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Montedison S.p.A. Patents
Assignee:
Montedison S.p.A.
Address:
Milan, IT
No. of patents:
470
Patents:


1 2 3 4 5 6 7 8 9 10










Patent Number Title Of Patent Date Issued
RE31099 Catalysts and catalyst components for polymerizing olefins December 7, 1982
New catalyst components comprising compounds containing titanium, magnesium and halogens, and catalysts for polymerizing olefins obtained by mixing said components with organometallic Al compounds are disclosed.
RE29721 Plastic bag and a protective container therefor and a fixture for securing the bag in the contai August 8, 1978
A package for bulk materials having a box-like protective container and a plastic bag liner, and means for securing the bag in the container by a triangularly shaped flap formed by a fold of the bag wall, said means comprising a channel member and an elongated metal strip adapted to be
5539067 Components and catalysts for the polymerization of olefins July 23, 1996
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
5185401 Monofunctional polymers of olefins and block copolymers obtained therefrom February 9, 1993
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
5155282 Perfluoropolyethers having brominated end groups and fluoroelastomers obtained therefrom October 13, 1992
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.
5145626 Process for the continuous manufacture of thermomoldable thermoplastic composite materials September 8, 1992
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 heat
5142005 Process for producing crystalline vinyl aromatic polymers having mainly a syndiotactic structure August 25, 1992
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 transitio
5084540 Ethylene/butene-1 copolymers January 28, 1992
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
5083082 Perfluoropolyethers used as fluids for testing in electronic field January 21, 1992
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 h
5082817 Catalysts for the polymerization of olefins January 21, 1992
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
5081141 Fungicidal azolyl-derivatives January 14, 1992
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 i
5055547 Liquid-crystal copolyethers based on 7-oxa-bicyclo(2,2,1)heptane October 8, 1991
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,
5043483 Process for the alkylation of phenols August 27, 1991
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.
5036094 Azolyl-derivatives endowed with antifungal activity July 30, 1991
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
5032673 Liquid-crystal copolyethers based on 7-oxa-bicyclo-(2,2,1)-heptane July 16, 1991
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, an
5026786 Perfluoropolyethers having brominated end groups and fluoroelastomers obtained therefrom June 25, 1991
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.
5023801 Programmable - voltage - generator interface for decreasing the minimum voltage step June 11, 1991
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 ch
5017678 Thermotropic liquid crystalline polymers May 21, 1991
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.
5015721 Thermotropic liquid-crystalline aromatic, polyesters May 14, 1991
Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxy aromatic acid having the formula:wherein Ar.sub.1 and Ar.sub.2 are aromatic radicals from aromatic diols, and, possibly, from other diacids and/or hyd
5013819 Liquid-crystalline, thermotropic aromatic polyesters May 7, 1991
Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinone mono- and possibly di-substituted with aralkyl groups.
5003028 Thermoplastic linear aromatic polyetherdiketones and process for obtaining same March 26, 1991
Thermoplastic linear aromatic polyetherdiketones containing repeating units of formula: ##STR1## wherein R is an arylene radical containing from 1 to 3 aromatic rings directly joined among them, or condensed, or joined by one or more of the following difunctional groups:
5002909 Mixed oxides of alumina and zirconia consisting essentially of spherical particles having a narr March 26, 1991
Mixed oxides of alumina and zirconia having a controlled granulometric distribution, consisting essentially of spherical, submicronic particles, wherein zirconia is distributed uniformly in alumina and may reach 38% by weight, said zirconia being in the stabilized form at room temperatur
4985533 Termotropic liquid-crystalline aromatic polyester from hydroquinone/substituted hydroquinone mix January 15, 1991
Thermotropic liquid-crystalline aromatic polyesters processable in the molten state, comprising units derived from at least one dicarboxylic aromatic acid and from mono- and di-substituted (1-phenyl-ethyl)-hydroquinones in admixture with hydroquinone, and/or hydroquinones substituted
4966957 Liquid-crystalline, thermotropic aromatic polyester from hydroquinone mixture October 30, 1990
Liquid-crystalline, thermotropic, aromatic polyesters processable in the molten state, comprising units derived from hydroquinones substituted with aryl, aralkyl and aroyl groups, and from phenoxy-hydroquinone.
