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| 20150098058 | OPHTHALMIC LENS - An ophthalmic lens having a main front face and a main rear face includes: an element for cutting off ultraviolet (UV) light incident on the main front face of the ophthalmic lens; an anti-reflection coating on the main rear face of the ophthalmic lens, having a weighted average reflection factor in the UV region of less than or equal to 7%; and at least one element for at least partially blocking the blue light in the wavelength region from 400 to 460 nanometers, preferably from 420 to 450 nanometers. | 04-09-2015 |
| 20150103310 | OPHTHALMIC LENS - An ophthalmic lens having a front and back face, at least one including a filter, which provides the main face/filter with the following properties:
| 04-16-2015 |
| 20150234208 | OPHTHALMIC LENS - An ophthalmic lens having a main front face and a main rear face includes: an element for cutting off ultraviolet (UV) light incident on the main front face of the ophthalmic lens; an anti-reflection coating on the main rear face of the ophthalmic lens, having a weighted average reflection factor in the UV region of less than or equal to 7%; and at least one element for at least partially blocking the blue light in the wavelength region from 400 to 460 nanometers, preferably from 420 to 450 nanometers. | 08-20-2015 |
| 20150261010 | PHOTOCHROMIC OPHTHALMIC LENS - A photochromic ophthalmic lens includes a photochromic substrate and a filter having at least one layer formed on the main front face of the lens. The filter has a total thickness ≦700 nm and the front face has: an average UVA reflection factor over a range of wavelengths from 330 to 380 nanometres that is ≦40%, for an incident angle between 0° and 15°, an average blue reflection factor over a range of wavelengths from 420 to 450 nanometres that is ≧5%, for an incident angle between 0° and 15°, a spectral reflectivity curve for an incident angle between 0° and 15°, the reflectivity curve having a reflectivity maximum at a wavelength <435 nanometres, and a width at mid-height ≧70 nanometres, and for an incident angle between 0° and 15°, Δ | 09-17-2015 |
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| 20130207365 | SUSPENSION THRUST BEARING DEVICE AND MCPHERSON STRUT EQUIPPED WITH SUCH A DEVICE - The present invention concerns a suspension thrust bearing device adapted to receive a shock absorber piston rod along a main axis (X | 08-15-2013 |
| 20140027235 | MECHANICAL SYSTEM WITH ONE-WAY CLUTCH AND ALTERNATOR COMPRISING SUCH A SYSTEM - The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing comprises at least one pressed ring distinct from the constituent elements of the one-way clutch device. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch. | 01-30-2014 |
| 20140034438 | MECHANICAL SYSTEM COMPRISING A ONE-WAY CLUTCH AND ALTERNATOR COMPRISING SUCH A SYSTEM - The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing is an angular-contact bearing and comprises at least one pressed ring comprising means of attachment of the rolling bearing to the first element or the second element. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch. | 02-06-2014 |
| 20140034439 | MECHANICAL SYSTEM COMPRISING A ONE-WAY CLUTCH AND ALTERNATOR COMPRISING SUCH A SYSTEM - The present invention relates to a mechanical system with a one-way clutch, for example a pulley for a motor vehicle alternator, comprising a first element and a second element which are able to move one with respect to the other in rotation about a central axis and delimit an annular housing radially to the central axis, a one-way clutch device arranged in the annular housing, and at least one rolling bearing arranged in the annular housing. The mechanical system is characterized in that the rolling bearing is an angular-contact bearing and comprises at least one pressed ring comprising means of attachment of the rolling bearing to the first element or the second element. The invention also relates to an alternator comprising such a mechanical system configured as a pulley with a one-way clutch. | 02-06-2014 |
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| 20080241120 | Use of Pilocarpine For Hypoptyalism Treatment - The object of the invention is a composition for the treatment of hypoptyalism, characterized in that it comprises pilocarpine combined with at least one bioadhesive polymer so as to allow dissolution and local attachment to the tissues of the buccopharyngeal cavity. | 10-02-2008 |
