Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) where the R1 and R5 groups, equal to or different from each other, are selected from C1-C15 hydrocarbon groups, R2 group is selected from C2-C10 hydrocarbon groups, R3 to R4 groups, independently, are selected from hydrogen or C1-C20 hydrocarbon groups, optionally fused together to form one or more cycles, with the proviso that at least one of R3 to R4 groups is a C1-C20 alkyl group.

Abstract: A boarding system and a computer-implemented method for boarding a plurality of passengers onto an aircraft, each passenger having an assigned seat on the aircraft. The boarding system 100 comprises a scheduling system 110 configured to control access of each of the plurality of passengers to a respective boarding path in accordance with a boarding schedule 112, each boarding path extending between a boarding gate and the assigned seat of the respective passenger; and a tracking system 120 comprising a plurality of monitoring devices, the tracking system 120 being configured to monitor behaviour of each of the plurality of passengers when moving along their respective boarding path. The scheduling system 110 is configured to modify the boarding schedule 112 in response to identification of a congestion point along a boarding path based on data received from the tracking system 120.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) where the R1 and R5 groups, equal to or different from each other, are selected from C1-C15 hydrocarbon groups, R2 group is selected from C2-C10 hydrocarbon groups, R3 to R4 groups, independently, are selected from hydrogen or C1-C20 hydrocarbon groups, optionally fused together to form one or more cycles, with the proviso that at least one of R3 to R4 groups is a C1-C20 alkyl group.

Abstract: A polypropylene composition made from or containing: A) from 60 to 90 wt %, based upon the total weight of the polypropylene composition, of a fraction insoluble in xylene at 25° C., is made from or containing more than 80% wt of propylene units, and B) from 10 to 40 wt %, based upon the total weight of the polypropylene composition, of a fraction soluble in xylene at 25° C. is made from or containing a copolymer of propylene and ethylene having an average content of ethylene derived units from 30.0 wt % to 55.0 wt %, wherein the fraction when subjected to GPC fractionation and continuous IR analysis for determining the ethylene content of the eluted fractions (GPC-IR analysis), shows that the content of ethylene increases along with the Mw for fractions having Mw higher than the average.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing a magnesium halide, a titanium compound having at least a Ti-halogen bond, a first electron donor compound selected from 1,3 diethers (DE), and a second electron donor compound selected from dicarbamates (DC), wherein the first and second electron donor compounds are present in a molar ratio DE:DC ranging from 4.5:1 to 20:1.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti, Cl and at least an electron donor compound which is the reaction product obtained by bringing into contact a Mg compound and a Ti compound having at least a Ti-halogen bond with an electron donor selected from diphenol derivatives.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) wherein R1 and R7 groups, equal to or different from each other, are selected from C1-C15 hydrocarbon groups, R2 group is selected from C1-C10 hydrocarbon groups, and R3 to R6 groups, independently, are selected from hydrogen or C1-C15 hydrocarbon groups which can be fused together to form one or more cycles. The catalyst system based on the solid catalyst component is endowed with high activity and stereospecificity.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) wherein R1 and R7 groups, equal to or different from each other, are selected from C1-C15 hydrocarbon groups, R2 group is selected from C1-C10 hydrocarbon groups, and R3 to R6 groups, independently, are selected from hydrogen or C1-C15 hydrocarbon groups which can be fused together to form one or more cycles. The catalyst system based on the solid catalyst component is endowed with high activity and stereospecificity.

Abstract: A solid catalyst component which exhibits high activity and stereospecificity in the polymerization of olefins made from or containing Mg, Ti and an electron donor of formula (I) where R and R1 are selected from the group consisting of C1-C20 hydrocarbon groups, C6-C14 aryl or alkylaryl groups hydrocarbon groups, optionally containing a heteroatom selected from the group consisting of halogens, P, S, N, and O; R2 to R11 groups, equal to or different from each other, are hydrogen, halogen or C1-C15 hydrocarbon groups which can be optionally fused together to form one or more cycles with the proviso that R6 and R11 cannot join together to form a phenyl ring.

Abstract: A solid catalyst component for the polymerization of olefins, made from or containing Mg, Ti and an electron donor of formula (I) where independently, Z is a bridging group, the R2 groups, equal to or different from each other, are hydrogen or a C1-C20 hydrocarbon radicals, m is a number satisfying the valences of Z and n is an integer ranging from 1 to 10, R1 and R4 are selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from halogen, P, S, N, O; and R3 group, is hydrogen or R4 groups.

