Random propylene polymer composition and use in extrusion blow moulding

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12234351
APP PUB NO 20220073718A1
SERIAL NO

17423407

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Abstract

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The present invention is directed to a propylene polymer composition comprising at least one propylene copolymer (C-PP), and an α-nucleating agent (NU), wherein the propylene copolymer (C-PP) comprises two propylene copolymer fractions (PP1) and (PP2), wherein propylene copolymer fraction (PP1) is contained in the propylene copolymer (C-PP) in an amount of 30 to 70 wt. % and the propylene copolymer fraction (PP2) is contained in the propylene copolymer (C-PP) in an amount of 70 to 30 wt. %, the comonomer content of propylene copolymer fraction (PP1) is in the range of 0.5 to 2.5 wt.-% and the comonomer content of the propylene copolymer fraction (PP1) is lower compared to the comonomer content of the propylene copolymer fraction (PP2), and the propylene polymer composition has (a) a melt flow rate MFR2 (230° C.) measured according to according to ISO 1133 of 1 to 5 g/10 min., and (b) a comonomer content of 4.0 to 8.0 wt. %, the comonomer(s) being ethylene and/or at least one C4 to C12 α-olefin. The above propylene polymer composition has improved impact and optical properties. The invention further provides a method of producing the above propylene polymer composition and an extrusion blow molded article comprising the above propylene polymer composition.

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Patent Owner(s)

  • BOREALIS AG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Berger, Friedrich Linz, AT 49 189
Friedrich, Karlheinz Schwechat, AT 13 69
Gahleitner, Markus Linz, AT 250 1001
Wang, Jingbo Linz, AT 261 939

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