Abstract: The present invention discloses metallic complexes based on oxime-ether ligand and their use in oligomerisation and in polymerisation of ethylene and alpha-olefins.

Abstract: The present invention relates to a process for the producing propylene and ethylene from a light hydrocarbon stream comprising essentially ethane and butane. The process involves a non-catalytic cracking of ethane and normal-butane followed by a metathesis of ethylene and 2-butene to increase the propylene yield. Optionally the by-produced iso-butane is dehydrogenated and subsequently the produced iso-butene is converted to other valuable products like di-isobutylene, alkylate for gasoline blending tertiary-butyl-ethers, poly-isobutylene methyl-metacrylate or isoprene.

Abstract: The present invention relates to the field of group 4 post-metallocene complexes based on sterically encumbered bis(naphtoxy)pyridine and bis(naphtoxy)thiophene ligands. It also relates to the use of such post-metallocene complexes in the polymerisation of ethylene and alpha-olefins.

Abstract: The invention relates to a device for taking out and analysing a sample from a polymerisation reactor comprising one or more sample conduits (2), for taking a sample out of said reactor and for conducting said sample to one or more sample flash tanks (3), whereby said conduits each are in communication with said reactor (19) and each are provided with at least two sampling valves (4, 5); comprising one or more sample flash tanks (3), for separating said solid particles and evaporated gas, whereby said sample flash tanks are connected to said conduits (2) and provided with means for analysing said evaporated gas (7), and comprising one or more sample receivers (6), for purifying said solid particles, whereby said receivers are connected to said sample flash tanks (3) and provided with means (8) for analysing said solid particles. The invention further relates to a method for improving a polymerisation reaction in a polymerisation reactor.

Abstract: The invention relates to a method for catalytic cracking to maximize the production of diesel base stocks, comprising a cracking reaction step in an upflow fluidized bed reactor (1), a step of separating the cracked hydrocarbons and coked catalyst, a step of fractionating the cracked hydrocarbons and a step of regenerating said coked catalyst, wherein the hydrocarbon feedstock is injected into the upflow reactor on a catalyst partially deactivated by prior coking of at least part thereof in the same upflow reactor, so that the reaction temperature of the effluents leaving said reactor varies from 470 to 600° C. The invention also relates to a device for implementing the cracking method.

Abstract: The invention provides an apparatus for introducing additives onto a polymer powder. It also provides a method for introducing an additive into a polyolefin powder, which method comprises the following steps: (a) adding the additive in a solvent to form a solution; and (b) introducing the solution to the polymer powder at a temperature of 60° C. or more, wherein, the solution is introduced to the polymer powder by spraying via a heated spraying means.

Abstract: The disclosure relates to a bituminous composition comprising at least one bitumen and at least one organogelling molecule taken alone or as a mixture, said organogelling molecule being represented by the following general formula (I): where: A represents an acyclic, cyclic or polycyclic, saturated or unsaturated, linear or branched hydrocarbon-based group having 3 to 92 carbon atoms, resulting from the polymerization of the side chains of at least one unsaturated fatty acid, X represents an NH group or an oxygen atom O, R1 represents a group chosen from: a linear or branched hydrocarbon-based group having 2 to 40 carbon atoms, optionally comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsubstituted aromatic group, R2 represents a group chosen from: a hydrogen atom, a linear or branched hydrocarbon-based group having 1 to 40 carbon atoms, comprising one or more heteroatoms and optionally comprising one or more unsaturations, or a substituted or unsub

Abstract: The present invention relates to the field of steel pipes and vessels rotolined with metallocene-produced polyethylene.

Abstract: The present invention relates to a process for the conversion of ethanol to make essentially ethylene and propylene, comprising: a) introducing in a reactor (A) (also called the first low temperature reaction zone) a stream comprising ethanol under a partial pressure at least about 0.

Abstract: The present invention discloses catalyst components based on ferricinium ligands, their method of preparation and their use in the polymerisation of olefins.

Abstract: The present invention relates to a process for catalytically converting an alkylaromatic hydrocarbon into a vinylaromatic hydrocarbon by directing said alkylaromatic hydrocarbon and steam into a reactor containing dehydrogenation catalyst, said process comprising the steps of: (a) forming a mixed reactant stream consisting essentially of said alkylaromatic hydrocarbon and steam; (b) bringing said mixed reactant stream into contact with a dehydrogenation catalyst consisting essentially of iron oxide catalyst promoted with alkali metal and at conditions effective to convert at least a portion of the alkylaromatic hydrocarbon to vinylaromatic hydrocarbon; wherein an effective amount of an alkali metal compound in the form of a powder is injected continuously or intermittently in at least one of the feedstocks sent to the dehydrogenation catalyst; said effective amount of alkali metal compound being sufficient to maintain substantially constant levels of conversion of alkylaromatic hydrocarbon and selectivity o

