Abstract: A melt-blown web contains melt-blown fibers obtained by a) melt-mixing a propylene-based polymer, a first peroxide and a second peroxide at temperatures between 180° C. and 240° C., preferably between 200° C. and 220° C., wherein the first peroxide has a half-life time of 1 hour at a first temperature T1/2 1 and the second peroxide has a half-life time of 1 hour at a second temperature T1/2 2, wherein T1/2 2 is higher than T1/2 1 and b) processing the composition obtained by step a) by a melt-blown process at temperatures between 240° C. and 300° C., preferably between 245° C. and 280° C., to provide the melt-blown fibers.

Abstract: Polymer blends, methods of making the polymer blends, and articles of manufacture that include the polymer blends are described. A polymer blend can include a high density polyethylene (HDPE) polymer and a random block copolymer. The random block copolymer can include two different saturated alkane blocks between aromatic blocks (e.g., two styrenic blocks).

Abstract: The invention relates to a composition obtained by the adsorption of a liquid peroxide onto granules comprising an antioxidant and an acid scavenger, for example wherein the adsorption of the liquid peroxide onto the granules is performed by a process which can be performed at room temperature (23° C.) and the process does not require heating.

Abstract: The invention relates to a composition obtained by the adsorption of a liquid peroxide onto granules comprising an antioxidant and an acid scavenger, for example wherein the adsorption of the liquid peroxide onto the granules is performed by a process which can be performed at room temperature (23° C.) and the process does not require heating.

Abstract: The invention relates to a composition comprising (A) a propylene-based polymer, (B) a C10-C30 aliphatic carboxylic acid amide and (C) a homopolymer or a copolymer of butene-1, wherein the amount of (B) is 1000 to 5000 ppm based on the total composition and the amount of (C) is 5000 to 50000 ppm based on the total composition.

Abstract: The invention relates to a composition comprising: (A) a random copolymer of propylene and a comonomer, wherein the comonomer is ethylene and/or an ?-olefin having 4 to 8 carbon atoms, wherein the amount of propylene-derived units is 90 to 99 wt % and the amount of comonomer-derived units is 1.

Abstract: Polymer blends, methods of making the polymer blends, and articles of manufacture that include the polymer blends are described. A polymer blend can include a high density polyethylene (HDPE) polymer and a random block copolymer. The random block copolymer can include two different saturated alkane blocks between aromatic blocks (e.g., two styrenic blocks).

Abstract: The invention relates to a biaxially oriented polypropylene (BOPP) film comprising a propylene homopolymer or propylene-ethylene copolymer having an ethylene content of at most 1.0 wt % based on the propylene-ethylene copolymer having an Mw/Mn in the range from 5.0 to 12, wherein Mw stands for the weight average molecular weight and Mn stands for the number average weight and wherein Mw and Mn are measured according to ASTM D6474-12, an XS in the range from 1.0 to 6.0 wt %, wherein XS stands for the amount of xylene solubles which are measured according to ASTM D 5492-10, a melt flow rate in the range of 1 to 10 dg/min as measured according to IS01133 (2.16 kg/230° C.) and a crystal size distribution as indicated by a height/width ratio of the highest peak of the first cooling curve of at least 0.70 W/g° C. as determined by ASTM D3418-08 using a heating and cooling rate of 10° C./min.

Abstract: The invention relates to a composition comprising A) polyolefin and B) one or more compounds selected from the group of galactopyranoside derivatives, galactopyranose derivatives, mannopyranoside derivatives, mannopyranose derivatives, mannofuranoside derivatives and mannofuranose derivatives, wherein the amount of component B) is from 0.25 to 5 wt % based on the total composition. The invention relates to use of the composition in injection molding.

Abstract: The invention relates to a gas phase polymerisation process for the production of ethylene polymers in the presence of a catalyst composition based on a chromium compound, a titanium compound and a silica support material. The silica support material has a surface area (SA) between 685 m2/g and 800 m2/g, a pore volume (PV) between 1.65 and 1.85 cm3/g and an average particle size in the range between 25 and 35 micrometres. The catalyst composition is injected by a dry catalyst feeder into the polymerization reactor.

