| Patent Number |
Title Of Patent |
Date Issued |
| 6642172 |
Extruded catalyst based on silica/alumina gel |
November 4, 2003 |
| A catalyst in the form of extruded bodies is disclosed, which consists of an inert binding agent and a catalytically active phase of a silica/alumina gel. The catalyst is particularly active in acid-catalysed reactions. |
| 6180011 |
Method for removing hydrocarbon products from water surfaces |
January 30, 2001 |
| A method for removing hydrocarbon products from water surfaces, which entails contacting the hydrocarbon products with a crystalline polypropylene, which when observed under a microscope of 2500 magnetization, exhibits a spongy surface having relatively homogeneous intercommunicating |
| 6084143 |
Catalytic composition and process for the alkylation or transalkylation of aromatic compounds |
July 4, 2000 |
| A catalytic composition is described for the alkylation or transalkylation of aromatic compounds consisting of zeolite Beta, as such or modified by the isomorphic substitution of aluminium with boron, iron or gallium or by the introduction of alkaline/earth-alkaline metals following ion |
| 5888471 |
Synthetic crystalline porous material containing oxides of silicon, titanium and gallium |
March 30, 1999 |
| A synthetic, crystalline, porous material is disclosed, together with the related preparation process. Such material of zeolitic nature containing oxides of silicon, titanium and gallium corresponds, in the calcined and anhydrous state, to the following empyrical formula:wherein p has a |
| 5888466 |
Process for preparing amorphous, catalytically active silicoaluminas |
March 30, 1999 |
| An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m.sup.2 /g and with a molar ratio of SiO.sub.2 :Al.sub.2 O.sub.3 of at least 30:1, is prepared by hydrolysing and causing a tetra-alkyl ammonium hydroxide, an aluminum t |
| 5811612 |
Catalytic composition and process for the alkylation or transalkylation of aromatic compounds |
September 22, 1998 |
| A catalytic composition is described for the alkylation or transalkylation of aromatic compounds consisting of zeolite Beta, as such or modified by the isomorphic substitution of aluminium with boron, iron or gallium or by the introduction of alkaline/earth-alkaline metals following ion |
| 5730908 |
Photochromatic and thermochromatic compounds and their application in polymeric materials |
March 24, 1998 |
| A description follows of photochromatic and thermochromatic compounds, belonging to the group of spiro-indoline-oxazines, and their application in polymeric materials. |
| 5686644 |
Procedure for the production of alkyl carbonates |
November 11, 1997 |
| Dialkyl carbonate is prepared by reacting an alcohol with a gaseous mixture of carbon monoxide and oxygen in the presence of cuprous chloride as catalyst and hydrochloric acid as in situ regenerator of the catalyst. |
| 5685957 |
Method for removing acidic and salt impurities from an aqueous condensed phase containing dimeth |
November 11, 1997 |
| Acidic and salt impurities are removed from a condensed phase obtained from dimethyl carbonate synthesis by obtaining the condensed phase from the effluent of a reactor in which carbon monoxide, oxygen and methanol are reacted to form dimethyl carbonate, the condensed phase containing ac |
| 5672799 |
Process for the preparation of cumene |
September 30, 1997 |
| Process for the preparation of cumene by the alkylation of benzene with propylene, catalyzed by zeolite Beta into which certain quantities of suitable alkaline, alkaline-earth or metallic cations have been introduced by ion exchange. |
| 5631395 |
Method for removing the acidic impurities contained in a vapourized stream composed by organic v |
May 20, 1997 |
| Method for removing the acidic impurities contained in a vaporized stream consisting of an alkanol, an alkyl carbonate, water and still other organic species in minor amounts, which method consists in sending said stream to a solid adsorption reactor comprising alumina or activated c |
| 5625108 |
Process for preparing amorphous, catalytically active silicoaluminas |
April 29, 1997 |
| An amorphous, micro/mesoporous silica-alumina gel with controlled pore size, having a surface area of at least 500 m.sup.2 /g and with a molar ratio of SiO.sub.2 :Al.sub.2 O.sub.3 of at least 30:1, is prepared by hydrolysing and causing a tetra-alkyl ammonium hydroxide, an aluminum t |
| 5602212 |
Linear copolyester containing phosphorous, procedure for its preparation and its use as a flame- |
February 11, 1997 |
| A linear copolyester is prepared by polycondensation of an aromatic bicarboxylic acid with an alkylene glycol and with a carboxyphosphinic acid or anhydride which produces monomeric units having the formula: ##STR1## wherein R.sub.1 is an alkylene or phenyl radical and R.sub.2 is an |
