Abstract: New polycyclic cyclopentadiene compounds having the formula (II) wherein the various substituents and symbols R1, R2, R3, R4, R5, R6, R7, Z1 and Z2 and “n” have the meaning specified in the description. These compounds can form metallocene complexes with transition metals, which have shown unusual properties in the (co)polymerization of ethylene and alpha-olefins in general.
Type:
Grant
Filed:
November 12, 2004
Date of Patent:
August 16, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Paolo Biagini, Diego Vigliarolo, Giampietro Borsotti, Roberto Santi
Abstract: Process for the selective oligomerization of ethylene to give ?-olefins essentially consisting of C4 to C8, characterized in that it is carried out in the presence of a catalytic system comprising the complex having general formula (II): (L)M(Y)n wherein L represents the ligand having general formula (I) M represents a transition metal; Y is selected from groups of an anionic nature bound to the metal as anion in ionic couple or with a covalent bond of the “?” type.
Type:
Grant
Filed:
October 3, 2001
Date of Patent:
August 9, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Claudio Bianchini, Anna Sommazzi, Giuseppe Mantovani, Roberto Santi, Francesco Masi
Abstract: The present invention relates to tridentate ligands and the relative complexes of these ligands with transition metals. The ligands and their complexes are useful in the oligomerization and/or polymerization of ethylene and ?-olefins. The ligands are represented by formula (I) wherein R1 is ethyl, R2, R3, R4, R5 and R6, are independently selected from the group consisting of hydrogen, halogen, C1-C10 alkyl, C6-C15 aryl, and halogenated C6-C15 aryl; R7 is selected from the group consisting of H, C1-C10 alkyl, and C6-C15 aryl; and R8 is selected from the group consisting of phenyl, alkyl substituted phenyl, C1-C10 alkyl and C6-C15 aryl.
Type:
Grant
Filed:
October 4, 2001
Date of Patent:
July 12, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Claudio Bianchini, Anna Sommazzi, Giuseppe Mantovani, Roberto Santi, Francesco Masi
Abstract: Elastomeric blends are described, comprising an elastomeric composition and carbon black, the above elastomeric composition consisting of: (i) one or more elastomers (A) selected from ethylene-propylene (EPM) copolymers and ethylene-propylene-diene (EPDM) terpolymers; (ii) one or more elastomers (B) selected from ethylene-propylene (EPM) copolymers and ethylene-propylene-diene (EPDM) terpolymers and relative mixtures, the above elastomers having been previously treated with at least one hydroperoxide at a temperature ranging from 80° C. to 250° C. so as to undergo a reduction in the molecular weight: the weight ratio between the elastomers (i) and (ii), having a sum of 100, being from 0/100% to 90/10%.
Abstract: Process for the production of granules of expandable thermoplastic polymers by means of extrusion, which comprises: i) melting the polymer in a single- or multi-screw extruder (2); ii) incorporating an expanding agent in the polymer in the molten state; iii) granulating the polymer thus obtained in a device comprising a die (111), containing a series of ducts (115) made of a material having a high thermal conductivity (114), a cutting chamber (118) containing a set of hydraulic nozzles and a cutting system equipped with a set of knives (215) with a cutting edge which is radial with respect to the surface of the die; iv) annealing the granules thus obtained; v) cooling the annealed granules to room temperature.
Abstract: Process for the preparation of functionalized polyolefins, which comprises treatment under shear conditions of said polyolefins with an unsaturated monomer containing polar groups in the presence of at least one hydroperoxide as radicalic initiator. The process allows the grafting of unsaturated monomers without the formation of cross-linked polymeric material and without modifying the molecular weight distribution.
Type:
Application
Filed:
March 12, 2003
Publication date:
May 26, 2005
Applicant:
POLIMERI EUROPA S.p.A
Inventors:
Tiziano Tanaglia, Aroldo Biggi, Orsola Casaburo, Lisa Biggi, Francesco Masi
Abstract: New polycyclic cyclopentadiene compounds having the formula (II) wherein the various substituents and symbols R1, R2, R3, R4, R5, R6, R7, Z1 and Z2 and “n” have the meaning specified in the description. These compounds can form metallocene complexes with transition metals, which have shown unusual properties in the (co)polymerization of ethylene and alpha-olefins in general.
Type:
Application
Filed:
November 12, 2004
Publication date:
May 5, 2005
Applicant:
POLIMERI EUROPA S.p.A.
