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| Number | Title | Issue Date |
| 7273951 | Polyhydroxy phenols and their use in binding p-selectin Polyhydroxy phenols, which are non-peptidic mimetics of galloyl peptides, and a process for the preparation of gallic acid derivatives using a gallic-acid providing moiety are provided as well as polyhydroxy phenol-containing pharmaceutical and nutraceutical composi... | 09/25/2007 |
| 7264749 | Alkyne compounds The present invention relates to alkyne compounds of the formula I P1—Y1-A1-Y3-(T1-B1-)m-T3-C≡C-T4-(B2-T2-)n-Y4 | 09/04/2007 |
| 7262209 | Carbonyloxy-cyanomethyl compounds as antiparasitic agents The invention relates to compounds of the general formula wherein Ar1, Ar2, R4, R5, R6, R7, R8, W, X, a and b have the significances gi... | 08/28/2007 |
| 7125814 | Bis-o-nitrophenols derivatives and poly-o-hydroxyamides, polybenzoxazoles, materials, and microelectronic devices made therefrom Materials for dielectrics and/or buffer layers in microelectronics utilize polymers can be based on bis-o-nitrophenols. The bis-o-nitrophenols carry a tert-butoxycarbonyl group on at least one of the hydroxyl groups. The polybenzoxazoles prepared from these compound... | 10/24/2006 |
| 6794384 | Hydroxylation activated drug release The present invention concerns prodrugs whose aromatic oxidation, particularly their enzymatic aromatic hydroxylation, results in their activation by the release of a drug moiety. It particularly concerns anti-tumor prodrugs and those which are specifically activate... | 09/21/2004 |
| 6703473 | Process for producing polycarbonate An improvement to the melt transesterification reaction of diaryl carbonate with dihydroxy aryl compound is disclosed. The improvement entails the following steps (i) introducing the resulting vapor stream at the mid-height of a first distillation column,... | 03/09/2004 |
| 6548445 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base using a platinum metal catalyst and a cocatalyst, use is advantageously made of supported catalysts ... | 04/15/2003 |
| 6462217 | Oxidative carbonylation of hydroxyaromatic compounds Organolead compounds such as tetraethyllead are useful in catalyst compositions for the oxidative carbonylation of hydroxyaromatic compounds to diaryl carbonates. They are employed in combination with a Group 8, 9, or 10 metal such as palladium, or a comp... | 10/08/2002 |
| 6420587 | Catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 07/16/2002 |
| 6380418 | Catalyst compositions for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 04/30/2002 |
| 6372683 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 04/16/2002 |
| 6355824 | Catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 03/12/2002 |
| 6310229 | Lead halophenoxides and carbonylation catalyst and method for preparing and employing them Lead halophenoxides, especially bromophenoxides, are prepared by the reaction of lead(II) oxides with a hydroxyaromatic compound such as phenol and a chloride or bromide salt such as an alkali metal bromide, a tetraalkylammonium bromide or a bexaalkylguan... | 10/30/2001 |
| 6245398 | Optically anisotropic sheet containing discotic liquid crystal molecules twisted with optically active triphenylene compound An optically active triphenylene compound is represented by the formula (I). ##STR1## In the formula (I), R1, R2, R3, R4, R5 and R6 is independently an optically active monovalent group. Th... | 06/12/2001 |
| 6215015 | Catalyst composition and method for producing diaryl carbonates, using bisphosphines Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an iodide salt, preferably sodium iodide; and at least one organic bisphos... | 04/10/2001 |
| 6215014 | Catalyst composition and method for producing diaryl carbonates Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIIIB metal, preferably palladium; an alkali metal or alkaline earth metal halide, preferably sodium bromide;... | 04/10/2001 |
| 6207849 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 03/27/2001 |
| 6207848 | Process for the production of diaryl carbonates The method of the present invention comprises reaction of a gaseous mixture of oxygen and carbon monoxide with an aromatic hydroxy compound in the presence of a catalyst under controlled pressure, wherein the partial pressure of oxygen is optimized to eff... | 03/27/2001 |
| 6201146 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 03/13/2001 |
| 6197991 | Method and catalyst system for producing A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 03/06/2001 |
| 6191299 | Method for making aromatic carbonates An improved method for producing an aromatic carbonate by reacting an aromatic hydroxy compound, carbon monoxide and oxygen in the presence of a catalyst system comprising at least one of palladium or a palladium compound; at least one lead compound; at l... | 02/20/2001 |
