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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 7728168 | Process to manufacture 4-methoxybenzoic acid from herbal anethole and the use of 4-methoxybenzoic acid in cosmetic and dermatologic products as well as foodstuffs A process to manufacture 4-methoxybenzoic acid from anethole. This raw material can be obtained from a variety of plant materials and thus offers a renewable alternative to fossil raw materials. Another aspect of the present invention is the use of 4-methoxybenzoic ... | 06/01/2010 |
| 7534912 | Process for producing pyromellitic acid A process for producing pyromellitic acid which comprises step A for oxidizing durene, thereby obtaining a reaction mixture comprising trimethyl benzoic acid, trimethyl benzyl alcohol and trimethyl benzaldehyde, step B for separating trimethyl benzoic acid, trimethy... | 05/19/2009 |
| 7357902 | Process for the removal of oxygen from olefin-containing process streams Process for the removal of oxygen from a gas mixture comprising oxygen, at least one olefin, hydrogen, carbon monoxide and optionally at least one alkyne, the ratio of oxygen:hydrogen in the gas mixture being 1 part by volume of oxygen to at least 5 parts by volume ... | 04/15/2008 |
| 7342128 | Method for oxidizing a slurry composition in a post oxidation zone in the presence of added steam The present invention relates to a process for oxidizing a slurry composition in a post oxidation zone in the presence of added steam. More specifically, the present invention relates to a process for oxidizing a crude terephthalic acid composition in a post oxidati... | 03/11/2008 |
| 7341972 | Singlet oxygen catalysts including condensed carbon molecules The present invention relates to novel singlet oxygen catalysts useful for the production of specialty chemicals. The catalysts include a core material selected from amine coated polymeric beads, amine coated glass beads and multi-generational dendrimers to which co... | 03/11/2008 |
| 7202380 | Production method of pyromellitic acid and pyromellitic anhydride In a method of producing pyromellitic acid by liquid-phase oxidizing 2,4,5-trimethylbenzaldehyde in a water solvent with molecular oxygen, a recrystallization mother liquor separated in a recrystallization step is recycled to the oxidation step after a part of the w... | 04/10/2007 |
| 7126024 | Process and catalyst for dehydrogenating primary alcohols to make carboxylic acid salts This invention is directed to a process for making a salt of a carboxylic acid. The process comprises contacting a catalyst with an alkaline mixture comprising a primary alcohol. In one embodiment, the catalyst comprises a metal supporting structure (preferably a me... | 10/24/2006 |
| 6888023 | Process for producing pyromellitic acid A process for producing pyromellitic acid which comprises oxidizing 2,4,5-trimethylbenzaldehyde and/or its oxidized derivative in the presence of a catalyst containing iron, manganese and bromine, or additionally containing zirconium or cerium continuously or semi-c... | 05/03/2005 |
| 6765113 | Production of aromatic carboxylic acids A process for the production of an aromatic carboxylic acid comprising contacting in the presence of a catalyst, within a continuous flow reactor, one or more precursors of the aromatic carboxylic acid with an oxidant, such contact being effected with said precursor... | 07/20/2004 |
| 6740776 | Air oxidation of an aromatic aldehyde to an aromatic acid A low temperature process for preparing an aromatic acid having formula (I), said process comprising reacting an aromatic aldehyde having formula (II) with a gas having an ox... | 05/25/2004 |
| 6476258 | Process for producing aryloxyacetic acids An industrially advantageous process for producing an aryloxyacetic acid represented by the formula (2): ##STR1## wherein m represents an integer of 1 or 2, n represents an integer from 0 to 4, Ar represents a aromatic hydrocarbon ring, each Rs independen... | 11/05/2002 |
