FIELD: chemistry.
SUBSTANCE: invention relates to polypropylene composition intended for production of the cast articles, in particular, to the food products packaging. Composition comprises the propylene copolymer with bimodal comonomer distribution having melt flow rate MFR2 (230 °C) in the range of 10 g/10 minutes to 100 g/10 min, and nucleating agent. Propylene copolymer contains from 4.4 to 7.3 mol% of comonomer selected from ethylene, C4-C12 α-olefin and mixtures thereof. At that, the propylene copolymer first fraction (R-PP1) contains from 1.5 to 3.0 mole% of comonomer, and the propylene copolymer second fraction (R-PP2) comonomer content is higher than the propylene copolymer first fraction comonomer content.
EFFECT: polypropylene composition of the invention has good flowability and high crystallization temperature, such properties are greatly reducing the injection molding articles production cycle time.
13 cl, 2 tbl
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