| 20100022496 | GALENICAL FORM FOR THE ADMINISTRATION OF ACTIVE INGREDIENTS BY TRANSMUCOUS MEANS - A galenical form for the administration transmucously of at least one active ingredient, characterized in that the active ingredient is in a stable and complete dissolved state in a hydroalcoholic solution that includes at least 20% by mass of alcohol so as to allow rapid absorption of the active ingredient through the mucous membranes of the buccal cavity and/or the oropharynx. Uses of the galenical form are also disclosed. | 01-28-2010 |
| 20100093710 | GALENICAL FORM FOR THE ADMINISTRATION OF PARACETAMOL BY TRANSMUCOUS MEANS - A galenical form for the transmucous administration of at least one active ingredient, characterized in that the active ingredient is paracetamol in a stable and complete dissolved state in a hydroalcoholic solution that includes at least 10% by mass of alcohol so as to allow fast absorption of the active ingredient through the mucous membranes of the buccal cavity and/or the oropharynx. A process for production and the uses of the galenical form are also disclosed. | 04-15-2010 |
| 20100168663 | DEVICE FOR THE ORAL ADMINISTRATION OF ACTIVE INGREDIENTS | 07-01-2010 |
| 20100298401 | GALENICAL FORM FOR THE ADMINISTRATION OF TRIPTANS BY BUCCAL TRANSMUCOUS MEANS - The object of the invention is a galenical form for the administration by buccal transmucous means of at least one active ingredient of the triptan family, comprising at least:
| 11-25-2010 |
| 20110104048 | HYDROGEN-GENERATING COLLOIDAL SUSPENSION - Described is the use of a colloidal suspension that includes between 2 and 60% of alkaline metal particles that are suspended in a neutral hydrophobic diluent for producing gaseous hydrogen, as well as a process for producing hydrogen. Also described is a hydrogen-generating device and its use. | 05-05-2011 |
| 20110238008 | DEVICE FOR PACKAGING AND DELIVERING ACTIVE PRINCIPLES IN A HYDROALCOHOLIC SOLUTION - The invention provides a packaging and administering device for administering a hydro-alcoholic solution by passing through a mucous membrane, the device comprising a deformable container for receiving at least one first fraction of the solution, a base that is secured to the container, and an administering tube that is secured to the base and that is suitable for receiving at least one second fraction of the solution, and that includes a cap. The tube includes a chamber for containing the at least one second solution and that is defined by two membranes, and the cap is movable in translation between two extreme positions and includes a needle for coming to pierce the two membranes in one of the extreme positions. | 09-29-2011 |
| 20110251233 | FORMULATION FOR THE BUCCAL TRANSMUCOSAL ADMINISTRATION OF SETRONS - The invention provides a formulation for transmucosal administration of at least one active ingredient from the setron family, the formulation comprising said active ingredient in base form and/or in salt form, a hydroalcoholic solution titrating at least 30° alcohol, and optionally a pH correcting agent, said active principle being present in the state of stable and complete dissolution in the hydroalcoholic solution. The invention also provides a method of preparing this formulation and its use for the treatment and prevention of major nausea and/or vomiting syndromes, and also for the treatment and prevention of digestive spasms. | 10-13-2011 |
| 20110257149 | FORMULATION FOR ORAL TRANSMUCOSAL ADMINISTRATION OF LIPID-LOWERING DRUGS - The invention relates to a formulation for delivering by oral transmucosal administration at least one lipid-lowering active principle, preferably from the statin family, said formulation including said active principle in the base or salt form, an aqueous alcohol solution titrating at least 30° alcohol, and optionally a pH correcting agent and/or an antioxidant, said active principle being in a stable and completely dissolved state in the aqueous alcohol solution. The invention also relates to a method of preparing said formulation and to the use thereof, preferably in single-dose packaging, for treating and preventing hyperlipemia and/or cardiovascular conditions. | 10-20-2011 |
| 20110275626 | FORMULATION FOR ORAL TRANSMUCOSAL ADMINISTRATION OF ANALGESIC AND/OR ANTISPASMODIC MOLECULES - A formulation for oral transmucosal administration of at least one active principle with antispasmodic and/or analgesic effect, including the active principle in base form and/or in salt form, an aqueous alcohol solution titrating at least 35° alcohol by weight, the active principle being present in a state of stable and complete dissolution in the aqueous alcohol solution. Also, a method of preparing this formulation and its use for treating spastic crises. | 11-10-2011 |
