Patent application number | Description | Published |
20080227942 | Hydroxyphenyl acrylate monomers and polymers - New syntheses of phenolic acrylate monomers are provided as well as polymers comprising such phenolic acrylate monomers. Preferred polymers of the invention are useful as a resin component of chemically-amplified positive-acting resists. | 09-18-2008 |
20090030165 | Process for manufacturing reduced water content (meth) acrylic acid - A method is provided herein for purifying (meth)acrylic acid to provide a purified (meth)acrylic acid product having a low aldehyde concentration and not more than 0.2 wt % water. One embodiment of the method includes distilling (meth)acrylic acid in the presence of an aldehyde treating compound. Another embodiment of the method includes also distilling crude (meth)acrylic acid in the presence of a reactive drying agent. (Meth)acrylic acid produced in this manner is especially suitable for use in specialty (meth)acrylic acid polymers, such as for example superabsorbent polymers, binders, and ethylene-(M)AA copolymers. | 01-29-2009 |
20090048411 | Processes for producing ethylene and carbon monoxide mixtures from ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 500° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 02-19-2009 |
20090082530 | Catalytic process for producing ethylene and carbon monoxide mixtures from ethane - A method for producing a mixture of ethylene and carbon monoxide by contacting ethane and an oxygen source with a catalyst comprising iron oxide supported on an inorganic material to produce ethylene and carbon monoxide. A method for producing an alkyl propionate by steps of: (a) contacting ethane and an oxygen source at a temperature of at least 600° C. to produce ethylene; (b) contacting an alcohol, ethylene and carbon monoxide with an ethylene carbonylation catalyst to produce the alkyl propionate; and (c) separating the alkyl propionate from byproducts and starting materials. The method further comprises condensing the alkyl propionate with formaldehyde to produce an alkyl methacrylate. | 03-26-2009 |
20090171109 | Integrated process for preparing a carboxylic acid from an alkane - The present invention relates to an integrated process for producing unsaturated carboxylic acids from the corresponding C | 07-02-2009 |
20090182186 | Supported catalyst for conversion of propane to propene and its use in a process for that conversion - A process for the conversion of propane to propene is disclosed wherein a silica chromium catalyst composition is contacted with a propane feed stream and a carbon dioxide. The silica chromium catalyst composition is further disclosed wherein the composition, optionally, includes a promoter component. | 07-16-2009 |
20090304569 | Activated ignition promoters for metal catalyzed reactions - The inventors have discovered catalyst ignition promoters comprising one or more activated metals. The catalyst ignition promoters are easily prepared from a number of metal sources, including spent catalysts, are activated quickly and provide effective catalyst ignition independent of the quality of the metals that comprise the catalytic converter. The one or more activated metals comprising the ignition promoter are prepared by contacting them with one or more chemical treatments. The activated metal components are prepared into suitable articles, referred to as ignition strips, that are placed in contact with one or more oxidative coupling catalysts, typically in the form of gauzes. The ignition promoters reduce the activation energy for catalyst ignition (also referred to “light off”), enabling ignition of catalyst gauzes that are new, used, contaminated, damaged and combinations thereof at a relatively low auto-ignition temperatures. | 12-10-2009 |
20110105708 | PROCESS FOR MANUFACTURING REDUCED WATER CONTENT (METH)ACRYLIC ACID - A method is provided herein for purifying (meth)acrylic acid to provide a purified (meth)acrylic acid product having a low aldehyde concentration and not more than 0.2 wt % water. One embodiment of the method includes distilling (meth)acrylic acid in the presence of an aldehyde treating compound. Another embodiment of the method includes also distilling crude (meth)acrylic acid in the presence of a reactive drying agent. (Meth)acrylic acid produced in this manner is especially suitable for use in specialty (meth)acrylic acid polymers, such as for example superabsorbent polymers, binders, and ethylene-(M)AA copolymers. | 05-05-2011 |
20110105784 | Multi-staged catalyst systems and process for converting alkanes to alkenes and to their corresponding oxygenated products - Alkenes, unsaturated saturated carboxylic acids, saturated carboxylic acids and their higher analogues are prepared cumulatively from corresponding alkanes utilizing using a multi-staged catalyst system and a multi-stage process which comprises steam cracking of alkanes to corresponding alkenes at flame temperatures and at short contact times in combination with one or more oxidation catalysts for catalytically converting the corresponding alkenes to further corresponding oxygenated products using short contact time reactor conditions. | 05-05-2011 |