| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568591000 | Plural oxygens bonded directly to the same carbon (e.g., acetals, ketals, orthoesters, orthocarbonates, etc.) | 30 |
| 20110190544 | Modification of carbonaceous materials - A modified carbonaceous material having chemically bound on its surface at least one fluoropolyoxyalkylene chain (chain R | 08-04-2011 |
| 568592000 | Benzene ring containing | 6 |
| 20110207968 | PROCESS FOR PREPARING 4-ISOPROPYLCYCLOHEXYLMETHANOL - The present invention relates to a process for preparing 4-isopropylcyclohexylmethanol (IPCHM) from para-cymene. The process for preparing 4-isopropylcyclohexylmethanol (IPCHM) comprises an electrochemical process for preparing a mixture of 4-isopropylbenzaldehyde dimethyl acetal and 4-(1-alkoxy-1-methylethyl)benzaldehyde dimethyl acetal, and intermediates passed through in the process, a hydrolysis step to form the corresponding benzaldehydes and a hydrogenation of this mixture to form 4-isopropylcyclohexylmethanol (IPCHM). | 08-25-2011 |
| 20150025278 | AROMATIC POLYACETALS AND ARTICLES COMPRISING THEM - A polymer includes repeat units having the structure | 01-22-2015 |
| 20150080612 | METHOD OF ACETALIZING AN ALDEHYDE - A method of acetalizing an aldehyde comprising reacting said aldehyde with an alcohol in the presence of a polymeric catalyst to form an acetal wherein the polymeric catalyst is a mesoporous poly-melamine-formaldehyde polymer. | 03-19-2015 |
| 568593000 | Plural oxyalkylene groups bonded directly to each other | 3 |
| 20130197274 | 1,1-DI[(ALKYLPHENOXY)ETHOXY]CYCLOHEXANES - Disclosed is a ketal having the formula: | 08-01-2013 |
| 20140135535 | PERFLUOROPOLYVINYL MODIFIED ARYL MONOMERS - A compound of formula (I) | 05-15-2014 |
| 20140288332 | ALKYL ETHER COMPOSITIONS AND METHODS OF USE - A polymer includes a linker represented by Formula I ([OR | 09-25-2014 |
| 568594000 | Acyclic | 23 |
| 20090036715 | METHOD FOR PREPARING POLYMETHOXYMETHYLAL - This invention describes a method for preparing polymethoxymethylal. By this method, polymethoxymethylal is prepared by a catalytic reaction using methanol and trioxymethylene as reactants and using an ionic liquid as catalyst under a relatively moderate reaction condition. The catalyst of this invention has a high catalytic activity and a high conversion; the reaction process is simple, easy to be operated and has a strong controllability; the distribution of the products after reaction is superior and the utilization ratio of the raw materials is high. | 02-05-2009 |
| 20090105507 | Process for Preparing Partial Oxidation Products of Lower Alcohols by Direct Oxidation of a Lower Alcohol and Catalysts for Use in that Process - The use of a complex oxide having the following composition (I). M0 | 04-23-2009 |
| 20100076226 | Preparation of Dibutoxymethane - A process for the preparation of dibutoxymethane, in one embodiment from 50% formaldehyde, in a condensation reaction without the use of co-solvent. | 03-25-2010 |
| 20110071322 | METHOD FOR THE SYNTHESIS OF DIALKOXY ALKANES BY MEANS OF THE SELECTIVE OXIDATION OF ALCOHOLS - The invention relates to a method for the synthesis of dialkoxyalkanes by means of the partial selective oxidation of a light alcohol. According to said method, the light alcohol is oxidised in the presence of molecular oxygen or a gas containing molecular oxygen, and a solid oxidation catalyst based on at least one metal in a reactive medium comprising a gaseous phase containing an acid compound according to the Pearson classification, having a pKa of less than 6.3 in solution in water. The reaction is carried out in a vapour or in a liquid phase. | 03-24-2011 |
| 20110118507 | METHOD FOR PRODUCING DIALKOXY ALKANES BY PARTIAL OXIDATION OF LOWER ALCOHOLS IN THE PRESENCE OF A CATALYST BASED ON MOLYBDENUM AND IRON - The invention relates to a method for producing alkoxy alkanes by direct partial oxidation of a lower alcohol with a catalyst based upon mixed oxide containing molybdenum and at least one other metal selected from the metals that can assume a trivalent oxidation state such as Fe, Bi, Al, Cr, In, La, Sb, and/or a metal selected from Ni, Co, Cu, V, W, Ti, Ta, Nb, Mn, Sn, P. | 05-19-2011 |
| 20140066660 | Method for Producing Dialkoxy Alkanes by Partial Oxidation of Lower Alcohols in the Presence of a Catalyst Based on Molybdenum and Iron - Disclosed herein is a method for producing alkoxy alkanes by direct partial oxidation of a lower alcohol with a catalyst based upon mixed oxide containing molybdenum and at least one other metal selected from the metals that can assume a trivalent oxidation state such as Fe, Bi, Al, Cr, In, La, Sb, and/or a metal selected from Ni, Co, Cu, V, W, Ti, Ta, Nb, Mn, Sn, P. | 03-06-2014 |
