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: A catalyst composition including the compound of Formula I as an internal electron donor, wherein: R1, R2, R3, R4, R5 and R6 are independently selected from a group consisting of hydrogen, straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R7 is selected from a group consisting of straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; and R8 is selected from a group consisting of aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms. Also disclosed is a process for preparing said polymerization catalyst composition; a polymerization catalyst system comprising said catalyst composition, a co-catalyst and optionally an external electron donor; a polyolefin obtainable by the process; and use of the compound of Formula I as in internal electron donor in catalysts for polymerization of olefins.

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 present invention relates to a catalyst component for polymerization of an olefin comprising a compound represented by the Fischer projection of: wherein R5 is substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R6 and R7 are different and independently selected from the group consisting of hydrogen, halogen and substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R5-R7 optionally containing one or more hetero-atoms replacing one or more carbon atoms, one or more hydrogen atom or both, wherein said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen; and wherein the compound of Formula (I) is the only internal electron donor in the catalyst component.

Abstract: A catalyst composition including the compound of Formula I as an internal electron donor, wherein: R1, R2, R3, R4, R5 and R6 are independently selected from a group consisting of hydrogen, straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R7 is selected from a group consisting of straight, branched and cyclic alkyl and aromatic substituted and unsubstituted hydrocarbyl having 1 to 20 carbon atoms; and R8 is selected from a group consisting of aromatic substituted and unsubstituted hydrocarbyl having 6 to 20 carbon atoms. Also disclosed is a process for preparing said polymerization catalyst composition; a polymerization catalyst system comprising said catalyst composition, a co-catalyst and optionally an external electron donor; a polyolefin obtainable by the process; and use of the compound of Formula I as in internal electron donor in catalysts for polymerization of olefins.

Abstract: The present invention relates to a catalyst component for polymerization of an olefin comprising a compound represented by the Fischer projection of: wherein R5 is substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R6 and R7 are different and independently selected from the group consisting of hydrogen, halogen and substituted or unsubstituted hydrocarbyl having 1 to 20 carbon atoms; R5-R7 optionally containing one or more hetero-atoms replacing one or more carbon atoms, one or more hydrogen atom or both, wherein said hetero-atom is selected from the group consisting of nitrogen, oxygen, sulfur, silicon, phosphorus and halogen; and wherein the compound of Formula (I) is the only internal electron donor in the catalyst component.

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: Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) an oxygen containing polymer support; and (iii) a cocatalyst comprising at least one aluminum compound.

Abstract: Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) a chlorine containing polymer support; and (iii) a cocatalyst comprising at least one aluminum compound, wherein the magnesium loading on the final catalyst is between about 0.20 and 6% by weight.

Abstract: The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of group IVB, VB, or VIB of the periodic table, a magnesium compound and aliphatic polyketone particles; and (b) a cocatalyst comprising an aluminum alkyl, an aluminoxane or mixtures thereof; and a process for homopolymerisation or copolymerisation of olefins.

Abstract: Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) an oxygen containing polymer support; and (iii) a cocatalyst comprising at least one aluminum compound.

Abstract: Supported catalyst composition for polymerization of olefins comprising: (i) a titanium compound, a magnesium compound and at least one electron donor compound; (ii) a chlorine containing polymer support; and (iii) a cocatalyst comprising at least one aluminum compound, wherein the magnesium loading on the final catalyst is between about 0.20 and 6% by weight.

Abstract: The present invention relates to a catalyst composition for homopolymerization or copolymerization of olefins comprising: (a) a solid catalyst precursor comprising a transition metal compound of group IVB, VB, or VIB of the periodic table, a magnesium compound and aliphatic polyketone particles; and (b) a cocatalyst comprising an aluminum alkyl, an aluminoxane or mixtures thereof; and a process for homopolymerisation or copolymerisation of olefins.