Patents Assigned to Montedison S.p.A.
  • Patent number: 5539067
    Abstract: Disclosed are catalysts for the polymerization of alpha-olefins which comprise the reaction product of:(a) an Al alkyl compound;(b) a silicon compound containing at least a Si--OR or Si--OCOR or Si--NR.sub.2 bond, R being a hydrocarbyl radical;(c) a solid comprising, as essential support, a Mg dihalide in active form and, supported thereon, a Ti halide or a halo-Ti-alcoholate and a particular, selected type of electron-donor compound.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: July 23, 1996
    Assignee: Montedison S.p.A.
    Inventors: Sandro Parodi, Roberto Nocci, Umberto Giannini, Pier C. Barbe', Umerto Scata'
  • Patent number: 5382626
    Abstract: This invention relates to crosslinkable polymeric compositions and a process for preparing them which show a low content of vinyl monomers, are suitable for the fabrication of composite materials, have good mechanical properties, and comprise: a liquid polyisocyanate; a polyol having a maximum functionality of 7 and an average molecular weight of from about 200 to about 10,000; an unsaturated polyester or a vinylester resin; a radical polymerization initiator stable at temperatures below 70.degree. C.; a decomposition promoter for the initiator; a trimerization catalyst for the isocyanate; and optionally, a mineral filler having dehydrating properties.
    Type: Grant
    Filed: March 8, 1991
    Date of Patent: January 17, 1995
    Assignee: Montedison S.p.A.
    Inventors: Lino Credali, Paolo Cioni, Kurt C. Frisch, Jiri E. Kresta, Fushu Fu
  • Patent number: 5185401
    Abstract: Functional polyolefins containing a terminal functional group; the block copolymers that can be obtained from such polyolefins by reaction with polymers reactive with the functional groups and the precursors used for the preparation of the functionalized polyolefins, which are made of olefin polymers terminated at one end with ZnR groups where R is an alkyl or aryl radical with 1-10 carbon atoms.
    Type: Grant
    Filed: April 2, 1992
    Date of Patent: February 9, 1993
    Assignees: Ausimont S.R.L., Himint Incorporated, Montedison S.P.A.
    Inventors: Gabriele Rendina, Enrico Albizzati
  • Patent number: 5155282
    Abstract: New perfluoropolyethers comprising repeating units chosen from among ##STR1## statistically distributed along the chain, having a controlled molecular weight and brominated end groups, prepared starting from the product of the photochemical oxidation of C.sub.2 F.sub.4, and/or C.sub.3 F.sub.6, containing peroxidic oxygen, and subsequent treatment in liquid phase with bromine, at temperatures ranging from -40.degree. to 130.degree. C. in the presence of ultraviolet radiations, said new perfluoropolyethers derivatives being useful as additives in rubber mixes vulcanizable with peroxides, in amounts of 0.01 to 5 parts by w per 100 parts by weight of elastomer, optionally in combination with non brominated perfluoropolyethers, to improve the processability in the extrusion and the detachability of the vulcanized articles from the molding.
    Type: Grant
    Filed: October 30, 1990
    Date of Patent: October 13, 1992
    Assignees: Ausimont S.p.A., Montedison S.p.A.
    Inventors: Giuseppe Marchionni, Gian T. Viola, Giulio Tommasi, Raffaele Ferro, Gianna Cirillo
  • Patent number: 5145626
    Abstract: Process for the continuous manufacture of thermomoldable thermoplastic composite materials comprising feeding simultaneously on a conveyor belt a granulated thermoplastic polymer together with a reinforcement selected from natural, artificial and synthetic fibers, and compacting and heating under pressure the thus-obtained mixture.
    Type: Grant
    Filed: March 13, 1991
    Date of Patent: September 8, 1992
    Assignee: Montedison S.p.A.
    Inventors: Catia Bastioli, Gianfranco Del Tredici
  • Patent number: 5142005
    Abstract: A process for the production of primarily syndiotactic vinyl aromatic polymers by polymerizing or copolymerizing vinyl aromatic monomers such as styrene or styrene derivatives in the presence of a catalyst system comprising the product of the reaction between:a) a compound of a transition metal (M) different from titanium and containing at least a bond M-O, M-C, M-N, M-P, M-S or M-halogen, andb) an organoaluminum compound containing at least an oxygen atom bound to the aluminum atom or bound between two aluminum atoms.Compound a) can be used as such or may be supported on a suitable carrier.