Abstract: A catalyst system comprising the product obtained by contacting (a) a solid catalyst component containing Mg, Ti, halogen and at least an electron donor compound selected from phenylene aromatic diesters of a specific formula (b) an alkylaluminum cocatalyst and (c) an ester of formula R?OOC—(CR?2)m—COOR? in which m is an integer from 2 to 7, the R? groups, equal to or different from each other, are C1-C10 alkyl groups and the R? groups, independently, are hydrogen or C1-C15 hydrocarbon groups.

Abstract: The present disclosure relates to a solid catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of the formula (I): where each Q is a group —COOR1, in which R1 is selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from the group consisting of halogens, P, S, N and O; or a group —CON(R2)2, in which R2 groups, equal to or different from each other, are hydrogen or R1 groups which can be fused together to form one or more cycles, and A is a bivalent bridging group with the proviso that the Q groups cannot be simultaneously a group —COOR1 or —CON(R2)2.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti, halogen and an electron donor of formula (I) or (II): When activated with an aluminum alkyl and optionally an external electron donor, the solid catalyst component can give high activity and stereospecificity in the polymerization of olefins.

Abstract: The present disclosure relates to a solid catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of the formula (I): where each Q is a group —COOR1, in which R1 is selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from the group consisting of halogens, P, S, N and O; or a group —CON(R2)2, in which R2 groups, equal to or different from each other, are hydrogen or R1 groups which can be fused together to form one or more cycles, and A is a bivalent bridging group with the proviso that the Q groups cannot be simultaneously a group —COOR1 or —CON(R2)2.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti, halogen and an electron donor of formula (I) or (II) When activated with an aluminum alkyl and optionally an external electron donor, solid catalyst component can give high activity and stereospecificity in the polymerization of olefins.

Abstract: The present disclosure relates to a catalyst component for the polymerization of olefins comprising Mg. Ti and an electron donor such as mercaptoester derivatives of the general formula (I). in which Z is selected from C, Si, O, N, S or P, with the proviso that the atoms O, S, P and N are not directly linked to either the carboxylic group or the sulfur atom of formula (I), the R2 groups, equal to or different from each other, are selected from hydrogen or a C1-C20 hydrocarbon radicals, optionally containing a heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more cycles, m is a number satisfying the valences of Z and n is an integer ranging from 1 to 10, X is O or S, Y is —OR3, —NR4R5) or R6 groups in which R1 and R3 are selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from halogen, P, S, N, O, and Si, R4-R5 groups, independently, are hydrogen or R1 groups, and R6 groups have the same composition as R1 groups.

Abstract: Catalyst component for the polymerization of olefins comprising Mg, Ti and an electron donor of formula (I) In which X and Y are selected from, R1, and —OR1 and —NR2, B is oxygen or sulphur S is sulphur, R1 is selected from C1-C15 hydrocarbon groups, optionally contain a heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more cycles, R is hydrogen or R1 and A is a bivalent bridging group with chain length between the two bridging bonds being 1-10 atoms.

Abstract: A solid catalyst component for the polymerization of olefins, made from or containing Mg, Ti and an electron donor of formula (I) where independently, Z is a bridging group, the R2 groups, equal to or different from each other, are hydrogen or a C1-C20 hydrocarbon radicals, m is a number satisfying the valences of Z and n is an integer ranging from 1 to 10, R1 and R4 are selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from halogen, P, S, N, O; and R3 group, is hydrogen or R4 groups.

Abstract: A solid catalyst component for the polymerization of olefins made from or containing Mg, Ti, halogen and an electron donor of formula (I) or (II): When activated with an aluminum alkyl and optionally an external electron donor, the solid catalyst component can give high activity and stereospecificity in the polymerization of olefins.

Abstract: The present disclosure relates to a catalyst component for the polymerization of olefins comprising Mg. Ti and an electron donor such as mercaptoester derivatives of the general formula (I). in which Z is selected from C, Si, O, N, S or P, with the proviso that the atoms O, S, P and N are not directly linked to either the carboxylic group or the sulfur atom of formula (I), the R2 groups, equal to or different from each other, are selected from hydrogen or a C1-C20 hydrocarbon radicals, optionally containing a heteroatom selected from halogen, P, S, N, O and Si, which can be fused together to form one or more cycles, m is a number satisfying the valences of Z and n is an integer ranging from 1 to 10, X is O or S, Y is —OR3, —NR4R5) or R6 groups in which R1 and R3 are selected from C1-C15 hydrocarbon groups, optionally containing a heteroatom selected from halogen, P, S, N, O, and Si, R4-R5 groups, independently, are hydrogen or R1 groups, and R6 groups have the same composition as R1 groups.