Patents by Inventor Luciano Luciani
Luciano Luciani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20020028743Abstract: Procedure for the preparation of a solid carrier for olefin polymerization catalysts comprising the steps:Type: ApplicationFiled: October 5, 2001Publication date: March 7, 2002Inventors: Luciano Luciani, Wolfgang Neibl, Norbert Hafner
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Patent number: 6165928Abstract: Procedure for the preparation of a solid catalyst component which is active in the polymerization of olefins, comprising the steps:a) contacting a dehydrated silica support with a solution of Mg-halide or Mg-alkyl-halide or a mixture of both, optionally in the presence of and Ti-alkoxyde or Ti-halogen-alkoxyde or a mixture of both,b) contacting the catalyst-precursor obtained in (a) with Mg-alkyl or Mg-alkyl-halide or a mixture of both, optionally in presence of electron-donors (Lewis bases),c) halogenating the catalyst-precursor obtained in (b) by contact of said activated support with halogenating agents,d) titanating the catalyst-precursor obtained in (c) with Ti-tetrahalide in the presence of electron-donors,e) recovering the solid catalyst-component from the reaction products of step (d).The catalyst component, which is obtained according to the above procedure, may also be used together with Al-trialkyl or Al-alkyl-halides and a Lewis base, as a catalyst for the polymerization of olefins.Type: GrantFiled: December 2, 1996Date of Patent: December 26, 2000Assignee: Borealis G.m.b.H.Inventors: Luciano Luciani, Wolfgang Neissl, Birgit Wenidoppler
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Patent number: 6127305Abstract: An active catalyst in the polymerization of alpha-olefins is obtained by:(i) bringing a dialkyl magnesium, or an alkyl magnesium halide into contact with a silicon or tin halide, in solution in an inert organic solvent, until a granular solid precipitates off;(ii) suspending said solid precipitate in an inert organic solvent and bringing it into contact with a compound which can be defined by the formula: ##STR1## wherein M represents a metal from Group IVB of the Periodic Table of Elements, and each R and C.sub.p has the meaning as reported in the disclosure, in order to form a granular solid catalyst; and(iii) recovering said solid catalyst from the resulting suspension.Type: GrantFiled: October 3, 1996Date of Patent: October 3, 2000Assignee: Enichem S.p.AInventors: Federico Milani, Luciano Luciani, Bruno Pivotto, Antonio Labianco
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Patent number: 6103655Abstract: Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps:a) impregnating a silica with Mg-chloride solubilized in ethylbenzoate, in the presence of further electron donors,b) optionally drying the impregnated silica obtained in (a) and impregnating it with a solution of Mg-alkyls in SiCl.sub.4 at a temperature from -10 to 20.degree. C. and subsequently treating the obtained slurry at a temperature from 40.degree. C. to reflux temperature, optionally adding a further amount of electron donors,c) drying the obtained carrier.The carrier which is obtained according to the above procedure is advantageously used for the preparation of supported catalysts for the polymerization of olefins.Type: GrantFiled: February 13, 1998Date of Patent: August 15, 2000Assignee: Borealis GmbHInventors: Luciano Luciani, Wolfgang Neissl, Norbert Hafner
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Patent number: 6096681Abstract: Procedure for the preparation of a solid carrier for olefin polymerization catalysts, comprising the steps:a) impregnating a silica with a solution of Mg-chloride in the presence of electron donors,b) drying the impregnated silica obtained in (a) and impregnating it with a solution of Mg-alkyls in SiCl.sub.4 at a temperature from -10 to 20.degree. C., optionally adding a further amount of electron donors,c) subsequently treating the slurry obtained in (b) at a temperature from 40.degree. C. to reflux temperature,d) drying the carrier obtained in (c).Type: GrantFiled: February 13, 1998Date of Patent: August 1, 2000Assignee: Borealis GmbHInventors: Luciano Luciani, Wolfgang Neissl, Norbert Hafner
