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Isabella Maria Vittoria Camurati

Bio: Isabella Maria Vittoria Camurati is an academic researcher from University of Bologna. The author has contributed to research in topics: Polymerization & Isomerization. The author has an hindex of 2, co-authored 4 publications receiving 242 citations.

Papers
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Patent
22 Feb 2011
TL;DR: In this article, the ORI/Ti molar ratio in the range 0.1-1.5 was used for the polymerization of MWD crystalline ethylene polymers.
Abstract: Catalyst components for the(co)polymerization of ethylene comprising Ti, Mg, halogen, ORI groups, where RI is a C1-C12 hydrocarbon group optionally containing heteroatoms, having ORI/Ti molar ratio in the range 0.1-1.5, a Mg/Ti molar ratio of less than 8, an amount of titanium, with respect to the total weight of said solid catalyst component, higher than 4% by weight characterized by a specific SS-NMR pattern are particularly useful for preparing narrow MWD crystalline ethylene polymers.

201 citations

Journal ArticleDOI
TL;DR: In this paper, the rotational barriers of N-methylpyrrole and Nmethylindole with B(C6F5)3 were calculated from 1H NMR experimental data.

40 citations

Patent
02 Jul 2010
TL;DR: In this article, a process for the preparation of 1-butene homopolymers or 1butene/alpha olefin copolymers is described, where the alpha olefins are selected from ethylene, propylene, or alpha Olefin compounds of formula CH 2 =CHZ wherein Z is a C 3 -C 20 alkyl radical, comprising contacting 1-Butene or 1- butene and one or more alpha olate compounds under polymerization conditions in the presence of a catalyst system.
Abstract: A process for the preparation of 1-butene homopolymers or 1-butene/alpha olefin copolymers wherein the alpha olefins are selected from ethylene, propylene or alpha olefins of formula CH 2 =CHZ wherein Z is a C 3 -C 20 alkyl radical, comprising contacting 1-butene or 1-butene and one or more alpha olefins under polymerization conditions in the presence of a catalyst system comprising: (a) a solid component comprising a Ti compound and an internal electron-donor compound supported on MgCl 2 (b) an alkylaluminum cocatalyst; and (c) a compound of formula (I) as external donor wherein R 1 , R 2 , R 3 , R 4 and R 5 hydrogen atoms or C 1 -C 20 hydrocarbon radicals, or two R 1 , R 2 , R 3 and R 4 can be joined to form a C 5 -C 20 , saturated or unsaturated, ring.

1 citations


Cited by
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Journal ArticleDOI
TL;DR: This critical review summarizes the progress made in this field until November 2006 and describes the development of C-H activation methods for direct functionalization of heterocyclic molecules.
Abstract: During the last two decades there has been considerable growth in the development of catalytic reactions capable of activating unreactive C–H bonds. These methods allow for the synthesis of complex molecules from easily available and cheaper precursors in a fewer number of steps. Naturally, the development of C–H activation methods for direct functionalization of heterocyclic molecules, invaluable building blocks for pharmaceutical and synthetic chemistry and material science, has received substantial attention as well. This critical review summarizes the progress made in this field until November 2006 (117 references).

1,461 citations

Patent
15 Oct 2003
TL;DR: In this paper, a tackifier was added to an olefin polymer and the Gardner color of the adhesive did not change by more than 7 Gardner units when the adhesive has been heat aged at 180°C. for 48 hours as compared to the Gardner colour of the unaged composition.
Abstract: Embodiments of the present invention relate to article comprising 1) a functionalized component, 2) tackifier, and 3) an olefin polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 5 mole % of ethylene having a Dot T-Peel of 1 Newton or more, a branching index (g′) of 0.95 or less measured at the Mz of the polymer; and an Mw of 100,000 or less; where the functional component is selected from the group consisting of functionalized polymers, functionalized oligomers and beta nucleating agents; and where the Gardner color of the adhesive does not change by more than 7 Gardner units when the adhesive has been heat aged at 180° C. for 48 hours as compared to the Gardner color of the unaged composition.

370 citations

Patent
15 Oct 2003
TL;DR: In this paper, a branching index (g') of 0.95 or less measured at the Mz of the polymer was defined, and the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1, where at least 20% of the olefins are converted to polymer.
Abstract: This invention relates to a polymer comprising one or more C3 to C40 olefins, optionally one or more diolefins, and less than 15 mole % of ehtylene, where the polymer has: a) a Dot T-Peel of 1 Newton or more; and b) a branching index (g') of 0.95 or less measured at the Mz of the polymer; c) an Mw of 100,000 or less and to a continuous process to produce a branched olefin polymer comprising 1) selecting a first catalyst component capable of producing a polymer having an Mw of 100,000 or less and a crystallinity of 5% or less under selected polymerization conditions; 2) selecting a second catalyst component capable of producing polymer having an Mw of 100,000 or less and a crystallinity of 20% or more at the selected polymerization conditions; 3) contacting the catalyst components in the presence of one or more activators with one or more C3 to C40 olefins, and, optionally one or more diolefins; 4) at a temperature of greater than 100°C; 5) at a residence time of 120 minutes or less; 6) wherein the ratio of the first catalyst to the second catalyst is from 1:1 to 50:1; 7) wherein the activity of the catalyst components is at least 100 kilograms of polymer per gram of the catalyst components; and wherein at least 20% of the olefins are converted to polymer.

196 citations