Abstract: The present invention is a process for the alkylation of an aromatic substrate comprising: (a) providing an alkylation reaction zone containing an alkylation catalyst; (b) introducing a feedstock comprising an aromatic substrate and an alkylating agent into the inlet of said alkylation reaction zone and into contact with said alkylation catalyst; (c) operating said alkylation reaction zone at temperature and pressure conditions to cause alkylation of said aromatic substrate in the presence of said alkylation catalyst to produce an alkylation product comprising a mixture of said aromatic substrate and monoalkylated and polyalkylated aromatic components; (d) withdrawing the alkylation product from said alkylation reaction zone; wherein the nitrogen containing compounds impurities in the aromatic substrate or in the alkylating agent or both in the aromatic substrate and in the alkylating agent are monitored in a range 15 wppb-35 wppm by dry colorimetry.

Abstract: Described herein are molecules, constructs and methods for the production and secretion of polypeptides of interest by host cells, preferably bacterial host cells, and more particularly gram positive bacteria. In particular, the present invention is related to a polynucleic acid encoding a fusion protein and to uses thereof for the secretion of heterologous or homologous polypeptides of interest by a bacterial host cell, preferably Clostridium bacteria. The present invention further relates to methods and constructs for the production and secretion of heterologous or homologous polypeptides of interest proteins by host cells using such polynucleic acids and fusion proteins.

Abstract: The present invention relates to an improved process of purging an extrusion apparatus. The purging process is improved by adjusting the type of polymer material used to purge the extrusion apparatus and by adjusting the purging flow rate.

Abstract: The invention relates to a process for producing polyethylene aseptic squeezable pouches. The invention also covers said pouches and their use for medical packaging applications.

Abstract: The present invention relates to a loop reactor suitable for olefin polymerization process comprising: a plurality of interconnected pipes defining a flow path for a polymer slurry, said slurry consisting essentially of an olefin reactant, a polymerization catalyst, liquid diluent and solid olefin polymer particles, means for introducing olefin reactant, polymerization catalyst and diluent into said reactor, a pump suitable for maintaining the polymer slurry in circulation in said reactor, and single settling leg connected to said loop reactor through (a) a take off line extending from said reactor to said settling leg and configured to remove said polymer slurry from said reactor, and (b) a return line extending from said settling leg to said reactor, characterized in that said take off line is radially connected to said single settling leg.

Abstract: The present invention relates to a process for the dehydration of at least an alcohol to make at least an olefin, comprising: introducing in a reactor a stream (A) comprising at least an alcohol, optionally water, optionally an inert component, contacting said stream with a catalyst in said reactor at conditions effective to dehydrate at least a portion of the alcohol to make an olefin, recovering from said reactor an olefin containing stream (B), Wherein the catalyst is: a crystalline silicate having a ratio Si/Al of at least about 100, or a dealuminated crystalline silicate, or a phosphorus modified zeolite, the WHSV of the alcohols is at least 2 h?1, the temperature ranges from 280° C. to 500° C. It relates also to the same process as above but wherein the catalyst is a phosphorus modified zeolite and at any WHSV. The partial pressure of the alcohol in the dehydration reactor advantageously ranges from 1.2 to 4 bars absolute (0.12 MPa to 0.

Abstract: The present invention provides a method for preparing a metallosilicate of MFI type, wherein organic templates, seeding techniques, using low aliphatic alcohols miscible with water or homogeneous starting solutions are not required. The present invention relates to a process for making a crystalline metallosilicate with high Si/Metal ratio comprising: a) providing an aqueous medium comprising OH? anions and a metal source, b) providing an aqueous medium comprising an inorganic water insoluble source of silicon, c) optionally providing a non aqueous liquid medium comprising optionally an organic source of silica, d) mixing the medium a), b) and the optional c) at conditions effective to crystallize the desired metallosilicate, e) recovering the desired metallosilicate, wherein in the mixture a)+b)+c), before crystallization, the ratio Si org/Si inorganic is <0.3, advantageously <0.2 and preferably 0, the molar ratio OH?/SiO2 is at least 0.3, advantageously from 0.3 to 0.62, preferably from 0.

Abstract: The present invention concerns heterophasic propylene copolymers, comprising a propylene homopolymer (PPH) and an ethylene-propylene rubber (EPR), having a very broad molecular weight distribution, a well-defined total ethylene content and a specific intrinsic viscosities of the ethylene-propylene rubber (EPR). The invention further concerns the process to produce such heterophasic propylene copolymers. The heterophasic propylene copolymers of the present invention are particularly suited for pails, pallets, IBCs and crates. In particular, the heterophasic propylene copolymers of the present invention are characterized by an improved resistance to creep.