    Type: Grant
    Filed: December 15, 1987
    Date of Patent: August 25, 1992
    Assignee: Montedison S.p.A.
    Inventors: Enrico Albizzati, Umberto Giannini, Giovanni Giunchi, Romano Mazzocchi, Luigi Resconi
  • Patent number: 5084540
    Abstract: Crystalline copolymers of ethylene and alpha-olefins CH.sub.2 .dbd.CHR in which R is an alkyl group having 2 to 8 carbon atoms, containing 0.5 to 3% by moles of polymerized alpha-olefin and having a density lower than 0.945 g/cc are obtained by polymerizing, in the gas phase, mixtures of ethylene and the alpha-olefins in contact with catalysts prepared from (1) Ti compounds supported on Mg halides and (2) organometallic compounds, which are active in the polymerization of ethylene but exhibit little, if any, activity in the homo- or copolymerization of the alpha-olefins.
    Type: Grant
    Filed: November 20, 1990
    Date of Patent: January 28, 1992
    Assignee: Montedison S.p.A.
    Inventors: Enrico Albizzati, Umberto Zucchini, Arrigo Soverini, Illaro Cuffiani
  • Patent number: 5083082
    Abstract: Perfluoropolyethers having an average molecular weight higher than 390 and respectively having a kinematic viscosity lower than 8.5 cSt (at 20.degree. C.), and such as to distill by not more than 10% at temperatures lower than 140.degree. C., and by at least 90% at temperatures not higher than 260.degree. C., or, in the case in which the perfluoropolyether does not contain CF (CF.sub.3) CF.sub.2 O units, having a viscosity lowr than 18 cSt (at 20.degree. C.), and such as to distill by not more than 10% at temperatures lower than 140.degree.C., and by at elast 90% at temperatures not higher than 280.degree. C., are used as the only high-temperature and low-temperature working fluid in the Thermal Shock Tests to which the electronic components are submitted, and at the same time are advantageously used in other tests used in the electronic industry, such as the Gross Leak Test and the Burn in Test, allowing the operators in this field to use only single fluid for a whole set of uses.
    Type: Grant
    Filed: April 24, 1990
    Date of Patent: January 21, 1992
    Assignee: Montedison S.p.A.
    Inventors: Gianangelo Bargigia, Gerardo Caporiccio, Claudio Tonelli, Luciano Flabbi, Giuseppe Marchionni
  • Patent number: 5082817
    Abstract: Catalysts for the polymerization of olefins, obtained by means of the reaction of:a) a compound of a transition metal containing at least one metal-halogen linkage, supported on a magnesium halide in the active form, withb) a compound of Ti, Zr or Hf, containing at least one metal-carbon linkage.
    Type: Grant
    Filed: January 15, 1991
    Date of Patent: January 21, 1992
    Assignees: Ausimont S.r.l., Hilmont Incorporated, Montedison S.p.A.
    Inventors: Enrico Albizzati, Luigi Resconi
  • Patent number: 5081141
    Abstract: Disclosed are compounds having the formula: ##STR1## wherein: m=0, 1;n=0, 1;Z=CH, N;R.sub.1 is selected from chlorine, bromine, fluorine, CF.sub.3, phenyl, C.sub.1 -C.sub.2 -alkoxy, C.sub.1 -C.sub.2 -haloalkoxy, alkylthio, and haloalkylthio, wherein the halogen is Cl, Br, F;R.sub.2 is H, fluorine, chlorine, or bromine;R.sub.3 represents H, CH.sub.3, CN, or also F when m=1 or when n=1 and R.sub.4, R.sub.5 are H;R.sub.4, R.sub.5 are independently H or F;R.sub.3 and R.sub.4, furthermore, when m=0, may represent, taken together, a second bond between the two carbon atoms to which they are linked in formula (I); andR.sub.f is selected from the group consisting of polyfluoroalkyls, polyfluoroalkenyls and polyfluoroalkynyls containing up to 4 carbon atoms, containing at least 2 F atoms and, optionally, other halogens selected from Cl and Br.Anti-fungal compositions containing these new compounds.
    Type: Grant
    Filed: July 6, 1990
    Date of Patent: January 14, 1992
    Assignee: Montedison S.p.A.
