The application provides a bimodal polypropylene random copolymer with good response to nucleating agents, increased crystallization temperature, good mechanical and optical properties, as well as low amounts of extractables and good processability in the sense of high Melt Flow Rate. The present invention further relates to articles made thereof, and the use of the bimodal polypropylene random copolymer for specific applications. It also relates to a process for the preparation of said bimodal polypropylene random copolymer.

Disclosed herein are ethylene-based polymers generally characterized by a melt index of less than 1 g/10 min, a density from 0.93 to 0.965 g/cm.sup.3, a CY-a parameter at 190° C. of less than 0.2, an average number of short chain branches per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 40,000 to 60,000 g/mol, and an average number of long chain branches per 1000 total carbon atoms of the polymer in a molecular weight range of 400,000 to 600,000 g/mol that is greater than that in a molecular weight range of 4,000,000 to 6,000,000 g/mol. The ethylene polymers can be used to fabricate pipes, blown films, and blow molded products, and the ethylene polymers can be produced with a dual catalyst system containing a single atom bridged or two carbon atom bridged metallocene compound with two indenyl groups or an indenyl group and a cyclopentadienyl group, and a single atom bridged metallocene compound with a fluorenyl group and a cyclopentadienyl group with an alkenyl substituent.

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

The present invention relates to a polyethylene composition comprising, a base resin (A) comprising a copolymer of ethylene and at least one comonomer selected from alpha-olefins having from three to twelve carbon atoms, wherein the ethylene copolymer comprises a low molecular weight component (A-1) and a high molecular weight component (A-2) with the low molecular weight component (A-1) having a lower weight average molecular weight than the high molecular weight component (A-2), (B) carbon black in an amount of 1.0 to 10 wt % based on the total amount of the polyethylene composition, and (C) optional further additives other than carbon black.

The invention relates to a new soft heterophasic propylene copolymer with increased melting temperature, improved stiffness and optical properties, as well as the process by which the heterophasic propylene copolymer is produced. Further the present invention is directed to articles made of the inventive heterophasic propylene copolymer, particularly to blow moulded, extrusion blow moulded or injection moulded articles and their use in e.g. medical, pharmaceutical or alimentary applications.

A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) density from 0.948 to 0.952 g/cm.sup.3 determined according to ISO 1183-1 at 23 C.; 2) ratio MIF/MIP from 12 to 25; 3) MIF from 18 to 40 g/10 min.; 4) Mz equal to or greater than 1,200,000 g/mol; 5) .sub.0.02 from 35,000 to 55,000 Pa.Math.s; 6) long-chain branching index, LCBI, equal to or greater than 0.55; and 7) ratio (.sub.0.02/1000)/LCBI from 55 to 75.

A bimodal linear polyethylene composition, products made therefrom, methods of making and using same, and articles containing same.

Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.

Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C.sub.3-C.sub.12 comonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C.sub.3-C.sub.12 comonomer catalyzed by one of the three catalysts.

According to at least one embodiment of the present disclosure, polyethylene formulations and modified polyethylene compositions are provided. Embodiments of the polyethylene formulation may include a free radical generator; and a multimodal polyethylene composition. The multimodal polyethylene composition may include a peak in a temperature range of 95 C. to 120 C. in the elution profile via improved comonomer composition distribution (iCCD), wherein a polyethylene fraction area is an area in the elution profile beneath the peak of the polyethylene fraction between 95 C. and 120 C., and wherein the polyethylene fraction area comprises at least 20% of the total area of the elution profile and a molecular weight (M.sub.w) of less than 80,000 g/mol in the temperature range of from 95 C. to 120 C. on an elution profile via iCCD. The modified polyethylene composition may be the reaction product of the free radical generator and the multimodal polyethylene composition.