Juliette
James Jerrick Juliette, Houston, TX US
Patent application number | Description | Published |
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20090299095 | Method for production of aqueous (meth)acrylic acid - The present invention relates to recovery of aqueous (meth)acrylic acid by condensation of a (meth)acrylic acid-containing stream to produce aqueous (meth)acylic acid having a higher concentration of (meth)acrylic acid and a lower concentration of formaldehyde, i.e., not more than 0.1 weight %, than the aqueous (meth)acrylic acid produced using hithertofore known separation methods. The (meth)acrylic acid-containing stream may be the raw product stream of catalytic oxidation at least one C | 12-03-2009 |
Jamie J. Juliette, Houston, TX US
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20130217914 | PROCESS FOR PRODUCING METHYL METHACRYLATE HAVING REDUCED BIACETYL CONTENT - This invention provides a process for reducing biacetyl in alpha-, beta-unsaturated carboxylic acid esters, particularly in acrylic or methacrylic (hereinafter “(meth)acrylic”) esters, which comprise low levels of weak acid. | 08-22-2013 |
20140200366 | METHOD FOR REDUCING FOULING DURING PURIFICATION OF (METH)ACRYLATE ESTERS - The present invention provides a method for reducing accumulation of solid materials when manufacturing a (meth)acrylic acid ester having low biacetyl content (less than 2 ppm) by adding an aromatic diamine under conditions which provide sufficient residence time and thorough mixing to react up to 100% by weight of the biacetyl in the crude (meth)acrylic acid ester stream, prior to separation and purification. A feedback method is also provided for reducing solids accumulation in the separation and purification equipment of such processes by measuring the biacetyl content and adjusting the aromatic diamine addition rate so that excess aromatic diamine can be minimized. A third embodiment provides a method for reversing an accumulation of solid materials during such processes, while still producing a (meth)acrylic acid ester having low biacetyl content (less than 2 ppm), by reducing or ceasing the addition rate of aromatic diamine for a period of time. | 07-17-2014 |
20140323734 | Method for the Preparation of N-Oxyl Hindered Amine Inhibitors - The present disclosure provides a composition and method for the preparation of N-oxyl hindered amine esters by contacting a compound of Formula (I), wherein R | 10-30-2014 |
20140338704 | Method for Cleaning a (Meth)Acrylate Ester Process Tank - Provided is a method for removing deposited solid residue from equipment used in the processing of (meth)acrylic acid or esters, including the steps of dissolving the solid residue in a cleaning solution comprising an organic carboxylic acid to produce a solid residue slurry; and removing the solid residue slurry from the equipment. | 11-20-2014 |
Jamie Jerrick Juliette, Houston, TX US
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20130014645 | METHOD FOR REMOVAL OF ORGANIC COMPOUNDS FROM WASTE WATER STREAMS IN A PROGRESS FOR PRODUCTION OF (METH)ACRYLIC ACID - The present invention provides a method for removal of organic compounds, such as acetic acid, from waste water streams in processes for production of (meth)acrylic acid. In particular, a mixed product gas, comprising (meth)acrylic acid, acetic acid, propylene and acrolein, is subjected to fractional absorption to produce an aqueous product stream comprising (meth)acrylic acid, water and acetic acid, and an absorber off-gas stream comprising propylene and acrolein. The aqueous product stream is distilled to produce a purified (meth)acrylic acid stream and a waste water stream comprising water and acetic acid. The absorber off gas is then contacted with the waste water stream and at least a portion of the acetic acid moves from the waste water stream to the absorber off gas to produce a stripped waste water stream and an enriched absorber off gas. | 01-17-2013 |
20130281737 | METHOD FOR REDUCING EQUIPMENT FOULING IN (METH)ACRYLIC ACID PRODUCTION PROCESS - The present invention provides a method for reducing fouling of equipment during separation and purification steps of (meth)acrylic acid production by early removal of aldehyde impurities by adding a hydrazide compound well upstream of the separation and purification steps. In particular, carbodhydrazide may be added as an aldehyde scavenging agent to aqueous (meth)acrylic acid prior to dehydration and purification steps. | 10-24-2013 |