Abstract: A composition may contain a first polymer, a second polymer, and a block copolymer. The first polymer may be polylactic acid, starch, polybutylene succinate, poly(butylene adipate-co-terephthalate), or a mixture thereof. The second polymer may be polybutadiene, high impact polystyrene, or a mixture thereof. The block copolymer may be a block copolymer of polylactic acid and polybutadiene. The composition may be prepared by a process that includes contacting the first polymer with the second polymer and the block copolymer. Articles may be prepared from the composition.

Abstract: Extrusion blow-molded articles which may include a polypropylene layer are described. The polypropylene layer may include a polypropylene composition layer which may have a specific random copolymer of propylene and at least one comonomer. Also described are processes for the production of such extrusion blow-molded articles.

Abstract: Disclosed herein are an article and a method for preparing the article. The article comprises at least one layer A comprising fibers embedded in a composition comprising at least one vinyl ester resin; and a layer B comprising from 40 to 100% by weight relative to the total weight of said layer B of at least one thermoplastic polyester; from 0 to 60% by weight relative to the total weight of said layer B of a polyolefin composition; said composition comprising at least one polyolefin; and from 0 to 20% by weight relative to the total weight of said layer B of at least one additive selected from compatibilizing agent and/or impact modifier. Layer B may comprise a blow-molded layer, an injected-molded layer, an extruded-thermoformed layer, a sheet-extruded layer, a pipe-extruded layer, and an injection stretch blow-molded layer. Layer A may be in contact with layer B.

Abstract: The present invention relates to a composition comprising: (a) at least one first polymer selected from the group consisting of poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, poly-D-lactide-polybutadiene (PDLA-PB) block copolymer, poly-L-lactide-urethane-polybutadiene block copolymer, and poly-D-lactide-urethane-polybutadiene block copolymer; and (b) at least one second polymer selected from the group consisting of poly-L-lactide, poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, poly-L-lactide-urethane-polybutadiene block copolymer, poly-L-lactide-urethane, poly-D-lactide, poly-D-lactide-polybutadiene (PDLA-PB) block copolymer, poly-D-lactide-urethane-polybutadiene block copolymer, poly-D-lactide-urethane, and mixture thereof, wherein when the at least one first polymer is poly-L-lactide-polybutadiene (PLLA-PB) block copolymer, or poly-L-lactide-urethane-polybutadiene block copolymer, then the at least one second polymer is selected from the group consisting of poly-D-lactide, or poly-D-lac

Abstract: The present invention relates to a process for the preparation of ethylene polymers using a number of reactors arranged in series comprising the steps in which a) ethylene, a diluent, a catalyst, a co-catalyst and optionally comonomers and hydrogen are introduced into a first reactor, b) polymerization of ethylene and optionally comonomers is carried out in the reaction mixture of said first reactor to make ethylene polymers, c) reaction mixture is discharged from said first reactor, d) said reaction mixture and fresh ethylene and optionally comonomers and hydrogen are introduced into the consecutive reactor to make additional ethylene polymers, e) said reaction mixture is discharged from said consecutive reactor and introduced into the further consecutive reactor, if any, with fresh ethylene and optionally comonomers and hydrogen to make additional ethylene polymers, steps c) and d) are repeated until the last reactor of the series, f) reaction mixture is discharged from last reactor of the series and ethyl

Abstract: A catalyst composition contains an inorganic porous material with pore diameters of at least 2 nm and of crystals of molecular sieve. The crystals of molecular sieve have an average diameter, measured by scanning electron microscopy, not bigger than 50 nm. The catalyst composition has a concentration of acid sites ranges from 50 to 1200 ?mol/g measured by TPD NH3 adsorption. An XRD pattern of the catalyst composition is the same as an XRD pattern of the inorganic porous material.

Abstract: This invention relates to a method for dehydration of alcohols into olefins comprising an improved step for recovery of unreacted alcohol.

Abstract: The invention covers a supported catalyst system prepared according to a process comprising the following step: i). impregnating a silica-containing catalyst support having a specific surface area of from 150 m2/g to 800 m2/g, preferably 280 m2/g to 600 m2/g, with one or more titanium compounds of the general formula selected from RnTi(OR?)m and (RO)nTi(OR?)m, wherein R and R? are the same or different and are selected from hydrocarbyl groups containing from 1 to 12 carbon and halogens, and wherein n is 0 to 4, m is 0 to 4 and m+n equals 4, to form a titanated silica-containing catalyst support having a Ti content of at least 0.1 wt % based on the weight of the Ti-impregnated catalyst support wherein the supported catalyst system further comprises an alumoxane and a metallocene.

Abstract: The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order: selecting a zeolite with low Si/Al ratio (advantageously lower than 30) among H+ or NH4+-form of MFI, MEL, FER, MOR, clinoptilolite, said zeolite having been made preferably without direct addition of organic template; steaming at a temperature ranging from 400 to 870° C. for 0.01-200h; leaching with an aqueous acid solution containing the source of P at conditions effective to remove a substantial part of Al from the zeolite and to introduce at least 0.3 wt % of P; separation of the solid from the liquid; an optional washing step or an optional drying step or an optional drying step followed by a washing step; a calcination step.

Abstract: Processes for preparing a polyethylene in at least one continuously stirred tank reactor are described herein. The process may comprise the step of: polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene, wherein the supported metallocene catalyst comprises a solid support, a co-catalyst and at least one metallocene, wherein the solid support has a surface area within the range of from 100 to 500 m2/g, and has a D50 value within the range of from 4 ?m to 18 ?m, with D50 being defined as the particle size for which fifty percent by weight of the particles has a size lower than the D50; and D50 being measured by laser diffraction analysis on a Malvern type analyzer. Polyethylene obtained by the disclosed process and articles comprising the polyethylene are also described.

