PROPYLENE POLYMER COMPOSITIONS

Disclosed is a propylene polymer composition comprising (A4) 50-97 wt.% of a propylene polymer which is prepared by polymerizing propylene in the presence of a catalyst comprising (d) a solid titanium component and (e) an organometallic component and has a melt flow rate (MFR) of 0.01-50 g/10 min.,...

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Main Authors IMUTA, JUNICHI, UEDA, TAKASI, KISO, YOSHIHISA, MORIYA, SATORU, SAITO, JUNJI, FUKUOKA, DAISUKE, HASHIMOTO, MIKIO, HIROSE, KEIJI, MIZUNO, AKIRA, KAWASAKI, MASAAKI
Format Patent
LanguageEnglish
French
Published 19.08.2003
Edition7
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:Disclosed is a propylene polymer composition comprising (A4) 50-97 wt.% of a propylene polymer which is prepared by polymerizing propylene in the presence of a catalyst comprising (d) a solid titanium component and (e) an organometallic component and has a melt flow rate (MFR) of 0.01-50 g/10 min., a molecular weight distribution (Mw/Mn) of 4-15 and a crystallinity of not less than 50% and (C) 50-3 wt.% of an ethylene/olefin random copolymer which is prepared by polymerizing 20-80 mol% of ethylene and C3-20.alpha.-olefin in the presence of a catalyst comprising (i) a Group IVB transition metal compound containing a ligand having a cyclopentadienyl skeleton and (ii) an organoaluminum oxy-compound or the like and has an intrinsic viscosity of 1.5-5 dl/g. The propylene polymer composition may be used for producing molded articles.
Bibliography:Application Number: CA19942295388