4959434 Modified impact-resistant vinylaromatic copolymers September 25, 1990
Modified impact-resistant vinylaromatic copolymers containing from 2 to 10% by weight of an ethylenically unsaturated nutrile and from 0 to 30% by weight of alpha-methyl-styrene and having a gel content higher than 23%, a cracking resistance, in an olive oil/oleic acid mixture under a lo
4955726 Perfluoropolyethers used as fluids for testing in electronic field September 11, 1990
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 h
4952661 Thermotropic liquid crystalline polyester from 2,5-dihydroxybenzophenone August 28, 1990
Thermotropic liquid crystalline polyesters which can be processed in the molten state containing moieties derived from a dicarboxylic aromatic acid and 2,5-dihydroxybenzophenone eventually in a mixture with a substituted hydroquinones.
4943744 Differentiating logical circuit for asynchronous systems July 24, 1990
A differentiating circuit is disclosed for use in asynchronous networks which associates the transfer of information through the circuit with the occurrence of the acquisition of the information by a utilizing circuit. The circuit can be used as a differential signal producer or, in
4942233 Thermotropic di-s-triazinic derivatives July 17, 1990
Thermotropic di-s-triazinic derivatives are taught having the general formula: ##STR1## wherein: m is zero or an integer of from 1 to 5,n is an integer of from 5 to 30, andX is a halogen, such as chlorine, or a CH.sub.3 (CH.sub.2).sub.m O-- group.
4933290 Process for the enzymatic separation of the optical isomers of racemic oxazolidinonic derivative June 12, 1990
There is disclosed a process for the biotechnological resolution, by enzymatic esterification of the corresponding racemic mixture of the S(+) and R(-) optical isomers of the oxazolidinonic compounds having formula (I): ##STR1## wherein R represents a, linear or branched, C.sub.1
4931325 Manufactured articles based on isotactic polypropylene having a highly oriented structure June 5, 1990
This invention relates to composite manufactured articles formed by a set of uniaxially oriented isotatic polypropylene films, having a resistance to delamination of at least 0.4 kg/cm are prepared by heating under pressure a plurality of isotatic polypropylene films superimposed to each
4923955 Thermotropic liquid-crystalline aromatic polyesters of substituted 4,4'-dihydroxy-diphenylene May 8, 1990
Thermotropic liquid-crystalline aromatic polyesters of 4,4'-dihydroxy-diphenyl substituted with a halogen or with an alkyl, cycloalkyl, aryl, aralkyl, keto or ether radical.
4923947 Thermotropic liquid crystalline aromatic polyesters of disubstituted 4,4'-dihydroxydiphenylene May 8, 1990
Thermotropic liquid crystalline aromatic polyesters of 4,4'-dihydroxydiphenyl substituted in 3,3' positions by a halogen or by an alkyl, cycloalkyl or aralkyl radical.
4918217 Macrocyclic tetramers having columnar tridimensional mesophases April 17, 1990
Octa-substituted derivatives of the macrocyclic tetramers obtained by condensation of resorcinol with an alkyl aldehyde, wherein the sutstituents are alkanoyl, p-alkylbenzoyl, and p-alkoxybenzoyl chains. These substituted tetramers show stable, tridimensional, columnar type mesophase
4904757 Polyesters of 4,4'dihydroxybicyclohexyl February 27, 1990
Thermotropic semiflexible polyesters are taught which are obtained by polycondensation of 4,4'-dihydroxybicyclohexyl with at least one .alpha.,.omega.- alkandioic acid of general formula:wherein n is an integer comprised between 4 and 12.
