Abstract: The present invention relates to a process for removing polymer material from a gas-solids olefin polymerization reactor wherein the gas-solids olefin polymerization reactor is connected to the top part of an outlet vessel via a feed pipe wherein the powder surface of discharged polymer material and the barrier gas injection point are situated in the outlet vessel as such to fulfill the following criteria: R?=X/Y?2.0; and R?=X/D?1.

Abstract: The present invention deals with a process for producing a multimodal ethylene polymer composition suitable for producing films by blow moulding and comprising the steps of (i) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a first polymerisation step in the presence of a silica supported Ziegler-Natta catalyst to produce a first ethylene homo- or copolymer (PEI) having a density of from 940 to 980 kg/m3 and a melt flow rate MFR2 of from 2 to 1000 g/10 min, provided that if the first ethylene homo- or copolymer (PE1) is a copolymer, MFR2 thereof is in the range of 2 to 100 g/10 min; (ii) homopolymerising ethylene or copolymerising ethylene and an alpha-olefin comonomer in a second polymerisation step in the presence of the first ethylene homo- or copolymer to produce a first ethylene polymer mixture (PEM1) comprising the first ethylene homo- or copolymer and a second ethylene homo- or copolymer (PE2), said first ethylene polymer mixture having a density of from 940 to 98

Abstract: The present invention is directed to a new cable having at least one insulation layer, to a process for producing such cable as well as to the use of a polymeric-nucleating agent for increasing the crystallization temperature of a polymer composition being part of an insulation layer of such a cable and the use of such a cable as communication cable and/or electrical cable.

Abstract: The present invention is directed to a polypropylene composition (P) comprising a first random propylene copolymer (A) and a second random propylene copolymer (B), said first random propylene copolymer (A) and said second random propylene copolymer (B) being copolymers of propylene and 1-hexene. Further, the present invention is directed to a blown film comprising said polypropylene composition (P).

Abstract: A process of making a cable having a conductor surrounded by at least one crosslinkable layer having a polymer composition. The polymer composition has (a) a polyolefin bearing hydrolysable silane groups and a silanol condensation catalyst compound.

Abstract: The present invention is directed to a polypropylene composition (P) comprising a bimodal copolymer of propylene and 1-hexene prepared in the presence of a metallocene catalyst, said bimodal copolymer having a melt flow rate MFR2 in the range of 4.0 to 20.0 g/10 min. Further, the present invention is directed to a method for preparing the copolymer (C) and an article comprising said polypropylene composition (P).

Abstract: The present invention relates to silane crosslinking catalyst comprising: —75 to 85 wt.-% of an olefin acrylate interpolymer and—15 to 25 wt.-% of a hindered amine light stabilizer (HALS) having a number average molecular weight Mn of 1500 to 4000 g/mol; and—optionally up to 5 wt.-% wax, wherein the silane crosslinking catalyst is free of tin, carboxylic acid(s) and sulphonic acid(s), all weight percentages with respect to the total weight of the silane crosslinking catalyst.

Abstract: The present invention relates to a process for removing hydrocarbons comprising the steps of: (A) passing a stream of a solution into a separator wherein a liquid phase comprising polymer and a vapor phase coexist; (B) withdrawing a vapor stream and a concentrated solution stream from the separator; (C) passing at least a part of the vapour stream into a first fractionator; (D) withdrawing a first overhead stream and a first bottom stream from the first fractionator; (E) passing the first bottom stream to a second fractionator; (F) withdrawing a second overhead stream and a second bottom stream from the second fractionator; characterized in that at least a part of the second overhead stream is withdrawn as a purge stream.

Abstract: The present invention relates to a process and apparatus for withdrawing polymer agglomerates from a fluidised bed polymerisation reactor, the polymerisation reactor comprising a bottom zone having a generally conical shape and no fluidisation grid. The agglomerates are withdrawn by using an agglomerate trap below the bottom zone. A value of a process variable indicative of the content of agglomerates in the agglomerate trap is measured and the opening time of the valves transferring polymer to and from the agglomerate trap is adjusted based on the measured value.