    Inventors: Roberto Colle, Francesco Corda, Giovanni Camaggi, Franco Gozzo, Luigi Mirenna, Carlo Garavaglia
  • Patent number: 5055547
    Abstract: The present invention relates to copolyethers comprising copolymers of 7,oxa-bicyclo(2,2,1)heptane, and its alkyl-derivatives, with one or more single-ring or condensed-rings cycloaliphatic ethers, comprising the characteristic group; ##STR1## wherein R' is hydrogen and R" is H, a halogen, or an alkyl radical containing a small number of carbon atoms, and which may also be halogen-substituted.If the ether contains one ring only, it contains from 5 to 12 atoms in the ring, and if it contains a condensed-ring system, it contains a total number of from 10 to 18 atoms in the rings.Those copolyethers show a anisotropic behaviour in the molten state, and therefore have liquid-crystal properties.
    Type: Grant
    Filed: May 10, 1989
    Date of Patent: October 8, 1991
    Assignee: Montedison S.p.A.
    Inventors: Leonardo Fiore, Giuseppe Motroni, Mauro Maritano
  • Patent number: 5043483
    Abstract: Process for the alkylation of phenols comprising reacting a phenol with a vinyl-aromatic hydrocarbon in the presence of an acidic catalyst and of a solvent.
    Type: Grant
    Filed: November 28, 1988
    Date of Patent: August 27, 1991
    Assignee: Montedison S.p.A.
    Inventors: Loris Sogli, Raffaele Ungarelli, L. Lawrence Chapoy
  • Patent number: 5036094
    Abstract: Disclosed are compounds, having the general formula: ##STR1## wherein: m=0, 1, 2; n=0, 1 with the condition that when m=0, also n=0;p=0, 1; q=1, 2;X is either oxygen or sulphur;A=N, CH;R is H, CH.sub.3, F;R.sub.1 is selected from chlorine, bromine, fluorine, CF.sub.3, phe=nyl, C.sub.1 -C.sub.2 -alkoxy, C.sub.1 -C.sub.2 -haloalkoxy, alkylthio, haloalkyl=thio, wherein the halogen is Cl, Br, F;R.sub.2 is selected from H, chlorine, bromine, fluorine;R.sub.f is selected from the group formed by alkyls containing from 2 to 4 carbon atoms, and containing at least 4 atoms of halogen selected from F, Cl and Br, of which at least 3 are F atoms; alkenyls and alkynyls containing up to 4 carbon atoms, containing at least 2 F atoms and, optionally, other halogens selected between Cl and Br.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: July 30, 1991
    Assignee: Montedison S.p.A.
    Inventors: Roberto Colle, Giovanni Camaggi, Franco Gozzo, Giuseppina Ratti, Luigi Mirenna, Carlo Garavaglia
  • Patent number: 5032673
    Abstract: The present invention relates to copolyethers constituted by copolymers of 7,oxa-bicyclo(2,2,1)heptane, and its alkyl-derivatives, with one or more cycloaliphatic ethers, comprising from 2 to 4 carbon atoms in their ring.These copolyethers show an anisotropic behavior in the molten state, and therefore are endowed with liquid-crystal properties.
    Type: Grant
    Filed: May 8, 1989
    Date of Patent: July 16, 1991
    Assignee: Montedison S.p.A.
    Inventors: Leonardo Fiore, Giuseppe Motroni, Mauro Maritano
  • Patent number: 5026786
    Abstract: New perfluoropolyethers comprising repeating units chosen from among ##STR1## statistically distributed along the chain, having a controlled molecular weight and brominated end groups, prepared starting from the product of the photochemical oxidation of C.sub.2 F.sub.4, and/or C.sub.3 F.sub.6, containing peroxidic oxygen, and subsequent treatment in liquid phase with bromine, at temperatures ranging from -40 to 130.degree. C. with the presence of ultraviolet radiations, said new perfluoropolyethers derivatives being useful as additives in rubber mixes vulcanizable with peroxides, in amounts of 0.01 to 5 parts by w per 100 parts by weight of elastomer, optionally in combination with non brominated perfluoropolyethers to improve the processability in the extrusion and the detachability of the vulcanized articles from the molding.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: June 25, 1991
    Assignees: Ausimont S.p.A., Montedison S.p.A.