| 6255525 | Process for preparing purified carboxylic acids A process for preparing an aromatic carboxylic acid having improved purity comprising contacting at an elevated temperature and pressure a mixture comprising an impure aromatic carboxylic acid and a solvent in the presence of hydrogen gas with a carbon ca... | 07/03/2001 |
| 6245936 | Process for the selective preparation of a 2-hydroxybenzoic acid and a 4-hydroxybenzaldehyde and derivatives thereof The present invention concerns a process for the preparation of a 2-hydroxybenzoic acid and of a 4-hydroxybenzaldehyde and derivatives thereof from a mixture of two phenolic compounds, one carrying a formyl or hydroxymethyl group in the 2 position, and th... | 06/12/2001 |
| 5998572 | Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating temperature/conversion relationship in multi-stage arrangements Methods and devices for controlling the oxidation of a hydrocarbon to an acid by regulating the temperature hold-up time, and conversion in consecutive reaction zones. The temperature in the consecutive reaction zones progressively decreases, while the ho... | 12/07/1999 |
| 5635197 | Treatment and prevention of prostatic cancer metastasis A series of benzoquinolin-3-ones are pharmaceuticals effective in preventing the development of prostatic cancer, or preventing or treating the metastasis to bone of prostatic cancer.... | 06/03/1997 |
| 5629007 | Method of preventing prostatic cancer development A series of benzoquinolin-3-ones are pharmaceuticals effective in preventing the development of prostatic cancer, or preventing or treating the metastasis to bone of prostatic cancer.... | 05/13/1997 |
| 5608106 | Preparation of alkoxyalkanoic acids A process for preparing an alkoxyalkanoic acid by reacting the corresponding alkoxyalkanol with a resin-supported stable free radical nitroxide in the presence of a NOx -generating compound and, optionally, an oxidant and/or a solvent at a temp... | 03/04/1997 |
| 5481032 | Process for the preparation of halogenated benzoic acids A process for the preparation of halogenated benzoic acids of formula (1): ##STR1## in which R1, R2, R3, R4 and R5 are hydrogen, fluorine, chlorine or bromine atoms or C1 -C6 -al... | 01/02/1996 |
| 5463114 | Process for the production of ether carboxylic acids and salts thereof Ether carboxylic acids of the formula (I): R--(OCm H2m)n --O--CH2 COOM (I) wherein R is an alkyl group having from 1 to about 22 carbon atoms, an aryl group or an aralkyl group; m is 2 or 3; n is a number from ... | 10/31/1995 |
| 5292934 | Method for preparing aromatic carboxylic acids Disclosed is a method for preparing an aromatic carboxylic acid comprising oxidizing in the liquid phase an aromatic feed compound containing at least one alkyl or acyl group with a molecular oxygen-containing gas, in a solvent comprising a low molecular ... | 03/08/1994 |
| 5239075 | Process for the preparation of benzo (F) quinolinones This invention relates to a process for the preparation of hexa- and octahydrobenzo[f]quinolin-3-ones.... | 08/24/1993 |
| 5223642 | Process for the preparation of ether carboxylic acids from carbohydrates and derivatives thereof and their use A process for the preparation of ether carboxylic acids by ethoxylation of carbohydrates followed by catalytic oxidation and the use of the products in detergents or cleaning agents.... | 06/29/1993 |
| 5179097 | Salts of non-steroidal anti-inflammatory carboxylic acids and anti-lipidemic carboxylic acids Novel choline salts of non-steroidal anti-inflammatory carboxylic acids and anti-lipidemic carboxylic acids are described. Additionally, blends of choline salts with the above carboxylic acids are also described. The new salts and compositions offer new t... | 01/12/1993 |
| 5157152 | Process for the oxidation of a tetrahydrophthalic acid A process for oxidation of a tetrahydro compound of the formula ##STR1## wherein R and R' independently are H, alkyl, aryl or halo, to a glycol of the formula ##STR2## comprises treating the tetrahydro compound with hydrogen peroxide at an ... | 10/20/1992 |
| 5095143 | Method for increasing the efficiency of liquid phase oxidation reactions A method to oxidize an oxidizable component in a liquid phase with an oxygen-containing gas is disclosed. The method comprises mixing the liquid phase and gas phase in a reactor with a rotating agitator element operated at constant power.... | 03/10/1992 |