Abstract: Isomerizing dehydration of feedstock containing a primary alcohol substituted in position 2 by an alkyl group in which the feedstock is heated to the reaction temperature by indirect heat exchange then vaporization by mixing with a diluent effluent, the diluted and vaporized feedstock being dehydrated in at least one dehydration reactor operating in gas phase at an inlet temperature comprised between 250 and 375° C., at a pressure comprised between 0.2 MPa and 1 MPa and at a WHSV comprised between 1 and 18 h?1, in the presence of a catalyst comprising a zeolite having at least one series of channels the opening of which is defined by a ring with 8 oxygen atoms (8MR) and a binder, the catalyst being coked beforehand in-situ or ex-situ, so as to produce a dehydration effluent, the latter being treated and separated into a diluent effluent, an alkenes effluent and a heavy hydrocarbons effluent.

Abstract: The present invention is a method to start-up a process to make expandable vinyl aromatic polymer pellets comprising, a) providing a pelletizer (S) containing means to introduce the molten vinyl aromatic polymer comprising the expandable agent and optionally additives, a die plate having a plurality of holes of small diameter, typically in the range 0.8 to 1.

Abstract: A process may include providing a polyethylene post consumer resin, providing a virgin polyethylene resin, and blending the polyethylene post consumer resin with the virgin polyethylene resin to produce a composition. The polyethylene post consumer resin may have an ESCR of at most 10 hours, a density ranging from 0.950 to 0.967 g/cm3, and an HLMI of 40 to 70 g/10 min. The virgin polyethylene resin may include fractions A and B, with fraction A having a higher molecular weight and lower density than fraction B. Fraction A may have an HL275 of at least 0.1 g/10 min and of at most 4 g/10 min, and a density of at least 0.920 g/cm3 and of at most 0.942 g/cm. The virgin polyethylene resin may have an HLMI of 5 to 75 g/10 min, and a density ranging from 0.945 to 0.960 g/cm3.

Abstract: A process for the manufacture of a block copolymer includes a reaction of a lactide monomers in the presence of a catalyst with a polymer to form the block copolymer having a lactic acid chain, wherein a polymer selected from polypropylene, polyethylene, polysiloxane, polybutylene succinate, polytrimethylene carbonate, polyester, polyether, polystyrene, polyisoprene, polycarbonate, polyalkylenecarbonate, polyvinyl alcohol, polyurethane, or polyacrylate; and wherein the polymer contains n number of OH and/or NH2 group(s), n is an integer greater than or equal to 1 and Moles ? ? of ? ? Lactide ( Moles ? ? of ? ? Compound * n ) ? 70 , and the reaction is performed at a temperature of at least 70° C. The process includes step of quenching of the reaction in order to form the lactic acid chains consisting of 70 or less of the lactide monomers, and the quenching agent is an acid chloride having a formula of Cl—CO—R9, wherein R9 is 1-pentenyl or aminoethyl.

Abstract: Propylene homopolymers having a melt flow index in the range from 3.0 dg/min to 8.0 dg/min can be particularly suited for high-tenacity fibers and yarns and nonwovens. The propylene homopolymers can be produced by a process that can include polymerizing propylene in presence of a Ziegler-Natta polymerization catalyst, an aluminum alkyl, hydrogen and an optional external donor.

Abstract: Propylene polymers having a melt flow index in the range from 3.0 dg/min to 8.0 dg/min can be particularly suited for high-tenacity fibers and yarns and nonwovens. The propylene polymers can be produced by a process that includes polymerizing propylene or propylene and at least one comonomer in presence of a Ziegler-Natta polymerization catalyst, an aluminium alkyl, and hydrogen.

Abstract: A polyethylene resin having a multimodal molecular weight distribution comprising at least two polyethylene fractions A and B, fraction A being substantially free of comonomer and having a lower weight average molecular weight and a higher density than fraction B, each fraction prepared in different reactors of two reactors connected in series in the presence of a Ziegler-Natta catalyst system, the polyethylene resin having a density of from 0.950 to 0.965 g/cm3 and a melt index MI2 of from 0.5 to 5 g/10 min.

Abstract: The present invention discloses a single layer rotomolded article prepared from a blend of polyethylene, functionalized polyolefin and one or more resins selected from polyetherester or saturated polyester or polycarbonate or polyamide.

Abstract: An article is provided that includes a blend. The blend includes from at least 5.0% to at most 20.0% by weight of polylactic acid (PLA), based on the total weight of the blend; at least 5.0% to at most 92.0% by weight of polypropylene (PP) or of a mixture of polypropylene (PP) and polyethylene (PE), based on the total weight of the blend; from 0.0% to at most 40.0% by weight of an inorganic filler, based on the total weight of the blend; at least 0.1% to at most 10.0% by weight of a compatibilizer, based on the total weight of the blend; and at least 0.1% to at most 40.0% by weight of an elastomer, based on the total weight of the blend. The elastomer is ethylene octene rubber or ethylene butene monomer rubber. The article is at least partially coated with at least one coating.

Abstract: A method can include consecutively batch processing at least two different polyethylene grades in pellet form in a pellet handling unit. A ratio of a melt flow index (MI) of a first polyethylene in pellet form (MIf) to a MI of a later processed polyethylene in pellet form (MIl) can be smaller than 0.30. The method can include processing an intermediate polyethylene grade in pellet form. An amount of intermediate polyethylene grade processed can be at most 1/100th of a handling capacity of the pellet handling unit. The intermediate polyethylene grade can have the same MI as the later processed polyethylene in pellet form.