    Inventors: Giuseppe Marchionni, Gian T. Viola, Giulio Tommasi, Raffaele Ferro, Gianna Cirillo
  • Patent number: 5023801
    Abstract: An interface circuit to the output of a programmable voltage ramp generator for decreasing the minimum voltage step of such a generator having two voltage channels and a minimum voltage step greater than 1 millivolt. The interface circuit receives an input from each of the two voltage channels (V.sub.2, V.sub.3), along with an inserted voltage (V.sub.1). The circuit includes a summing amplifier for (i) compressing the minimum voltage step from one voltage channel (V.sub.2) by a factor equal to or greater than such minimum voltage step, (ii) adding the voltage from the other channel (V.sub.3) to the compressed voltage, and (iii) subtracting the inserted voltage (V.sub.1) (or adding an inserted voltage which is negative). The inserted voltage (V.sub.1) is equal in magnitude to the maximum output value from the voltage channel that has the voltage compressed (V.sub.2). The output of the summing amplifier (V.sub.out) may be represented by:V.sub.out =(V.sub.3 /X)+(V.sub.2 /Y)+(V.sub.
    Type: Grant
    Filed: March 15, 1989
    Date of Patent: June 11, 1991
    Assignees: Montedison S.p.A., Consiglo Nazionale Delle Ricerche
    Inventors: Adriano Mattera, Roberto Fornari, Renato Magnanini, Carolo Paorici, Lucio Zanotti, Giovanni Zuccalli
  • Patent number: 5017678
    Abstract: Melt-formable thermotropic liquid crystalline polymers containing groups derived from terephthalic acid and a mixture of phenyl hydroquinone, 2-(.alpha.-phenylisopropyl) hydroquinone and, if desired, 2,5 bis (.alpha.-phenylisopropyl) hydroquinone.
    Type: Grant
    Filed: June 4, 1990
    Date of Patent: May 21, 1991
    Assignee: Montedison S.p.A.
    Inventors: Umberto Giannini, Alfredo Coassolo, Marco Foa', Giampiero Sabarino, L. Lawrence Chapoy
  • Patent number: 5015721
    Abstract: Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxy aromatic acid having the formula:HOOC--Ar.sub.1 --O--Ar.sub.2 --COOH (1)wherein Ar.sub.1 and Ar.sub.2 are aromatic radicals from aromatic diols, and, possibly, from other diacids and/or hydroxy acids.
    Type: Grant
    Filed: November 7, 1989
    Date of Patent: May 14, 1991
    Assignee: Montedison S.p.A.
    Inventors: Giorgio Gabrielli, Mauro Maritano, Giuseppe Motroni, L. Lawrence Chapoy
  • Patent number: 5015694
    Abstract: Polyolefinic compositions endowed with a high impact strength, comprising:(a) 35-45% by weight of a C.sub.2 /C.sub.3 copolymer containing from 4 to 10% by weight of C.sub.2 and exhibiting a melt flow rate (M.F.R.) from 10 to 20 g/10 minutes at 230.degree. C. and 2.16 kg;(b) 35-45% by weight of a C.sub.2 /C.sub.3 copolymer containing from 4 to 10% by weight of C.sub.2 and exhibiting a M.F.R. from 35 to 45 g/10 minutes at 230.degree. C. and 2.16 kg;(c) 10-30% by weight of a C.sub.2 /C.sub.3 /(diene) elastomer containing from 40 to 55% by weight of C.sub.3 and from 0 to 5% by weight of a diene monomer, which is amorphous to X-rays and is characterized by:.alpha..sub.2 +.alpha..sub.4 higher than 16%R.sub.1 .times.R.sub.2 lower than 0.5M.W.D. lower than 3Mooney viscosity (ML 1+4, 100.degree. C.) from 30 to 38.vertline..eta..vertline. from 1.5 to 2 dl/g, measured in tetrahydronaphthalene at 135.degree. .
    Type: Grant
    Filed: September 24, 1990
    Date of Patent: May 14, 1991
    Assignee: Montedison S.p.A.
    Inventors: Federico Milani, Paola Massari, Domenico Lori
  • Patent number: 5013819
    Abstract: Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinone mono- and possibly di-substituted with aralkyl groups.
    Type: Grant
    Filed: November 2, 1989
    Date of Patent: May 7, 1991
    Assignee: Montedison S.P.A.
    Inventors: Alfredo Coassolo, Marco Foa', L. Lawrence Chapoy