| 20140187823 | PROCESS FOR THE PRODUCTION OF PURE METHYLAL - The invention relates to a continuous process to make and isolate methylal by reacting formaldehyde and methanol with an acid catalyst under at least partial formation of methylal and water, to form a mixture M2 comprising formaldehyde, methanol, methylal, and water, separating the said mixture M2 in a distillation column B into three distinct product streams, one being a distillate taken from the column head BH which is rich in methylal, one taken from the column bottom stream BB being almost pure water, and one taken from the side of the column B below the reaction zone which stream is rich in methanol, characterised in that the ratio of the amount of substance of methanol to the amount of substance of formaldehyde in the mixture M1 is at least 3 mol/mol, and to an apparatus to be used with this process. | 07-03-2014 |
| 20140288333 | PROCESS FOR PREPARING OR RECOVERING ACETALS OR KETALS BY MEANS OF PERVAPORATION - The process of the present invention comprises reacting an aldehyde or ketone with an alcohol in the presence of a solid acid, and removing removing water and methanol from the reaction product by pervaporation, characterized in that a membrane having a flux density for water of 0.04 to 2.8 kg/(hm | 09-25-2014 |
| 568595000 | At least three oxygens bonded directly to the same carbon ( e.g., orthoesters, etc.) | 1 |
| 20090143624 | COMPOSITIONS OF AND PROCESSES FOR PRODUCING POLY(TRIMETHYLENE GLYCOL CARBONATE TRIMETHYLENE GLYCOL ETHER) DIOL - This invention relates to compositions of and processes for producing an unsubstituted or R-substituted poly(trimethylene glycol carbonate trimethylene glycol ether)diol. The processes use acidic ion exchange resins and include solvents. | 06-04-2009 |
| 568596000 | Carbon to carbon unsaturation containing | 5 |
| 20120226077 | FLUOROELASTOMERS - VDF-based curable fluoroelastomers having glass transition temperature lower than −35° C. and an amount of —COF end groups in the polymer lower than the sensitivity limit of the method using the FT-IR spectroscopy described in the present application. | 09-06-2012 |
| 20120316366 | Method of Preparing 2,6,10-Trimethyl-1,1-Dialkoxy-3,5,9-Undecatriene Used as an Intermediate of Lycopene - The present invention describes a novel synthetic method for preparing the key intermediate 2,6,10-trimethyl-1,1-dialkoxy-3,5,9-undecatriene of lycopene. An existing synthetic method have some disadvantages that it is very difficult to gain the raw material dialkyl 4-methyl-5,5-diakoxy-1-pentene-1-phosphonate (10) because no effective synthetic method can be adopted, and furthermore the obtained target compound is composed of several cis/trans isomers. This invention relates to a process comprising a condensation step wherein a starting C10-phosphonate is changed to its carbanion completely at a temperature of −40˜30 under an atmosphere of a non-reactive gas in an organic solvent catalyzed by base, and then C4-dialkyl is added to undergo Wittig-Horner condensation. This invention affords all trans C14-acetal and this method is characterized with the advantages of simple procedure, easy access to raw material and low cost, which makes it has the value of industrial application. | 12-13-2012 |
| 568597000 | Acetylenic unsaturation | 1 |
| 20120197046 | PROCESS FOR THE MANUFACTURE OF 2-PENTYN-1-OL - The present invention is directed to a process for the manufacture of 2-pentyn-1-ol starting from 2-propyn-1-ol via the following intermediates (I), (II) wherein R | 08-02-2012 |
| 568598000 | At least three oxygens containing | 2 |
| 20080228009 | Process for Preparing 1,1,4,4-Tetraalkoxybut-2-Ene Derivatives - Process for preparing 1,1,4,4-tetraalkoxybut-2-ene derivatives of the general formula (I), | 09-18-2008 |
| 20110054221 | PROCESS OF OXIDATIVE CONVERSION OF METHANOL - A process for preparing polyoxymethylene dimethyl ethers from methanol is disclosed. For example, the process comprises contacting methanol with at least one oxidant in the presence of at least one catalyst wherein the at least one catalyst comprises at least one Group VIB metal component, such as in an amount of from about 0.5 to about 50 wt % (in terms of metal oxide) and at least one Group VIII metal component, such as in an amount of from about 0.2 to about 20 wt % (in terms of metal oxide), and at least one molecular sieve having acidic catalytic activity, such as in an amount of from about 40 to about 95 wt %, based on the total weight of the at least one catalyst for a time sufficient to obtain polyoxymethylene dimethyl ethers. | 03-03-2011 |
| 568600000 | At least three oxygens containing | 8 |