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Patent number: 6028149Abstract: Procedure for the preparation of a solid catalyst component which is active in the polymerization of olefins, comprising the steps:a) contacting a silylated silica support with a solution of Mg-halide or Mg-alkyl-halide or a mixture of both and Ti-alkoxide or Ti-halogen-alkoxide or a mixture of both, optionally in the presence of Ti-tetrahalide,b) contacting the catalyst-precursor obtained in (a) with Mg-alkyl or Mg-alkyl-halide or a mixture of both, optionally in presence of Lewis base,c) halogenating the catalyst-precursor obtained in (b) by contact of said activated support with halogenating agents,d) titanating the catalyst-precursor obtained in (c) with Ti-tetrahalide in the presence of electron-donors,e) recovering the solid catalyst-component from the reaction products of step (d).The catalyst component, which is obtained according to the above procedure, may also be used together with Al-trialkyl or Al-alkyl-halides and a Lewis base, as a catalyst for the polymerization of olefins.Type: GrantFiled: September 30, 1996Date of Patent: February 22, 2000Assignee: PCD Polymere Gesellschaft m.b.H.Inventors: Luciano Luciani, Wolfgang Neissl, Birgit Wenidoppler
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Patent number: 5739224Abstract: Procedure for the preparation of a solid catalyst component which is active in the polymerization of olefins, comprising the steps:a) contacting a silylated silica support with a solution of Mg-halide or Mg-alkyl-halide or a mixture of both,b) contacting the catalyst-precursor obtained in (a) with Mg-alkyl or Mg-alkyl-halide or a mixture of both, optionally in presence of electron-donors (Lewis bases),c) halogenating the catalyst-precursor obtained in (b) by contact of said activated support with halogenating agents,d) titanating the catalyst-precursor obtained in (c) with Ti-tetrahalide in the presence of electron-donors,e) recovering the solid catalyst-component from the reaction products of step (d).The catalyst component, which is obtained according to the above procedure, may also be used together with Al-trialkyl or Al-alkyl-halides and a Lewis base, as a catalyst for the polymerization of olefins.Type: GrantFiled: November 8, 1996Date of Patent: April 14, 1998Assignee: PCD Polymere Gesellschaft m.b.H.Inventors: Luciano Luciani, Wolfgang Neissl, Birgit Wenidoppler
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Patent number: 5529966Abstract: A catalyst active in the polymerization of alpha-olefins is formed by:(a) a bis(cyclopentadienyl) bis(amide) derivative of an element of Group IVB of the Periodic Table of the Elements, to be defined by means of the formula: ##STR1## wherein M represents a metal of Group IVB, each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4, and Cp have the same meaning as reported in the disclosure, and(b) an aluminoxane co-catalyst.This catalyst finds use in the processes of ethylene and other alpha-olefins polymerization and copolymerization.Type: GrantFiled: October 21, 1993Date of Patent: June 25, 1996Assignee: Enichem S.p.A.Inventors: Luciano Luciani, Federico Milani, Liliana Gila, Evelina Ballato
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Patent number: 5521135Abstract: A solid component of catalyst for the (co)polymerization of ethylene is composed of a silica carrier and a catalytically active part including titanium, magnesium, chlorine and alkoxylic groups and is obtained: by suspending an activated silica in a solution of magnesium chloride and titanium tetraalcoholate in a liquid aliphatic acid ester; eliminating the aliphatic acid ester from the resulting suspension to recover a solid; and making this solid react with an aluminium alkyl chloride. It is preferable to add also some measured quantities of a silicon halide to the solution in aliphatic acid ester.Type: GrantFiled: December 14, 1993Date of Patent: May 28, 1996Assignee: ECP Enichem Polimeri s.r.l.Inventors: Luciano Luciani, Maddalena Pondrelli, Renzo Invernizzi, Italo Borghi
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Patent number: 5348925Abstract: A solid component of catalyst, active in the polymerization of propylene and other .alpha.-olefins in stereoregular polymers, is obtained:(i) by treating a non-activated silica support in particles with a tin tetrahalide, to at least partially block the hydroxylic groups of the silica and to obtain a blocked silica;(ii) by impregnating the blocked silica with magnesium dialkyl or magnesium alkyl halide to make the magnesium compound react with the tin compound and with possible residual hydroxylic groups of the silica and to obtain a support;(iii) by halogenating the support by contact with a halogenating agent selected from the halides of tin, antimonium or silicon to obtain a halogenated support;(iv) by titanating the halogenated support with an excess of a titanium tetrahalide to obtain a titanated support;(v) by putting the titanated support in contact with a Lewis base, to obtain a solid component of catalyst.Type: GrantFiled: February 22, 1993Date of Patent: September 20, 1994Assignee: ECP Enichem Polimeri S.r.l.Inventors: Federico Milani, Luciano Luciani, Antonio Labianco
