Method for preparing a polymer

Details Method for preparing a polymer Method for preparing a polymer

C - Chemistry, Metallurgy

08

F

C08F 4/655 (2006.01) C08F 2/12 (2006.01)

Patent

CA 2344861

The present invention relates to a process for preparing a catalyst, a novel polymer and a process for preparing the polymer. In particular, the invention provides a process for preparing a homopolymer and/or copolymer having an irregular particle structure and a melt flow index (MFR 190/15) of from 1.3 g/10 min to g/10 min, a molecular weight distribution M w/M n of from 3 to 30, a bulk density of from 0.05 g/cc to 0.4 g/cc and a particle size of from 5 µm to 300 µm, which comprises polymerizing the monomers in the presence of a mixed catalyst comprising a titanium component and an organic aluminum compound and the presence of a molar mass regulator.

L'invention concerne un procédé de production d'un catalyseur, un nouveau polymère et un procédé de production de ce polymère. L'invention concerne notamment un procédé de production d'un homopolymère et/ou d'un copolymère dont les particules ont une structure irrégulière, et ayant un indice de fusion (MFR 190/15) de 1,3 g/10 min à 10 g/10 min, un rapport de poids moléculaires Mw/Mn de 3 à 30, une densité en vrac de 0,05 g/cc à 0,4 g/cc et une granulométrie de 5 mu m à 300 mu m, les monomères étant polymérisés en présence d'un catalyseur de mélange contenant un constituant titane et un constituant aluminium organique, et d'un régulateur de poids moléculaire.

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