Abstract: The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer and an inorganic filler, the use of said polypropylene composition (C) for the production of a foamed article and a foamed article obtained from said polypropylene composition (C).

Abstract: The present invention is directed to propylene composition applicable for high flow automotive exterior compounds with excellent surface appearance, said composition comprising a modified polypropylene composition and an inorganic filler.

Abstract: The present invention is concerned with a process for polymerizing ethylene or copolymerizing ethylene and at least one alpha-olefin comonomer in the presence of a supported polymerization catalyst in a multi-stage process in which the last polymerization stage is a gas phase reactor, the use of said process for reducing particle carry-over in the last polymerization stage and the use of a supported polymerization catalyst with a certain median particle size to polymerize an ethylene homo- or copolymer in said multi-stage process with a span of its particle size distribution which can be predicted from the median particle size of the catalyst.

Abstract: Moulded articles comprising a polypropylene homopolymer with rather high melt flow rate, high stiffness, improved optical properties and an advantageous balance between stiffness and optical properties.

Abstract: The present invention relates to the use of a at least a part of a polymer layer comprising a composition (Co), the composition comprising a low density polyethylene (LDPE) produced in a tubular reactor which composition is free of additives as a thermoplastic surface of an extrusion coated structure comprising the polymer layer and a first substrate for preparing heat-sealed articles by heat-sealing of said thermoplastic surface with a second substrate; and The use of a at least a part of a polymer layer comprising a composition (Co), the composition comprising a low density polyethylene (LDPE) having a melt flow rate (MFR) according to ISO 1133 (190° C., 2.16 kg) higher than 3.

Abstract: The present invention is directed to a heterophasic polypropylene composition having an improved balance of desirable properties, i.e. high stiffness, high toughness, and high transparency. The heterophasic polypropylene composition of the present invention comprises 60.0 to 95.0 wt % of a crystalline propylene homopolymer with a melting temperature Tm1 measured by differential scanning calorimetry of higher than 155° C., 5.0 to 20.0 wt % of an elastomeric ethylene-propylene rubber, and at least one polymeric nucleating agent, wherein the crystalline propylene homopolymer (H-PP) and the elastomeric ethylene-propylene rubber (EPR) have been produced in the presence of a single-site catalyst, wherein the heterophasic polypropylene composition is characterized by a soluble fraction determined in 1,2,4-trichlorobenzene at 40° C. in the range of 5.0 to 20.0 wt %, and wherein the soluble fraction has an ethylene in content in the range of 12.0 to 40.0 wt %.

Abstract: The present invention relates to a polymer composition, to a use of the polymer composition for producing an article, to an article comprising the polymer composition, preferably to an article which comprises a layer element comprising at least one layer which comprises the polymer composition.

Abstract: The present invention is directed to a polypropylene composition (C) comprising a heterophasic propylene copolymer (RAHECO) and a propylene homopolymer (H-PP) as well as a process for the preparation of said polypropylene composition and a film obtained from said polypropylene composition (C).

Abstract: 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.

Abstract: The present invention is directed to a polypropylene composition (C) a melt flow rate MFR2 (230° C.) determined according to ISO 1133 in the range of 15 to 40 g/ 10 min, the use of said polypropylene composition (C) for the production of a foamed article and a foamed article comprising said polypropylene composition (C).

Abstract: A cross-linked polymer composition includes a cross-linked polyolefin. Peroxide in an amount of less than 35 mmol —O—O—/kg polymer composition may be included in the polymer composition prior to crosslinking the polyolefin. Suitable polyolefins that can be cross-linked in the polymer composition include an unsaturated LDPE homopolymer and an unsaturated LDPE copolymer of ethylene with one or more comonomers. Such unsaturated LDPE polymer can contain vinyl groups, and the total amount of vinyl groups present in the unsaturated LDPE can be higher than 0.05/1000 carbon atoms. The cross-linked polymer composition can be used, for example, in producing a cross-linkable and cross-linked article such as a cross-linkable and cross-linked direct current (DC) or other type of power cable.