Abstract: The invention relates to a biaxially oriented polypropylene (BOPP) film comprising a propylene homopolymer or propylene-ethylene copolymer having an ethylene content of at most 1.0 wt % based on the propylene-ethylene copolymer having an Mw/Mn in the range from 5.0 to 12, wherein Mw stands for the weight average molecular weight and Mn stands for the number average weight and wherein Mw and Mn are measured according to ASTM D6474-12, an XS in the range from 1.0 to 6.0 wt %, wherein XS stands for the amount of xylene solubles which are measured according to ASTM D 5492-10, a melt flow rate in the range of 1 to 10 dg/min as measured according to IS01133 (2.16 kg/230° C.) and a crystal size distribution as indicated by a height/width ratio of the highest peak of the first cooling curve of at least 0.70 W/g° C. as determined by ASTM D3418-08 using a heating and cooling rate of 10° C./min.

Abstract: The invention relates to a process for the preparation of polypropylene having: a molecular weight of 450,000-950,000, a molecular weight distribution of 3-6, and xylene soluble content of 2-6 wt %, by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component and a co-catalyst, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2?x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor.

Abstract: The invention relates to a composition comprising A) polyolefin and B) one or more compounds selected from the group of galactopyranoside derivatives, galactopyranose derivatives, mannopyranoside derivatives, mannopyranose derivatives, mannofuranoside derivatives and mannofuranose derivatives, wherein the amount of component B) is from 0.25 to 5 wt % based on the total composition. The invention relates to use of the composition in injection molding.

Abstract: The invention relates to a process for the preparation of polypropylene having —a molecular weight (Mw) of 450,000-950,000, —a molecular weight distribution of 3-6, —a melt flow in the range of 7-14 dg/min measured with a load of 21.6 kg at 230° C. or 0.05-2 dg/min measured with a load of 2.16 kg at 230° C. and —a xylene soluble content of 2-6 wt % by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.

Abstract: The invention relates to a gas phase polymerisation process for the production of ethylene polymers in the presence of a catalyst composition based on a chromium compound, a titanium compound and a silica support material. The silica support material has a surface area (SA) between 685 m2/g and 800 m2/g, a pore volume (PV) between 1.65 and 1.85 cm3/g and an average particle size in the range between 25 and 35 micrometres. The catalyst composition is injected by a dry catalyst feeder into the polymerization reactor.

Abstract: The invention relates to a process for the preparation of ethylene-propylene copolymers having —a weight average molecular weight of 800,000-1,800,000, —a molecular weight distribution of 3-8, —an ethylene content of 1-10 wt %, preferably 1.5 to 5.5 wt %. —a melt flow in the range of 1.5-8 dg/min measured with a load of 21.6 kg at 230° C. and —a xylene soluble content of 2-15 wt % by converting propylene into the UHMWEP copolymer without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.

Abstract: The invention relates to a process for the preparation of polypropylene having: a molecular weight of 450,000-950,000, a molecular weight distribution of 3-6, and xylene soluble content of 2-6 wt %, by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component and a co-catalyst, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2-x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor.

Abstract: The invention relates to a process for the preparation of polypropylene having: a molecular weight of 450,000-950,000, a molecular weight distribution of 3-6, and xylene soluble content of 2-6 wt %, by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.0020, wherein the catalyst comprises a catalyst component and a co-catalyst, wherein the catalyst component is obtained by a process wherein a compound with formula Mg(OAlk)xCly wherein x is larger than 0 and smaller than 2, y equals 2?x and each Alk, independently, represents an alkyl group, is contacted with a titanium tetraalkoxide and/or an alcohol in the presence of an inert dispersant to give an intermediate reaction product and wherein the intermediate reaction product is contacted with titanium tetrachloride in the presence of an internal donor.

Abstract: The invention relates to a process for the preparation of ethylene-propylene copolymers having —a weight average molecular weight of 800,000-1,800,000, —a molecular weight distribution of 3-8, —an ethylene content of 1-10 wt %, preferably 1.5 to 5.5 wt %. —a melt flow in the range of 1.5-8 dg/min measured with a load of 21.6 kg at 230° C. and —a xylene soluble content of 2-15 wt % by converting propylene into the UHMWEP copolymer without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.

Abstract: The invention relates to a process for the preparation of polypropylene having —a molecular weight (Mw) of 450,000-950,000, —a molecular weight distribution of 3-6, —a melt flow in the range of 7-14 dg/min measured with a load of 21.6 kg at 230° C. or 0.05-2 dg/min measured with a load of 2.16 kg at 230° C. and —a xylene soluble content of 2-6 wt % by converting propylene into the polypropylene without pre-polymerization in the presence of a polymerization catalyst under a condition where the volume ratio of H2 to propylene is at most 0.