| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 568749000 | Purification or recovery | 15 |
| 20100105960 | PROCESS FOR RECOVERING PHENOL FROM A BPA WASTE STREAM - An improved process for recovering phenol from a bisphenol-A residue stream by reconfiguring the distillation column and the cracking reactor in a way that separates the reboil/distillation heat load and the cracking heat load, so that separate heat sources are used. | 04-29-2010 |
| 20160008735 | PROCESS FOR PURIFYING HYDROCARBONS | 01-14-2016 |
| 568750000 | From mixture of phenols | 5 |
| 20100152495 | Production of highly pure hydroquinone - A process for preparing highly pure hydroquinone freed of the impurities resulting from the production thereof includes at least the following steps: a) the crude hydroquinone in a liquid form and comprising at least resorcin and pyrogallol as impurities is subjected to a controlled cooling ensuring the crystallization of pure hydroquinone, b) the pure hydroquinone crystals are separated from the mother liquors, c) heating and partial melting thereof is next is carried out, d) the purified hydroquinone is then completely melted, and e) the purified hydroquinone is recovered. | 06-17-2010 |
| 20140142347 | PROCESS FOR PREPARING A SALT OF A SULFURIZED ALKYL-SUBSTITUTED HYDROXYAROMATIC COMPOSITION - Disclosed herein is a process for preparing a salt of a sulfurized alkyl-substituted hydroxyaromatic composition having a reduced content of unsulfurized alkyl-substituted hydroxyaromatic compound and its unsulfurized metal salt. The process involves the steps of: (a) providing a composition comprising (i) a salt of a sulfurized alkyl-substituted hydroxyaromatic compound; (ii) an unsulfurized alkyl-substituted hydroxyaromatic compound and (iii) an unsulfurized metal salt of the alkyl-substituted hydroxyaromatic compound; wherein the alkyl-substituted hydroxyaromatic compound is derived from alkylation of a hydroxyaromatic compound with one or more olefins comprising C | 05-22-2014 |
| 20140163261 | METHOD FOR PRODUCING PARATHYMOL - The present invention relates to a process for the preparation of 4-isopropyl-3-methylphenol (p-thymol) from distillation residues of thymol production. | 06-12-2014 |
| 568751000 | Plural phenols recovered separately | 2 |
| 20150141708 | PROCESS FOR PURIFYING PRODUCTS FROM COAL TAR - A process for purifying at least one product from coal tar is described. The process involves separating a coal tar fraction having a boiling point in the range of about 180° C. to about 230° C. into an acidic portion and a non-acidic portion by contacting the fraction with a caustic compound. The acidic portion is separated into a cresol portion and a xylenol portion, and the non-acidic portion is separated into a naphthalene portion and a naphthalene co-boiler portion. The acidic portion and the non-acidic portions are separated by contacting with an adsorbent comprising small, discrete crystallites, the adsorbent having less than 10 wt % amorphous binder component. The various portions can be separated in a similar manner. | 05-21-2015 |
| 20160067673 | ZEOLITE ADSORBENTS COMPRISING ZEOLITE EMT, PROCESS FOR PREPARING THE SAME AND USES THEREOF - The present invention relates to zeolite adsorbents based on agglomerated crystals of zeolite EMT comprising barium and/or potassium. These adsorbents find applications in the separation of aromatic C8 isomer fractions, especially of xylenes, in the separation of substituted toluene isomers, such as nitrotoluene, diethyltoluene and toluenediamine, and in the separation of cresols, and in the separation of polyhydric alcohols, such as sugars. | 03-10-2016 |
| 568753000 | Of polyhydroxy phenol | 2 |
| 20100137651 | METHOD FOR PRODUCTION OF A LIQUID COMPOSITION OF AN ORTHO-DIHYDROXYBENZYL COMPOUND OF HIGH PURITY AND SAID COMPOSITION - The invention relates to a process for the preparation of a liquid composition of an ortho-dihydroxybenzyl compound of high purity characterized in that it consists inpurifying the initial ortho-dihydroxybenzyl compound by distillation and recovering the condensed ortho-dihydroxybenzyl compound in an apparatus resistant to corrosion by the latter, and then mixing it with an organic solvent in a storage tank which is lined or made of a material which does not lead to metallic pollution. The invention also relates to a liquid composition of an ortho-dihydroxybenzyl compound of high purity comprising said compound and an organic solvent of said compound obtained according to said process. | 06-03-2010 |
| 20120022297 | PURIFICATION METHOD OF DIHYDROXYBENZENE - A purification method of dihydroxybenzene comprising the following steps, for obtaining purified dihydroxybenzene from crude dihydroxybenzene containing at least isopropenylphenol and hydroxyacetophenone as impurities: first extraction step: water is added to crude dihydroxybenzene to prepare a dihydroxybenzene aqueous solution A, then, the solution is subjected to extraction by allowing it to contact with an extraction solvent ( | 01-26-2012 |
| 568754000 | Of phenol prepared by cleavage of hydroperoxide or other peroxide | 1 |
| 20100280285 | Treatment of Phenol - A process for the removal of by-products from a phenolic mixture, which process may include the following steps: subjecting a phenolic mixture to extractive distillation to produce an initial phenolic mixture, contacting the initial phenolic mixture containing phenol and one or more by products with a catalyst to produce a first purified phenol product mixture, and distilling the first purified phenol product mixture to produce a second purified phenol product mixture; wherein the extractive distillation is carried out in two columns, a higher pressure column and a lower pressure column. | 11-04-2010 |
| 568756000 | Of phenol having acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring | 2 |
| 20100331579 | DIALKYL PHENOLS - The present invention relates to a method for producing 4-isopropyl-3-methyl-phenol by alykylizing meta-cresol, distilling, and crystallizing. | 12-30-2010 |
| 20130197277 | Method for Cultivation of Monarda Fistulosa - A method for cultivating | 08-01-2013 |
| 568758000 | Sorbent material utilized | 2 |
| 20150065755 | PHENOL PURIFICATION PROCESS - The present invention provides an easy process for purifying phenol by separating carbonyl compounds through selective hydrogenation of the compounds to the corresponding alcohols then distillation. The phenol purification process of the present invention comprises bringing phenol into contact with a copper-based catalyst in the presence of hydrogen to convert carbonyl compounds contained in the phenol to the corresponding alcohol compounds, and separating the alcohol compounds and phenol by distillation. | 03-05-2015 |
| 20150306565 | ZEOLITIC ADSORBENTS, THEIR PROCESS OF PREPARATION AND THEIR USES - The present invention relates to zeolitic adsorbents based on small agglomerated crystals of zeolite X comprising barium, combining optimum properties in terms of selectivity and of mechanical strength. | 10-29-2015 |
| 568759000 | From substance which includes sulfur or a sulfur containing compound | 1 |
| 20110213187 | HYDROCARBON RECOVERY FROM SULFONES FORMED BY OXIDATIVE DESULFURIZATION PROCESS - The process provided herein is concerned with recovery of hydrocarbons from sulfones using an individual alkali and alkaline-earthy base and a mixture of thereof. As the starting materials are sulfones generated by ODS and commercially inexpensive alkali and alkaline-earth bases, the cost and ecological impact of solid waste disposal is minimized. | 09-01-2011 |