Inventors:
Paolo Biagini, Diego Vigliarolo, Giampietro Borsotti, Roberto Santi
Abstract: The present invention relates to an integrated process for the preparation in continuous of epoxides which comprises: (a) preparing an alcoholic or hydro-alcoholic solution of hydrogen peroxide in a concentration of over 3% by weight, using a gaseous stream containing hydrogen, oxygen and an inert gas, in the presence of a bimetallic catalyst based on palladium and platinum as active components; (b) putting the alcoholic or hydro-alcoholic solution of hydrogen peroxide obtained in step (a) in contact with an olefin and a buffering agent, in the presence of an epoxidation catalyst suspended in the reaction solvent, in order to obtain a reaction mixture containing the epoxide corresponding to the olefin, water and alcoholic solvent; (c) treating the alcoholic stream leaving step (b), after separation of the epoxide, in order to eliminate the nitrogenated compounds present; (d) feeding the alcoholic solvent obtained in (c) to step (a).
Type:
Grant
Filed:
August 6, 2001
Date of Patent:
May 3, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Giuseppe Paparatto, Anna Forlin, Giordano De Alberti, Rino D'Aloisio, Paolo Tegon
Abstract: A catalytic composition for the selective oligomerization of ethylene and a process for preparing light linear (?-olefins, especially 1-hexene and 1-octene, starting from ethylene, using this composition, said composition comprising the following components: (A) a compound of a transition metal M of Group 4 of the periodic table; (B) an organic compound containing the sulfonic group (>SO2) bonded to two carbon atoms; (C) a hydrocarbyl organometallic compound of a metal M? selected from elements of Groups 1, 2, 12, 13 or 14 of the periodic table; components (A), (B) and (C) being in such a quantity that the atomic ratios respectively of the metal M in (A), of the sulfur S in the sulfonic group of (B) and of the metal M? in (C), respect the following proportions: S/M=(from 0 to 20)/1 and M?/M=(from 2 to 2000)/1, on the condition that when the compound of the metal M in component (A) is not a sulfonic complex of M, the S/M ratio is greater than 0.5, preferably greater than 1.
Abstract: A process is described for the preparation of elastomeric EP(D)M copolymers and terpolymers, characterized in that it is carried out in the presence of metallocene compounds of general formula (I) having a racemic stereoisomerism
Type:
Grant
Filed:
April 23, 2002
Date of Patent:
March 1, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Paolo Biagini, Stefano Ramello, Roberto Provera, Roberto Santi
Abstract: Process for the production of statistic elastomeric conjugated diene-vinyl arene copolymers having a branched structure which comprises: (1) anionic copolymerization in solution of the conjugated diene and vinyl arene monomers, in the presence of randomizing agents and an initiator selected from the group of Lithium alkyls, the copolymerization being carried out until the almost total disappearance of the monomers; (2) addition to the solution of step (1) of a quantity of Lithium alkyl from 1 to 4 times the molar quantity of the Lithium alkyl of step (1); (3) addition to the polymeric solution of step (2) of a compound having the general formula R—Br, the molar ratio between R—Br and the total Lithium alkyl ranging from 0.6/1 to 1/1, preferably from 0.7/1 to 0.9/1, thus obtaining an elastomeric branched copolymer.
Type:
Grant
Filed:
April 5, 2001
Date of Patent:
February 22, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Gian Tommaso Viola, Luca Soddu, Sabrina Isidori, Attilio Taccioli, Francesco Masi
Abstract: Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.
Type:
Application
Filed:
December 22, 2003
Publication date:
February 10, 2005
Applicant:
POLIMERI EUROPA S.p.A.
Inventors:
Daniele Delledonne, Franco Rivetti, Eugene Boden, Ganesh Kailasam, Larry Lewis, Alberto Nisoli, John Ofori, Angel Gonzalez, Ignacio Fernandez
Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.
Type:
Application
Filed:
September 21, 2004
Publication date:
February 10, 2005
Applicant:
POLIMERI EUROPA S.p.A.
Inventors:
Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
Abstract: Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus.
Abstract: Unexpected corrosion of downstream sections of a dialkyl carbonate manufacturing apparatus has been traced to alkyl chloroformate impurities, which slowly decompose to yield hydrochloric acid. An improved process and apparatus for dialkyl carbonate synthesis reduce corrosion by physically removing or chemically decomposing the alkyl chloroformate impurities within the corrosion-resistant upstream sections of the apparatus. The alkyl chloroformate may be decomposed by passing it through a passageway at a temperature of about 30 C to about 130° C. for a time of about 0.5 hour to about 10 hours. The passageway may include one or more holding vessels or a tubular section that promotes plug flow.
