C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 23/18 (2006.01) C08F 4/642 (2006.01) C08F 10/08 (2006.01) C08F 210/08 (2006.01) C08L 23/20 (2006.01)
Patent
CA 2573975
A 1-butene polymer composition comprising: a) from 5% by weight to 95% by weight of an atactic 1-butene-based polymer, having the following features: - distribution of molecular weight Mw/Mn equal to or lower than 4; - rr triads, measured by 13C-NMR comprised between 5% and 50%; - no enthalpy of fusion detectable at a differential scanning calorimeter (DSC); - intrinsic viscosity (IV) measured in tetrahydronaphtalene (THN) at 135~C comprised between 0.85 dl/g and 5 dl/g; and - infrared crystallinity lower than 0.5%; b) from 5% by weight to 95% by weight of an isotactic 1-butene-based polymer having the following features: - isotactic pentads (mmmm) measured by 13C-NMR, higher than 80%; melting point higher than 80~C; and - intrinsic viscosity (IV) measured in tetrahydronaphtalene (THN) at 135~C comprised between 0.1 dl/g and 5 dl/g.
L'invention concerne une composition de polymères de 1-butène qui renferme: a) en poids, entre 5 % et 95 % de polymère atactique de 1-butène caractérisé comme suit: - distribution de poids moléculaire Mw/Mn inférieure ou égale à 4; - rr triades mesurées par13C-NMR, entre 5 % et 50 %; - aucune enthalpie de fusion détectable sur calorimètre à exploration différentielle; - viscosité intrinsèque (IV) mesurée en tétrahydronaphtalène (THN) à 135 °C, entre 0,85 dl/g et 5 dl/g; et cristallinité infrarouge inférieure à 0,5 %; b) en poids, entre 5 % et 95 % de polymère atactique de 1-butène caractérisé comme suit: - pentades isotactiques (mmmm) mesurées par 13C-NMR, plus de 80 %; point de fusion supérieur à 80 °C; et- viscosité intrinsèque (IV) mesurée en tétrahydronaphtalène (THN) à 135 °C, entre 0,1 dl/g et 5 dl/g.
Moscardi Gilberto
Pelliconi Anteo
Resconi Luigi
Spataro Stefano
Basell Polyolefine Gmbh
Mccarthy Tetrault Llp
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