The invention is directed to a beta nucleated heterophasic propylene copolymer composition (HPPC).

The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).

The present invention relates to processes and apparatus useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).

A polyethylene composition for producing blow-molded hollow articles, having the following features: 1) density from 0.940 to 0.955 g/cm.sup.3 determined according to ISO 1183 at 23° C.; 2) ratio MIF/MIP from 12 to 30; 3) Mz from 2,000,000 to 4,500,000 g/mol; 4) η.sub.0.02 from 160,000 to 300,000 Pa.Math.s; and 5) long-chain branching index, LCBI, equal to or greater than 0.75.

Phosphorus-containing aqueous polymer dispersions and the use thereof as binders in coating formulations.

Methods for modifying a catalyst system component are disclosed in which a feed mixture containing a fluid and from 1 to 15 wt. % of a catalyst system component is introduced into an inlet of a hydrocyclone, an overflow stream containing from 0.1 to 5 wt. % solids and an underflow stream containing from 10 to 40 wt. % solids are discharged from the hydrocyclone, and the underflow stream is spray dried to form a modified catalyst component. Often, from 4 to 20 wt. % of the catalyst system component in the feed mixture has a particle size of less than or equal to 20 μm, or less than or equal to 10 μm.

Embodiments of polymer compositions and articles comprising such compositions contain at least one multimodal ethylene-based polymer having at least three ethylene-based components, wherein the multimodal ethylene-based polymer exhibits improved toughness.

The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer (RAHECO) and a plastomer (PL) as well as a process for the preparation of said polypropylene composition and a film obtained from said polypropylene composition (C).

The invention relates to a process for the preparation of a multimodal polyolefin polymer in a first polymerization reactor and a second polymerization reactor connected in series, wherein a first polyolefin polymer is prepared in the first polymerization reactor in suspension in the presence of hydrogen and a second polyolefin polymer is prepared in the second polymerization reactor in the presence of a lower concentration of hydrogen than in the first polymerization reactor, the process comprising: a) withdrawing a suspension of solid polyolefin particles in a suspension medium from the first polymerization reactor, wherein the suspension medium comprises hydrogen and a hydrocarbon mixture having an initial boiling point of at least 50° C. and a final boiling point of at most 120° C.; b) feeding the suspension to a flash drum having a pressure controlled by a vacuum pump, wherein the pressure of the flash drum is less than 0.1 MPa; c) vaporizing a part of the suspension medium in the flash drum to obtain a hydrogen-depleted suspension and d) withdrawing the hydrogen-depleted suspension from the flash drum and feeding it to the second polymerization reactor.

The present application relates to a process for producing ethylene polymer in a polymerization process comprising polymerisation of ethylene, optionally with comonomers selected from C.sub.3-C.sub.20-alpha-olefins, preferably selected from C.sub.4-C.sub.10-alpha-olefins, in the presence of a Ziegler-Natta catalyst under polymerisation conditions in at least one polymerisation stage carried out in a solution, slurry or gas-phase reactor or in combinations thereof, wherein the Ziegler-Natta catalyst comprises (A) a solid Ziegler-Natta catalyst component and (B) a cocatalyst, wherein the solid Ziegler-Natta catalyst component (A) comprises a solid support of a Mg compound, a transition metal of Group 4 to 6 and an internal electron donor.