| 20110301213 | USE OF PILOCARPINE FOR HYPOPTYALISM TREATMENT - A method of treating hypoptyalism in a subject is provided. The method includes administering to the subject a pharmaceutical composition that includes pilocarpine and a bioadhesive polymer. The composition dissolves sublingually in the mouth of the subject and adheres to mucous tissues in the buccopharyngeal cavity. The pilocarpine then dissolves and binds to muscarine receptors present in cells of the subject's salivary glands, endobuccal submucous glands and submaxillary glands, is then absorbed by the cells thereby stimulating the glands to produce saliva. | 12-08-2011 |
| 20120190618 | METHOD AND PHARMACEUTICAL COMPOSITIONS FOR TRANS-BUCCAL MUCOSA TREATMENT OF POSTPRANDIAL HYPERGLYCAEMIA IN TYPE II DIABETES - The invention provides a method and a pharmaceutical composition in the form of a hydroalcoholic solution in which at least one hypoglycemia-inducing/insulinotropic active principle is dissolved in a stable and complete manner at a dosage that is reduced by 30% to 50% compared with the usual oral unit dosage, for its trans-buccal mucosal application in the spot treatment of postprandial hyperglycemia in type II diabetes in man or animals. The invention also pertains to a method of preparing said formulation and to its specific use in the spot treatment of postprandial hyperglycemia (PPHG) in the context of type II diabetes. | 07-26-2012 |
| 20130236393 | HYDROGEN-GENERATING COLLOIDAL SUSPENSION - The use of a colloidal suspension that comprises between 35% and 60% of alkaline metal particles that are suspended in a neutral hydrophobic diluent for producing gaseous hydrogen, as well as a process for producing hydrogen. Also, a hydrogen-generating device and its use. | 09-12-2013 |
| 20130331423 | Form of Administration of Enkephalinase Inhibitor - The present invention relates to a new formulation of an enkephalinase inhibitor, such as racecadotril or dexecadotril, the process for the preparation thereof, and the use thereof in the treatment of diarrhoea. | 12-12-2013 |
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| 20100213356 | Passive Optical Limiter Having Nonlinear Material - The invention relates to a passive optical limiter having a nonlinear material capable of switching in a predetermined optical band from a transparent state to an opaque state as a function of the power of an incident laser beam. The nonlinear material is an organic dye which comprises molecules derived from 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene into which a nitrogen atom is inserted at the meso position, referred to as aza-bodipy molecules, and which have conjugated π chains functionalized so as to exhibit absorption for two photons around an incident beam wavelength lying between 1.45 μm and 1.6 μm. | 08-26-2010 |
| 20140336373 | NOVEL COMPLEXING AGENTS AND CORRESPONDING LANTHANIDE COMPLEXES - The present invention concerns complexing agents of formula (I) in which a, b, c, chrom | 11-13-2014 |
| 20160031910 | LANTHANIDE COMPLEXES COMPRISING AT LEAST TWO BETAINE GROUPS, WHICH CAN BE USED AS LUMINESCENT MARKERS - The present invention relates to luminescent lanthanide complexes including a chelating agent, formed with a macrocycle or a set of ligands, complexing a lanthanide ion Ln3+, wherein the chelating agent is substituted with at least two groups. The invention is most particularly applied to lanthanide complexes, the chelating agent of which is formed the with three ligands integrating a 2,6 pyridine-di(carboxylic acid) or is formed with a macrocycle having a 1,4,7 triazacyclononane structure. | 02-04-2016 |
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| 20080243948 | METHOD FOR SHARING GROUPS OF OBJECTS - A method of sharing a group of one or more objects between a plurality of users, in which one or more of said plurality of users is able to change parameter data of at least one said object. The method comprises storing at least one version of each said object; when an object is changed, creating a new version of the object, the new version of the object comprising additional data relating to the creation of the new version; storing the new version of the object together with any version of that object before the change; providing all versions of the object to each of said plurality of users; and using the additional data provided for each version of the object to determine how to display the object. The group may be a calendar and each object may be an event in the calendar. In that case, the object parameter data may comprise a start time of the event, an end time of the event, a description of the event, a status of the event, whether the event is to be repeated and the persons attending the event. The additional data may comprise an identification of the user who made the change, a time at which the change was made, a description of the change, a user comment relating to the change and an identification of the previous version of the event from which the present version was created. | 10-02-2008 |