| 5599876 |
Composition and procedure for the preparation of organic glasses |
February 4, 1997 |
| A polymerizable liquid composition includesa polymerizable poly(allyl carbonate) of an aliphatic or cyclo-aliphatic polyol;an organic peroxide generator of free radicals selected from the group of perketals, and possiblyan organic dye and/or an organic photochromic compound.The compositions |
| 5580916 |
Vulcanizable compositions of nitrile rubbers |
December 3, 1996 |
| A description follows of vulcanizable compositions of nitrile rubbers containing a plasticizer, a vulcanizing agent and normal additives, wherein the plasticizer is an organic carbonate selected from those which can be defined with the formula (I): ##STR1## or with the formula (I |
| 5550207 |
Linear copolyester containing phosphorous, procedure for its preparation and its use as a flame- |
August 27, 1996 |
| A linear copolyester is prepared by polycondensation of an aromatic bicarboxylic acid with an alkylene glycol and with a carboxyphosphinic acid or anhydride which produces monomeric units having the formula: ##STR1## wherein R.sub.1 is an alkylene or phenyl radical and R.sub.2 is an |
| 5536864 |
Process for producing dimethyl carbonate and apparatus suitable for such purpose |
July 16, 1996 |
| The reaction between methanol, carbon monoxide and oxygen for preparing dimethyl carbonate, in the presence of cuprous chloride as the catalyst, is carried out in a special reactor constituted by two parallel, vertical tubes, at the base of one of which the fresh gas and the recycle gas |
| 5527943 |
Method for removing acid and saline contaminants from a gaseous stream leaving a dimethylcarbona |
June 18, 1996 |
| A method is described enabling HCl and possible entrained CuCl particulate to be removed from a gas-vapor stream leaving a dimethylcarbonate synthesis reactor. The contaminant removal is effected by one of the process fluids used in a small quantity. |
| 5514254 |
Procedure for the photochlorination of alkyl-aromatic compounds |
May 7, 1996 |
| An alkyl-aromatic compound is selectively photochlorinated in the side chain in a cyclic reaction system wherein said compound is continuously circulated between a container and photochlorination reactor.The compound is partially chlorinated after each passage through the photochlorinati |
| 5505869 |
Low smoke lubricating composition for two-phase engines |
April 9, 1996 |
| A carbonate ester of an aliphatic triol or tetraol which can be defined with the following formula: ##STR1## wherein R.sub.1, R.sub.2, R' and p are as defined in the description, is used as a lubricating base with a low quantity of smoke for two-phase engines with internal combus |
| 5498811 |
Process for producing gasolines and jet fuel from n-butane |
March 12, 1996 |
| Polymeric fuels are produced from saturated C.sub.4 hydrocarbons by a process comprising:(A) dehydroisomerizing a gas mixture comprising predominantly of n-butane and hydrogen in a catalytic reactor containing a catalyst (a) of platinum supported on alumina, whose surface is coated with |
| 5489316 |
Process for making industrial organic solvents and hydrocarbons used as fuels |
February 6, 1996 |
| Process for marking industrial organic solvents miscible with water and petroleum products gaseous at atmospheric pressure and room temperature and liquid when compressed at low pressure, by the addition to the above solvents of a primary nitroderivative having the general formula |
| 5462984 |
Solid blends of stabilizers for polymers |
October 31, 1995 |
| Solid stabilizers for polymers comprises a blend of (a) organic polymer and (b) at least one silicon-containing compound having a sterically hindered amine group in the molecule in quantities of between 40% and 50% by weight of the final solid blend. |
| 5457213 |
Catalytic procedure for the preparation of organic carbonates |
October 10, 1995 |
| Catalytic procedure for the preparation of an organic carbonate having general formula (I): ##STR1## wherein R represents a C.sub.1 -C.sub.10 alkyl radical, linear or branched, or a C.sub.5 -C.sub.8 cycloalkyl radical; or of a cyclic organic carbonate having general formula (II): |
| 5457037 |
Cloning of the gene coding the isoamylase enzyme and its use in the production of said enzyme |
October 10, 1995 |
| The structural gene encoding isoamylase from Pseudomonas SMP 1 is obtained. Also described are vectors comprising the isoamylase gene and host microorganisms transformed by these vectors. The transformed host microorganisms are capable of expressing and/or secreting mature isoamylase |
| 5447991 |
Flame-resistant polyolefinic fibres and films |