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Patent number: 5320995Abstract: A catalyst for the polymerization of olefins, containing magnesium, chlorine, aluminium and at least one transition metal, in a dispersed or emulsified form within an inert diluent, is obtained by:contacting, in an inert diluent, a magnesium dialkyl and aluminium trichloride, in a molar ratio equal or almost equal to 2/1, at a temperature lower than 105.degree. C. to obtain a catalyst precursor in a suspended form, or at a temperature higher than 105.degree. C. to form a catalyst precursor in the form of a colloidal emulsion, in the diluent used; andcontacting said suspended or emulsified precursor with at least one compound of a transition metal to form a catalyst in the form of a suspension or emulsion respectively.Type: GrantFiled: October 5, 1992Date of Patent: June 14, 1994Assignee: ECP Enichem Polimeri S.r.l.Inventors: Luciano Luciani, Mario Polesello, Federico Milani, Renzo Invernizzi, Giovanni Soverini
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Patent number: 5298474Abstract: A solid component of catalyst for the (co)polymerization of ethylene is composed of a silica support and of a catalytically active part containing titanium, magnesium, chlorine and alkoxy groups, and is obtained by:(i) activating a silica support by contact with a solution of magnesium dialkyl, or magnesium alkyl chloride, in a liquid, aliphatic hydrocarbon solvent;(ii) impregnating the activated silica with a solution, in a liquid aliphatic or aromatic ester, of titanium tetrachloride and tetra-alkoxide in equimolecular or almost equimolecular quantities, and magnesium chloride; and(iii) treating the solid obtained in step (ii) with a proportioned quantity of aluminium alkyl sesquichloride.Type: GrantFiled: July 10, 1992Date of Patent: March 29, 1994Assignee: ECP Enichem Polimeri S.r.l.Inventors: Luciano Luciani, Federico Milani, Renzo Invernizzi, Maddalena Pondrelli
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Patent number: 5296432Abstract: Solid component of catalyst for the (co)polymerization of ethylene, including magnesium, halogen and titanium, obtained by:(i) dissolution, in an inert organic solvent, of a magnesium dialkyl, or a magnesium alkyl halide, a tin halide (IV) and possibly also an alkyl halide and their contact until a granular solid precipitates from the solution;(ii) contact of said granular solid and its interaction with a titanium halide, alkoxide or halo-alkoxide, to form a solid component of catalyst.Type: GrantFiled: July 9, 1992Date of Patent: March 22, 1994Assignee: ECP Enichem Polimeri S.r.l.Inventors: Federico Milani, Luciano Luciani, Maddalena Pondrelli
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Patent number: 5278117Abstract: A supported Ziegler-Natta catalyst active in ethylene polymerization and in the copolymerization of ethylene with alpha-olefins consists of:(A) a cocatalyst in the form of an organometallic compound of aluminium, and(B) a solid catalyst component obtained by:(i) impregnating a granular solid support with a solution of a titanium alcoholate and magnesium chloride in a liquid aliphatic hydrocarbon, followed by evaporation of the hydrocarbon solvent;(ii) impregnating the support treated in (i) with a solution of magnesium chloride in a liquid aliphatic ester, followed by evaporation of the ester solvent; and(iii) activating the support treated in (ii) by contact with an alkyl aluminium halide.In a preferred embodiment, measured quantities of a silicon halide are introduced in stage (i) and/or (ii), this considerably improving catalytic activity.Type: GrantFiled: March 8, 1991Date of Patent: January 11, 1994Assignee: Montedipe S.r.l.Inventors: Luciano Luciani, Renzo Invernizzi, Francesco Masi, Maddalena Pondrelli, Mario Polesello, Italo Borghi
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Patent number: 5270275Abstract: A solid component of catalyst for the (co)polymerization of ethylene, including magnesium, halogen and titanium, is prepared:(i) by dissolving a magnesium dialkyl, a silicon halide and at times also an alkyl halide, in an inert organic solvent and maintaining contact until a granular solid precipitates;(ii) putting this granular solid in contact and making it react with a titanium halide, alkoxide or halogen-alkoxide, to produce a solid component of catalyst; and(iii) activating this solid component of catalyst by contact with aluminium alkyl halide, if a titanium alkoxide or halogen-alkoxide has been used in phase (ii).Type: GrantFiled: October 9, 1991Date of Patent: December 14, 1993Assignee: Ecp Enichem Polimeri S.R.L.Inventors: Luciano Luciani, Federico Milani, Maddalena Pondrelli, Italo Borghi, Renzo Invernizzi