| 20080207954 | Method for Producing Polyoxymethylene Dimethyl Ethers From Methanol and Formaldehyde - A process for preparing tri- and tetraoxymethylene glycol dimethyl ether (POMDME | 08-28-2008 |
| 20120277477 | Method For Manufacturing Hydroxyl Group-containing Acetal Compound - A method for manufacturing an acetal compound represented by the formula [1] in which the steps (A) to (D) as defined herein are performed sequentially, and an acetal compound of the formula [1] which is produced by the method: | 11-01-2012 |
| 20150291722 | Method for Producing Polyoxymethylene Dimethyl Ethers - A method for producing polyoxymethylene dimethyl ethers using fluidized bed reactor is provided. The fluidized bed reactor gives high conversion of feedstock during synthesis of polyoxymethylene dimethyl ethers. The product separation process includes pre-rectification, extractive rectification and vacuum rectification in series. In the pre-rectification process, the side-draw fraction PODE | 10-15-2015 |
| 568601000 | Plural oxyalkylene groups bonded directly to each other | 5 |
| 20110288343 | METHOD FOR SYNTHESIZING POLYOXYMETHYLENE DIMETHYL ETHERS CATALYZED BY AN IONIC LIQUID - It is related to a method for preparing polyoxymethylene dimethyl ethers by a continuous acetalation reaction of trioxymethylene and methanol or methylal catalyzed by an ionic liquid. The processing apparatus used in the method includes a reaction zone, a separation zone, a catalyst regeneration zone and a product dehydration zone. A manner of circulating tubular reaction is used, resulting in a high external heat exchange efficiency, a simple structure of design and a low investment. A film evaporator is used, realizing a rapid separation and recycling of the light component, with a high separation efficiency. The separation of the catalyst solution from the crude product is simple, thereby realizing the regeneration and recycling of the catalyst. | 11-24-2011 |
| 20110313202 | METHOD FOR PREPARING POLYOXYMETHYLENE DIMETHYL ETHERS BY ACETALATION REACTION OF FORMALDEHYDE WITH METHANOL - It is disclosed a method for preparing polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions. The method may include two steps: performing a polymerization reaction of an aqueous formaldehyde solution under catalysis of an ionic liquid IL I to obtain a mixed aqueous solution of trioxymethylene and formaldehyde; and an acetalation reaction of the mixed aqueous solution of trioxymethylene and formaldehyde with methanol is performed under catalysis of an ionic liquid IL II to prepare polyoxymethylene dimethyl ethers. The method may use an aqueous formaldehyde solution as a starting material to prepare polyoxymethylene dimethyl ethers by continuous polymerization and acetalation reactions, achieving a high use ratio of formaldehyde. A film evaporator is used in the invention, realizing a rapid separation and recycling of the light components, with a high separation efficiency. The separation of the catalyst is simple, thereby realizing recycling of the catalyst. | 12-22-2011 |
| 20140114092 | SYSTEM AND METHOD FOR CONTINUOUSLY PRODUCING POLYOXYMETHYLENE DIMETHYL ETHERS - A system and method for producing polyoxymethylene dimethyl ethers (DMM | 04-24-2014 |
| 20160168307 | METHOD FOR PRODUCING POLYOXYMETHYLENE DIMETHYL ETHERS FROM FEEDSTOCK OF CONCENTRATED FORMALDEHYDE | 06-16-2016 |
| 568602000 | Hydroxy bonded directly to each end of a chain which is polyoxymethylene only (e.g., paraformaldehyde, etc., wherein H of -OH may be replaced by a Group IA or IIA light metal) | 1 |
| 20090306435 | Method of preparing enhanced reactive vegetable oils - A method of preparing enhanced reactive vegetable oils wherein the method comprises providing a hydroxy functional vegetable oil having a predetermined hydroxyl value and, under nitrogen, treating the hydroxyl functional vegetable oil with a catalyst using heat and pressure. Any water that is formed is removed. The mixture is heated under pressure and then an alkylene oxide is added while heating under pressure. In one embodiment, thereafter, there is added ethylene oxide and the material is heated and then the material is neutralized with acid. This process results in a primary hydroxyl functional vegetable oil polyol that is an enhanced reactive vegetable oil. | 12-10-2009 |
| 568605000 | Ion exchange resin or sulfuric acid utilized | 1 |
| 20140323771 | PROCESS FOR PREPARING ACETALS AND KETALS - The present invention is concerned with a process for preparing acetals and ketals which comprises (i) reacting an aldehyde or ketone with an alcohol in the presence of a solid acid at a temperature of below −40° C., and (ii) removing water and lower aliphatic alcohol and/or sugar alcohol from the reaction product by pervaporation. | 10-30-2014 |