September 5, 1995 |
| Polyolefinic fibres and films are made flame-resistant by the addition of a flame-resistant additive made up of a copolyester containing units deriving from: a) terephthalic acid; b) alkylenic glycol (C.sub.2 --C.sub.6) ; and c) phenyl hydroxymethylene phosphinic acid.These fibres and fi |
| 5423994 |
Ski lubricant comprising a hydrocarbon compound containing a perfluoro segment |
June 13, 1995 |
| Compounds which can be defined by the formula (I):wherein:n is a numeral comprised within the range of from 1 to 21;m is a numeral comprised within the range of from 3 to 25;n+m is a numeral equal to, or higher than, 18;with the chain of carbon atoms being either linear or branchedare used as agents |
| 5395949 |
Process and catalyst for preparing organic carbonates |
March 7, 1995 |
| Organic carbonates and cyclic organic carbonates are prepared by reacting an aliphatic or cycloaliphatic alcohol, or, respectively, an aliphatic diol, with carbon monoxide and oxygen, by operating in the presence of a complex catalyst of cobalt with organic ligands bearing one or more ox |
| 5366991 |
Pyrazolecarboxamides exhibiting insecticide and acaricide activity |
November 22, 1994 |
| 5-pyrazolecarboxylic acid amide-based insecticide and acaricide compounds of general formula (I): ##STR1## in which: R.sub.1 represents a hydrogen atom, a linear or branched C.sub.1 -C.sub.4 alkyl group or a benzyl group;R.sub.2 represents a hydrogen atom or a linear or branched C.su |
| 5357002 |
Polymer containing chelating groups, process for preparing it and its use in water purification |
October 18, 1994 |
| Water insoluble polymers containing hydrophilic pendant moieties ending with a chelating group are disclosed. The polymers are useful in the purification of water polluted by heavy metals such as mercury and lead. The polymers have the general formula P--(--(--O--R).sub.n --(NH--Q).sub.p |
| 5354454 |
Continuous process for deasphalting and demetallating a residue from crude oil distillation |
October 11, 1994 |
| A continuous process for deasphalting and demetallating a residue from crude oil distillation, by means of dimethyl carbonate as extraction solvent, comprises:mixing a residue from crude oil distillation with a recycled liquid stream containing oil and dimethyl carbonate, in order to pro |
| 5350786 |
Process of (co)polymerization of .alpha.-olefins in the presence of stabilizers |
September 27, 1994 |
| Stabilizers for organic polymers, consisting of one or more compounds of the classis of the sterically hindered amines (HALS) are directly added to the reaction mixture during the (co)polymerization of the .alpha.-olefins or of their mixtures with other unsaturated monomers.The so-obtain |
| 5338787 |
New pentaerythryl phosphonates containing self-extinguishing thermoplastic compositions |
August 16, 1994 |
| A new group of pentaerythryl diphosphonates and poly(pentaerythryl diphosphonates) are described. Flame-retardant compositions are also described, which include a thermoplastic polymer and a certain amount of self-extinguishing agent consisting of one of the above-mentioned pentaeryt |
| 5326818 |
Polysiloxanic stabilizers containing sterically hindered phenol groups and reactive groups |
July 5, 1994 |
| Polymeric stabilizers with a polysiloxanic structure contain sterically hindered phenol groups and reactive groups capable of binding themselves to the polymeric structure to be stabilized. These polymeric stabilizers are particularly suitable for applications which require the non-e |
| 5322958 |
Catalytic procedure for the preparation of organic carbonates |
June 21, 1994 |
| Catalytic procedure in gas phase for the preparation of a symmetrical or asymmetrical organic carbonate having the general formula (I): ##STR1## wherein R and R', the same or different, represent a C.sub.1 -C.sub.4 alkyl radical, linear or branched, which includes reacting at least o |
| 5315034 |
Procedure for the preparation of alkyl isocyanates |
May 24, 1994 |
| Multistep process for the preparation of alkyl mono and diisocyanates consisting in reacting the corresponding aliphatic amine or diamine with dimethylcarbonate and, substantially, in partially vaporizing and converting the urethane thus formed in an evaporator to subsequently termin |
| 5310841 |
Liquid composition polymerizable to yield organic glasses with low water absorption and high the |
May 10, 1994 |
| A liquid composition, polymerizable by free-radical polymerization to yield organic glasses which are endowed with characteristics of low water absorption and high thermal stability, is constituted by the product of transesterification of diallyl-carbonate with a cycloaliphatic diol or a |
| 5302735 |