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Patent number: 5258342Abstract: A process for the preparation of a solid component of a catalyst active in the (co)polymerization of ethylene and able to form (co)polymers of ethylene having from middle to wide distribution of molecular weight and monomodal distribution of molecular weights, in processes operating in a single step, in suspension or in the gaseous phase. Said solid component of a catalyst contains magnesium, chlorine, silicon, titanium and at least another transition metal on a solid, granular and porous carrier and is obtained by treating the carrier, in succession, with: a compound of a metal selected from hafnium, zirconium or vanadium; a magnesium dialkyl or magnesium alkyl halide; a silicon chloride; and a titanium compound.Type: GrantFiled: February 26, 1992Date of Patent: November 2, 1993Assignee: ECP Enichem Polimeri S.R.L.Inventors: Luciano Luciani, Federico Milani, Maddalena Pondrelli, Renzo Invernizzi
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Patent number: 5227439Abstract: A solid component of catalyst for the (co)polymerization of ethylene is composed of a silica carrier and a catalytically active part which includes titanium, magnesium, chlorine and also alkoxy groups, and is obtained: by suspending an activated silica in an ethanolic solution of magnesium chloride; by contact of the suspension with an alkoxy or halogen alkoxyde of titanium and with a silicon halide; by eliminating the ethanol from the resulting suspension in order to recover a solid matter; and by making this solid react with an aluminium alkyl chloride.Type: GrantFiled: July 20, 1992Date of Patent: July 13, 1993Assignee: Ecp Enichem Polimeri s.r.l.Inventors: Luciano Luciani, Maddalena Pondrelli, Renzo Invernizzi, Italo Borghi
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Patent number: 5188997Abstract: A solid component of a catalyst for the (co)polymerization of ethylene is composed of a silica carrier and a catalytically active part which includes titanium, magnesium, chlorine and also alkoxy groups, and is obtained: by suspending an activated silica in an ethanolic solution of magnesium chloride; by contact of the suspension with an alkoxy or halogen alkoxyde of titanium and with a silicon halide; by eliminating the ethanol from the resulting suspension in order to recover a solid matter; and by making this solid react with an aluminum alkyl chloride.Type: GrantFiled: September 5, 1991Date of Patent: February 23, 1993Assignee: ECP Enichem Polimeri s.r.l.Inventors: Luciano Luciani, Maddalena Pondrelli, Renzo Invernizzi, Italo Borghi
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Patent number: 5173465Abstract: A solid catalyst component for ethylene (co)polymerization, consisting of a particulate silica support and a catalytically active part containing titanium, magnesium, chlorine and alkoxy groups is obtained by a) preparing a solution of magnesium chloride in ethanol; b) impregnating particulate silica with said solution; c) eliminating the unabsorbed ethanol from the suspension; d) eliminating absorbed ethanol from the solid; e) interacting the resultant solid with a titanium chloride, alkoxide or chloroalkoxide; and possibly interacting with an alkylaluminium chloride. In a preferred embodiment in stage e), a silicon halide is added to improve the catalyst activity.Type: GrantFiled: June 14, 1991Date of Patent: December 22, 1992Assignee: Montedipe S.r.l.Inventors: Luciano Luciani, Maddalena Pondrelli, Renzo Invernizzi
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Catalyst component for alpha olefine-polymerizing catalysts and procedure for manufacturing the same
Patent number: 4780438Abstract: A catalyst component for alpha olefine-polymerizing catalysts which comprise an organo-aluminum compound, an external electron donor, and a solid catalyst component obtained when a solid carrier component containing magnesium has reacted with a titanium halide compound, in addition to a procedure for manufacturing the same. The catalyst component is produced by reacting a solid carrier component with a titanium halide compound with or without the presence of an internal electron donor. The solid carrier component is prepared by(a) dissolving a natural or synthetic mineral containing magnesium and aluminum in hydrochloric acid,(b) evaporating the solution until dry,(c) calcinating the obtained salt mixture from the evaporated solution by heating the same at a temperature of about 130.degree.-150.degree. C.Type: GrantFiled: April 1, 1987Date of Patent: October 25, 1988Assignee: Neste OyInventors: Thomas Garoff, Barbro Lofgren, Luciano Luciani