Type:
Application
Filed:
December 22, 2003
Publication date:
February 10, 2005
Applicant:
POLIMERI EUROPA S.p.A.
Inventors:
Daniele Delledonne, Franco Rivetti, Eugene Boden, Ganesh Kailasam, Larry Lewis, Alberto Nisoli, John Ofori, Angel Gonzalez, Ignacio Fernandez
Abstract: New polycyclic cyclopentadiene compounds having the formula (II) wherein the various substituents and symbols R1, R2, R3, R4, R5, R6, R7, Z1 and Z2 and “n” have the meaning specified in the description.
Type:
Grant
Filed:
March 20, 2001
Date of Patent:
January 18, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Paolo Biagini, Diego Vigliarolo, Giampietro Borsotti, Roberto Santi
Abstract: The present invention relates to a process for the preparation of zeolitic catalysts of the MFI type in spheroidal form. The process consists in emulsifying and consolidating in paraffinic hydrocarbons, in the presence of a non-ionic surface-active agent or a suitable combination of a non-ionic surface-active agent and a cationic surface-active agent, a dispersion of particles of zeolitic material of the MFI type in a silica sol.
Type:
Grant
Filed:
November 18, 2002
Date of Patent:
January 4, 2005
Assignee:
Polimeri Europa S.p.A.
Inventors:
Luigi Balducci, Leonardo Dalloro, Alberto Cesana, Roberto Buzzoni
Abstract: A metallocene compound of a metal M of group 4 in the table of elements, comprising a cyclopentadienyl group and at least one oligomeric group R′ bonded to M, having the following formula (II):
-(AxDyUz)RI (II)
wherein:
A represents any monomeric unit deriving from a vinylaromatic group polymerizable by means of anionic polymerization, having from 6 to 20 carbon atoms;
D represents any monomeric unit deriving from a conjugated diolefin polymerizable by means of anionic polymerization, having from 4 to 20 carbon atoms;
U represents any generic optional monomeric unit deriving from an unsaturated compound copolymerizable with any of the above conjugated diolefins D or vinylaromatic compounds A;
RI represents hydrogen or a hydrocarbyl group having from 1 to 20 carbon atoms,
each index “x” and “y” can be independently zero or an integer, provided the sum (x+y) is equal to or higher than 2, preferably between 2 and 50, more preferably between 2 and 25;
“z
Type:
Grant
Filed:
September 26, 2003
Date of Patent:
December 21, 2004
Assignee:
Polimeri Europa S.p.A.
Inventors:
Francesco Masi, Anna Sommazzi, Giampietro Borsotti, Evelina Ballato, Roberto Santi
Abstract: A process is described for the hydrogenation of olefin double bonds present in polymers and copolymers of conjugated dienes, which comprises putting the above polymer or copolymer of conjugated dienes in contact with hydrogen in an inert solvent, in the presence of a catalytic system, characterized in that the above catalytic system essentially consists of one or more titanium compounds selected from those having general formula (I)
wherein:
M is selected from Ti(III) and Ti(IV) and their mixtures.
Type:
Grant
Filed:
September 24, 2003
Date of Patent:
December 14, 2004
Assignees:
ENI S.p.A., Polimeri Europa S.p.A.
Inventors:
Francesco Masi, Anna Sommazzi, Roberto Santi
Abstract: Catalytic composition for the (co)polymerization of ethylene and other &agr;-olefins, including a metallocene complex of a metal M of group 4 of the periodic table or the product obtainable from the same combined with a suitable activator, wherein said metallocene complex includes at least one cyclopentadienyl group and at least one unsaturated hydrocarbyl organic group bonded to the metal M, having the following formula (I):
-(AxDyUz)RI (I)
wherein:
A represents any monomeric unit deriving from a vinylaromatic group polymerizable by means of anionic polymerization, having from 6 to 20 carbon atoms;
D represents any monomeric unit deriving from a conjugated diolefin polymerizable by means of anionic polymerization, having from 4 to 20 carbon atoms;
U represents any generic optional monomeric unit deriving from an unsaturated compound co-polymerizable with any of the above conjugated diolefins D or vinylaromatic compounds A;
RI represents hydrogen or a hydrocarbyl group having from 1 to 20 car
Type:
Grant
Filed:
September 26, 2003
Date of Patent:
December 14, 2004
Assignee:
Polimeri Europa S.p.A.
Inventors:
Francesco Masi, Anna Sommazzi, Roberto Santi