| 6187942 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presen... | 02/13/2001 |
| 6184409 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds is disclosed. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presen... | 02/06/2001 |
| 6180812 | Catalyst composition and method for producing diaryl carbonates using amide as promoter Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal having an atomic number of at least 44, preferably palladium; an alkali metal or alkaline earth me... | 01/30/2001 |
| 6175033 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 01/16/2001 |
| 6175032 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the method includes the step of contacting at least one aromatic hydroxy compound with oxygen and carbon monoxide in the presence of a carbo... | 01/16/2001 |
| 6169197 | Process for separation between dialkyl carbonate and alkyl carbamate A process for separation between dialkyl carbonate and alkyl carbamate which comprises adding an aromatic hydroxy compound to a liquid comprising alkyl carbamate having an alkyl group having 3 to 6 carbon atoms and dialkyl carbonate having alkyl group hav... | 01/02/2001 |
| 6160155 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 12/12/2000 |
| 6160154 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 12/12/2000 |
| 6160156 | Process for the preparation of oligocarbonates The invention relates to a process for the preparation of aromatic oligocarbonates from dihydroxy compounds, CO and O2 in the presence of a platinum metal catalyst, a cocatalyst, a quaternary salt and a base, which is carried out in an inert or... | 12/12/2000 |
| 6153696 | Process for forming carbonates of hydroxyaromatic compounds A process for the stoichiometric carbonation of a hydroxyaromatic material is provided which comprises the steps of (a) mixing together in a reaction vessel (1) a hydroxyaromatic material, (2) a sufficient amount of a dialkyl dicarbonate to give the desir... | 11/28/2000 |
| 6147240 | Isocyanoalkyl carbonic acid derivatives, their conversion into secondary amidoalkyl carbonic acid derivatives by isocyanide-multicomponent reactions, as well as these secondary amidoalkyl carbonic acid derivatives The present invention relates to compounds of the general formula I ##STR1## wherein A is a group of the formula ##STR2## and Z is an O or S atom, to the further processing thereof to form novel sec-amidoalkylcarbonic acid derivatives and to tho... | 11/14/2000 |
| 6143913 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 11/07/2000 |
| 6143914 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 11/07/2000 |
| 6114564 | Catalyst composition and method for producing diaryl carbonates Hydroxyaromatic compounds such as phenol are carbonylated with oxygen and carbon monoxide in the presence of a catalyst system comprising a Group VIII metal having an atomic number of at least 44, preferably palladium; an alkali metal or alkaline earth me... | 09/05/2000 |
| 6114563 | Method and catalyst system for producing aromatic carbonates A method and catalyst system for economically producing aromatic carbonates from aromatic hydroxy compounds. In one embodiment, the present invention provides a method of carbonylating aromatic hydroxy compounds by contacting at least one aromatic hydroxy... | 09/05/2000 |
| 6093842 | Process for continuous production of carbonate esters Production of diaryl carbonate esters by reaction of a dialkyl carbonate and an aromatic alcohol to form a diaryl carbonate and an alkyl alcohol is accomplished by introducing three reactant streams into an extractive/reactive distillation column in the p... | 07/25/2000 |
| 6034262 | Method for the preparation of carbonates by a continuous process A continuous flow process for converting hydroxyaromatic compounds to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst system typically comprising a group VIIIB metal or compound thereof, an inorganic co-catalyst... | 03/07/2000 |
| 6001768 | Supported catalysts containing a platinum metal and process for preparing diaryl carbonates In the process for preparing an aromatic carbonate from an aromatic hydroxy compound, CO and O2 in the presence of a quaternary salt and a base, use is advantageously made of supported catalysts which, in the reaction-ready state, contain a pla... | 12/14/1999 |
| 5981788 | Method for recovering and recycling catalyst constituents Catalytic materials including divalent palladium compounds, divalent cobalt compounds and bromide sources such as tetraalkylammonium and hexaalkylguanidinium bromides are removed from organic carbonylation reaction mixtures comprising said materials in co... | 11/09/1999 |