| 20100063961 | Reverse Tagging of Images in System for Managing and Sharing Digital Images - An online application and service operates over existing photo hosting services to allow users to share digital photos hosted by multiple online photo hosting services, including ability to automatically discover relevant photos, to create a photo “album” that includes photos hosted by multiple different online services; to automatically discover relevant content and add it to an album; to chat and/or send instant messages in relation to shared photos; and automatic notifications of events of interest to users. The service includes a server based application and an associated client-side application with a graphical user interface. The technology further includes a method of “reverse tagging”, i.e., automatically adding semantic tags to an online album and any photos included in it, by automatically performing an online search of an information resource in response to a user creating a name for the album, and applying results of the search as tags to the album. | 03-11-2010 |
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| 20080243948 | METHOD FOR SHARING GROUPS OF OBJECTS - A method of sharing a group of one or more objects between a plurality of users, in which one or more of said plurality of users is able to change parameter data of at least one said object. The method comprises storing at least one version of each said object; when an object is changed, creating a new version of the object, the new version of the object comprising additional data relating to the creation of the new version; storing the new version of the object together with any version of that object before the change; providing all versions of the object to each of said plurality of users; and using the additional data provided for each version of the object to determine how to display the object. The group may be a calendar and each object may be an event in the calendar. In that case, the object parameter data may comprise a start time of the event, an end time of the event, a description of the event, a status of the event, whether the event is to be repeated and the persons attending the event. The additional data may comprise an identification of the user who made the change, a time at which the change was made, a description of the change, a user comment relating to the change and an identification of the previous version of the event from which the present version was created. | 10-02-2008 |
| 20110295641 | FREEFORM COMMUNICATION IN CALENDARING SYSTEM - A method of sharing a calendar between a plurality of users, the calendar being capable of holding one or more events. The method comprises providing the calendar to each of said plurality of users; allowing any of said plurality of users to add to the calendar any of a new event, a change to an event and a message relating to an event; and providing any new event, change to an event or message added by a user to the other users. A change to an event may comprise a change to at least one of a start time of the event, an end time of the event, a description of the event, a status of the event, whether the event is to be repeated and the persons attending the event. At least one of an identification of a user who made a change, a time at which a change was made, a description of a change, a user comment relating to a change and an identification of the event before the change may be displayed for a selected event. | 12-01-2011 |
