; and f) absence of 4,1 insertions of butene units.

La présente invention concerne des copolymères butène-1 contenant jusqu'à 40 % par mole de dérivé d'éthylène et/ou de propylène caractérisés par les propriétés suivantes: (d) produit des rapports de réactivité rl r2=2, (e) contenu d'unités de butène-1 sous forme de blocs isotactiques (mmmm)>98 % et, (f) absence d'insertions 4, 1 des unités butène.

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