Polysiloxanic stabilizers containing sterically hindered phenol groups and oxamidic groups |
April 12, 1994 |
| Polysiloxanic compounds, containing sterically hindered phenol groups and oxamidic groups in the molecule, obtained by the copolymerization of monomers having general formula (I):with monomers having general formula (II): ##STR1## |
| 5296521 |
Fast-crystallizing polyester compositions |
March 22, 1994 |
| The present invention relates to fast-crystallizing polyester compositions comprising: (a) a thermoplastic polyester resin; (b) a nucleating agent of the formula: ##STR1## wherein: R is an alkali or alkaline-earth metal; m is 1, 2 or 3; n takes an average value within the range o |
| 5290533 |
Method for production of a coated substrate with controlled surface characteristics |
March 1, 1994 |
| A crystalline, porous, synthetic material is disclosed, together with its related preparation process.Such a material of zeolitic character, containing silicon, titanium and iron oxides, corresponds, in its calcined and anhydrous state, to the following empi rical formulawherein p has a |
| 5288869 |
Pentaerythryl phosphonates and their use in self-extinguishing thermoplastic polymeric compositi |
February 22, 1994 |
| A new group of pentaerythryl diphosphonates and poly(pentaerythryl diphosphonates) are described. Flame-retardant compositions are also described, which include a thermoplastic polymer and a certain amount of self-extinguishing agent consisting of one of the above-mentioned pentaeryt |
| 5288839 |
Diol-terminated polycarbonates |
February 22, 1994 |
| Diol-polycarbonates having the general formulawhere R.sub.1, R.sub.2, R.sub.3, X and Y have the meaning specified in the text, are used in the synthesis of prepolymers which in turn can be used in reactive adhesive and/or sealing formulations of the hygro-, photo- or thermosetting type, |
| 5286816 |
Organic glass with improved impact strength and with a refractive index equal or similar to that |
February 15, 1994 |
| An organic glass with improved impact strength and with a refractive index equal or similar to that of mineral glass (crown glass), is composed of the product of the radicalic polymerization of the polymerizable liquid composition obtained by the transesterification of:(A) diallyl carbon |
| 5280051 |
Composition for the production of artificial marble or granite |
January 18, 1994 |
| Artificial marble or granite having excellent aesthetic properties, patterns and tonalities which cannot be found in natural materials are prepared from a composition containing a polymerizable poly(allyl carbonate) of a polyol and mineral filler, where the mineral filler is a carbon |
| 5264604 |
Oxamidic stabilizers |
November 23, 1993 |
| Oxamidic stabilizers containing organofunctional groups of silicon, capable of producing polymeric structures or of chemically binding themselves to a solid support. |
| 5242624 |
Stabilizing mixture for compounds having a photochromatic activity |
September 7, 1993 |
| Stabilizing mixture for photochromatic substances containing a cyclic amine chosen from 1,4-diazabicyclo-(2.2.2)octane and quinuclidine, or their derivatives, and at least one sterically hindered amine. |
| 5241119 |
Process for the preparation of 4,4'-diaminodiphenyl-methane and its derivatives |
August 31, 1993 |
| Process for the preparation of 4,4'-diaminodiphenylmethane and its derivatives.4,4'-diaminodiphenylmethane and its derivatives are prepared by the condensation of aniline, or its derivative, and aldehyde, or its precursor and/or isomerization of appropriate intermediate products. The rea |
| 5240642 |
Process for obtaining granular forms of additives for organic polymers |
August 31, 1993 |
| Process for obtaining granular forms of organic and inorganic antiacid additives and tetrakis-[3-(3,5-di-tert.-butyl-4-hydroxyphenyl)-propionyloxymethyl]-metha ne, carried out in the presence of an amount of the latter in the molten state, homogeneously distributed throughout the powd |
| 5235062 |
Procedure for the preparation of bisoxazolidines containing urethanic groups |
August 10, 1993 |
| New procedure for the preparation of polyoxazolidines which can be defined with the general formula: ##STR1## This procedure, which excludes the use of isocyanates, requires the simple transesterification of the dicarbamate of a diamine with an N-hydroxyalkyloxazolidine. |
| 5234995 |
Method of crosslinking moisture curable systems with oxazolidinic silane and siloxanes |
August 10, 1993 |
| New silanes containing at least two oxazolidinic moieties can be defined by means of the general formula: ##STR1## wherein X.sub.1, X.sub.2, X.sub.3 and X.sub.4 have the meaning as reported in the specification, and each one of A.sub.1, A.sub.2 and A.sub.3 represents from 0 to a |