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| 20130324623 | PROCESS FOR THE PREPARATION OF A CATALYST USING A RAPID DRYING STAGE AND USE THEREOF FOR FISCHER-TROPSCH SYNTHESIS - The present invention concerns a process for the preparation of a catalyst comprising an active phase comprising at least one metal from group VIII selected from cobalt, nickel, ruthenium and iron, alone or as a mixture, and an oxide support which can be used in a Fischer-Tropsch synthesis process comprises at least once the linked sequence of a stage for impregnation of said oxide support, a drying stage in which said impregnated oxide support is entrained by means of a gas, said impregnated oxide support being subjected in said stage to a temperature rise ramp of between 250 and 600° C./min, the residence time of said impregnated oxide support in said drying stage being between 1 second and 1 minute, and a stage for calcination of said dried impregnated oxide support. The invention also concerns a Fischer-Tropsch synthesis process using the catalyst prepared according to the preparation process. | 12-05-2013 |
| 20130324624 | PROCESS FOR THE PREPARATION OF A CATALYST USING AT LEAST ONE RAPID DRYING STAGE AND AT LEAST ONE FLUIDISED BED DRYING STAGE AND USE THEREOF FOR FISCHER-TROPSCH SYNTHESIS - Preparation of a catalyst comprising at least one metal from group VIII said process comprising stabilization of an oxide support, by impregnation of said oxide support, rapid drying, calcination of impregnated and dried oxide support, stabilization stage being followed at least once by impregnation of stabilized oxide support, drying of stabilized and impregnated oxide support operating in a fluidized bed in the presence of a gas, said support being subjected to a temperature rise ramp of between 0.5 and 5° C./min to attain a temperature of between 50 and 170° C., the residence time of said support once the drying temperature is reached being between 20 and 180 min, and calcination of said dried impregnated stabilized oxide support. | 12-05-2013 |
| 20140296596 | PROCESS FOR DEHYDRATION AND ISOMERIZATION OF ALCOHOLS USING A CATALYST BASED ON A MESOSTRUCTURED MATERIAL COMPRISING SILICON - This invention has as its object a process for simultaneous dehydration and skeletal isomerization of a feedstock that comprises at least one C | 10-02-2014 |
| 20150057481 | METHOD FOR DEHYDRATING AND ISOMERISING ALCOHOLS USING A NON-ZEOLITE ALUMINOSILICATE SOLID - Process for simultaneous dehydration and skeletal isomerization of a feedstock that comprises at least one C | 02-26-2015 |
| 20150175932 | PROCESS FOR PRETREATMENT OF VEGETABLE OILS BY HETEROGENEOUS CATALYSIS OF THE ESTERIFICATION OF FATTY ACIDS - The invention relates to a continuous process for pretreatment of an oil feedstock comprising at most 20% by weight of free fatty acids by esterification of free fatty acids in which a vertical liquid/liquid contactor containing an esterification catalyst in solid form is supplied in counter-current by an alcohol feedstock comprising at least 20% by weight of an alcohol and said oil feedstock, with said contactor being operated at a temperature of between 25 and 120° C., with said contactor performing the contact in liquid-liquid counter-current between a heavy phase and a light phase, with said heavy phase being able to be either an oil-rich phase or an alcohol-rich phase. | 06-25-2015 |
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| 20080257781 | METHOD OF MANUFACTURING ALCOHOL ESTERS FROM TRIGLYCERIDES AND ALCOHOLS USING HETEROGENEOUS CATALYSTS BASED ON PHOSPHATE OR AN ORGANOPHOSPHOROUS COMPOUND OF A GROUP 4 METAL - A method of manufacturing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a phosphate type catalyst or of an organophosphorous compound of a metal selected from the group made up of zirconium, hafnium and titanium, allows to directly produce, in one or more stages, an ester that can be used as fuel and a pure glycerin. | 10-23-2008 |
| 20090088595 | Process for producing propylene in the presence of a macroporous catalyst in the form of spherical beads - A process for once-through conversion of a hydrocarbon feed comprising at least olefins containing 4 carbon atoms and at least olefins containing 5 carbon atoms is described for the production of propylene, said process comprising passing said feed into at least one reaction unit provided with at least one catalyst in the form of spherical beads with a diameter in the range 1 to 3 mm, each of said spherical beads comprising at least one zeolite and at least one alumina-based support and having a pore distribution such that the macroporous volume, measured by mercury porosimetry, is in the range 0.10 to 0.20 ml/g and the mesoporous volume, measured by mercury porosimetry, is in the range 0.25 to 0.35 ml/g. | 04-02-2009 |
| 20100154295 | METHOD OF PREPARING ALCOHOL ESTERS FROM TRIGLYCERIDES AND ALCOHOLS USING HETEROGENEOUS CATALYSTS COMBINING AT LEAST A ZnxAl2O3+x TYPE SOLID SOLUTION AND ZnO - A method of preparing a composition of alcohol esters of linear monocarboxylic acids with 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols having 1 to 18 carbon atoms, in the presence of a catalyst combining at least a solid solution of Zn | 06-24-2010 |