4904628 Components and catalysts for the polymerization of olefins February 27, 1990
Catalysts for the polymerization of alpha-olefins, which comprise the product of the reaction between:(a) a metallorganic compound of Al;(b) an electron-donor compound reactive towards MgCl.sub.2 but which is not completely complexed with AlEt.sub.3, at the equivalent point of a potentio
4902748 Polymeric blends based on vinyl-aromatic polymers February 20, 1990
Polymeric blends containing 20-80% by weight of a modified vinyl-aromatic polymer containing from 5 to 15% by weight of a ethylenically unsaturated nitrile, and 80-20% by weight of at least one resin containing aromatic groups selected from aromatic polycarbonates and crystalline aromati
4902697 Derivatives of 2,2-dimethyl-cyclopropanecarboxylic acid February 20, 1990
Derivatives of 2,2-dimethylcyclopropanecarboxylic acid endowed with insecticidal and acaricidal activity, and having the formula ##STR1## wherein: R is an alkyl, cycloalkyl, alkenyl or alkynyl radical having from 1 to 8 carbon atoms, optionally substituted with halogen atoms, or R is
4902494 Process for preparing hydrated alumina consisting essentially of spherical particles by homogene February 20, 1990
A process for preparing hydrated alumina consisting essentially of spherical particles having a narrow granulometric distribution (polydispersion index dw/dn.ltoreq.2) starting from aqueous solution of aluminum sulphate, the molar ratio SO.sub.4.sup.= /Al.sup.3+ being greater than 1,
4894557 Asyncronous edge-triggered RS flip-flop circuit January 16, 1990
An edge triggered RS-type flip-flop circuit is disclosed which is capable of changing its state in response to a significant signal transition applied to a currently active input (SET or RESET) and independently of the current state of the other input (RESET or SET). The device can have
4894384 Alpha-(1-triazolyl)-keto-derivatives having fungicidal activity January 16, 1990
There are disclosed .alpha.-(1-triazolyl)-keto-derivatives of the general formula: ##STR1## in which R is alkyl, alkenyl or phenyl optionally substituted; R" is alkoxycarbonyl, alkylcarbonyl, arylcarbonyl, aminocarbonyl or cyano; R' has the meanings of both R and R".These compoun
4893028 One or more input asynchronous register January 9, 1990
A register is disclosed in which an applied data signal D or its complement D is used to set or reset an output RS flip-flop under control of an applied load control signal L. The load control signal is applied to a switching circuit which controls application of the data signal D or D t
4889939 Fluoropolyethers containing end groups endowed with anchoring capacity December 26, 1989
Compounds suitable for being used as lubricants, having general formula:(I) RO--(C.sub.3 F.sub.6 O).sub.m --(CFXO).sub.n --CFX--L, or(II) R"CFXO--(C.sub.3 F.sub.6 O).sub.x (CFXO).sub.y --(C.sub.2 F.sub.4 O).sub.z --CFX--L, whereR=--CF.sub.3, --C.sub.2 F.sub.5, --C.sub.3 F.sub.7X=F, --CF.sub.3R"=
4886923 Process for the preparation of tricyclo 8.2.2.2 hexadeca 4,6,10,12,13,15 hexaene chlorinated in December 12, 1989
A process for the chlorination of the benzene rings of tricyclo 8.2.2.2 hexadeca 4,6,10,12,13,15 hexane (or (2,2)-paracyclophane) having the formula (I): ##STR1## by gaseous chlorine, by operating in the presence of at least one metal chloride as a catalyst, and at least one co-c
4885409 Process for the hydrogenation of bis-phenols December 5, 1989
Process for the hydrogenation of bis-phenols by reacting bis-phenols with hydrogen in the presence of a catalytic system consisting of palladium supported on activated carbon.
4874838 Liquid crystal copolyethers from 7-oxa-bicyclo-(2,2,1)-heptane October 17, 1989
The present invention relates to copolyethers comprising 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, a
4874786 Cyanoacetamido-derivatives having a fungicidal activity October 17, 1989
A method of fighting fungus infections by using compounds having the formula: ##STR1## wherein: R is H, a C.sub.1 -C.sub.4 alkyl, an alkenyl, or an alkynyl radical; n is 1 or 2;A represents a C.sub.1 -C.sub.6 alkylene bridge, an arylene or a heterocyclic bridge;X represents O, S,
4866178 Process for the preparation of 2-carboxypyrazine 4-oxides September 12, 1989
A process for the preparation of 2-carboxpyrazine 4-oxides having the formula (I) ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, represent a hydrogen atom or an alkyl group having from 1 to 6 carbon atoms, by oxidation of the corresponding 2-ca
4863986 Fluorinated polyisocyanates suitable as paint components September 5, 1989
Fluorinated polyisocyanates particularly suitable for the formulation of coating paints and compositions in the electronics industry, obtained by starting from a perfluoropolyether polyol having a functionality higher than 2 and from a diisocyanate, the resulting derivative having isocya
4855272 Process for preparing solid components for catalysts, or precursors of such components, in the f August 8, 1989
Solid components of catalysts for the (co)polymerization of ethylene, or precursors of such components are prepared by treating an (a) emulsion in a perfluoropolyether of a liquid compound of magnesium, of titanium or of another transition metal, or of solutions thereof, possibly using a
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