| 20110034750 | PROCESS FOR THE PRODUCTION OF LIGHT OLEFINS FROM ETHANOL IN THE PRESENCE OF A MACROPOROUS CATALYST THAT COMES IN THE FORM OF BALLS - A process for the production of C3-C6 light olefins from ethanol is described, and said process comprises at least the passage of a feedstock that contains ethanol into at least one reaction unit that is provided with at least one catalyst that comes in the form of spherical balls with a diameter of between 1 and 3 mm, each of said spherical balls comprising at least one zeolite and at least one alumina-based substrate and having a pore distribution such that the macropore volume that is measured by mercury porosimetry is between 0.10 and 0.20 ml/g and the mesopore volume that is measured by mercury porosimetry is between 0.25 and 0.35 ml/g. | 02-10-2011 |
| 20110065942 | PROCESS FOR PREPARING ESTERS OF ALCOHOLS AND GLYCERIN FROM TRIGLYCERIDES AND ALCOHOLS USING A HETEROGENEOUS CATALYST IN THE PRESENCE OF A CONTROLLED QUANTITY OF WATER - A process for preparing a composition of alcoholic esters of straight chain monocarboxylic acids containing 6 to 26 carbon atoms and glycerin, starting from a vegetable or animal oil, neutral or acidic, virgin or recycled with mono-alcohols containing 1 to 18 atoms, in the presence of a zinc aluminate catalyst and in the presence of a controlled quantity of water, can directly produce, in one or more steps, an ester which can be used as a propellant or fuel along with glycerin having improved purity containing a reduced quantity of ethers by using a partially dried catalyst. | 03-17-2011 |
| 20110092730 | HETEROGENEOUS CATALYST OF THE ZINC ALUMINATE SPINEL TYPE SURSTOICHIOMETRIC IN ZINC AND USE THEREOF IN A PROCESS FOR PREPARATION OF ALCOHOL ESTERS FROM TRIGLYCERIDES AND ALCOHOLS - A catalyst with a mixed zinc and aluminium oxide base having a spinel structure surstoichiometric in zinc, in which part of the Zn atoms are in the octahedral position, a process for preparation of the same and use of the same in a process for preparation of a compound of linear monocarboxylic acid alcohol esters with 6-26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols of 1-18 carbon atoms allowing an ester that can be used as a motor fuel or a heating fuel and a pure glycerine to be obtained directly in one or more steps, | 04-21-2011 |
| 20110190562 | CATALYST COMPRISING AN IZM-2 ZEOLITE AND AT LEAST ONE METAL, AND ITS USE IN THE TRANSFORMATION OF HYDROCARBONS - A catalyst is described which comprises at least one IZM-2 zeolite, at least one matrix and at least one metal selected from metals from groups VIII, VIB and VIIB, said zeolite having a chemical composition expressed as the anhydrous base in terms of moles of oxides by the following general formula: XO | 08-04-2011 |
| 20110295046 | Method Of Converting Ethanol To Base Stock For Diesel Fuel - A method of converting ethanol to a diesel fuel base stock comprises:
| 12-01-2011 |
| 20120016042 | COBALT-BASED CATALYST ON A SILICA-ALUMINA SUPPORT FOR FISCHER-TROPSCH SYNTHESIS - The present invention concerns a catalyst for carrying out hydrocarbon synthesis starting from a mixture comprising carbon monoxide and hydrogen, the active phase of which comprises at least one metal from group VIII deposited on a support formed by at least one oxide, in which said metal from group VIII is selected from the group constituted by cobalt, nickel, ruthenium or iron, and in which said catalyst has an atomic ratio (Co/Al) | 01-19-2012 |
| 20120022279 | CATALYST COMPRISING AT LEAST ONE IZM-2 ZEOLITE, AND ITS USE IN THE TRANSFORMATION OF HYDROCARBON FEEDS - A catalyst is described which comprises at least one IZM-2 zeolite and at least one matrix, said zeolite having a chemical composition expressed as the anhydrous base in terms of moles of oxides by the following general formula: XO | 01-26-2012 |
| 20130137908 | PROCESS FOR DEHYDRATION AND ISOMERIZATION OF C4 ALCOHOLS USING AN AMORPHOUS SOLID WITH SUITABLE POROSITY - The present invention relates to a method of producing C4 olefins, from a feed of C4 monohydric alcohol, in which a reaction of dehydration of the monohydric alcohol to at least one olefin, and a reaction of skeletal isomerization of at least one of the olefins produced in one and the same reaction vessel, are carried out in the presence of an alumina-based catalyst with adapted porosity. | 05-30-2013 |