| 5087742 | Process for preparing aromatic polycarboxylic acids A process for preparing aromatic polycarboxylic acids is disclosed, wherein a benzil derivative is oxidized with molecular oxygen in the presence of an oxidation catalyst consisting substantially of at least one heavy metal catalyst selected from cobalt a... | 02/11/1992 |
| 5041634 | Process for the preparation of carboxylated aromatic hydroxy compounds Process for the preparation of compounds of the formula HO-Ar-COOH in which Ar is a substituted or unsubstituted aromatic ring system, by oxidizing, by means of oxygen or compounds which donate oxygen, compounds of the formula HO-Ar-R1 in which... | 08/20/1991 |
| 4990660 | Preparation of aromatic hydroxycarboxylic acids Aromatic hydroxycarboxylic acids of the formula (HO--)n A--COOH where n is 1 or 2 and A is a radical from the benzene, naphthalene, biphenyl, diphenyl ether, diphenyl sulfide or diphenyl sulfone series, are prepared by a process in which an acylated... | 02/05/1991 |
| 4981997 | Process for the preparation of 2,5-diarylaminoterephthalic acids A process for the preparation of 2,5-diarylaminoterephthalic acids by oxidation of 2,5-diarylamino-3,6-dihydroterephthalic acid esters using oxygen or oxygen-containing gases, preferably air, in alcoholic-alkaline or alcoholic-aqueous-alkaline solution or... | 01/01/1991 |
| 4976893 | Process for preparing carboxylic acids The invention relates to a process for preparing carboxylic acids by platinum-catalyzed oxidation of primary alcohols of limited water solubility with oxygen in a mixture of water and a solubilizer. The solubilizer used is an ether of the general formula ... | 12/11/1990 |
| 4959494 | Oxidation of organic compounds with pyrochlore catalysts A method for oxidizing organic compounds by contacting organic compounds with molecular oxygen in the presence of a noble metal pyrochlore having the formula: A2+x B2-x O7-y wherein A is a pyrochlore structure metal cation, and... | 09/25/1990 |
| 4952721 | Process for oxidizing esters of methyl-substituted phenol compounds to aromatic carboxylic acids A process is disclosed for the oxidation of esters of para- and meta-methyl-substituted phenols to the corresponding aromatic carboxylic acid in the presence of a promoter comprising an anhydride of a lower aliphatic carboxylic acid and a heavy metal cata... | 08/28/1990 |
| 4940808 | Process for ozonization of unsaturated organic compounds A process for the ozonization of unsaturated organic compounds in a reaction column through which the unsaturated compounds--in solution in a protic solvent--and an ozone-containing carrier gas and an inert coolant are passed downward in co-current flow t... | 07/10/1990 |
| 4935540 | Process for the preparation of aryloxyacetic acid Process for the preparation of an aryloxyacetic acid by oxidation of aryloxyethanol of the formula: ##STR1## wherein m represents 1 or 2, n represents the numeral which results from the difference between 6 and m and R either individually or independ... | 06/19/1990 |
| 4892970 | Staged aromatics oxidation in aqueous systems Improved acid yield and product quality are realized in the oxidation of aromatic hydrocarbons in a two-stage process, employing an aqueous solvent system and an increased proportion of bromine, and, optionally, of catalytic metals, in the second stage.... | 01/09/1990 |
| 4886906 | Process for producing 2,6-naphthalene dicarboxylic acid A process for producing 2,6-naphthalene dicarboxylic acid which comprises oxidizing a 2-alkyl-6-acyl naphthalene with molecular oxygen-containing gas in the presence of a catalyst containing cobalt, manganese, bromine and at least one metal selected from ... | 12/12/1989 |
| 4804777 | Process for the preparation of aryloxyacetic acid Process for the preparation of an aryloxyacetic acid by oxidation of aryloxyethanol of the formula: ##STR1## wherein m represents 1 or 2, n represents the numeral which results from the difference between 6 and m and R either individually or independ... | 02/14/1989 |
| 4791224 | Process for preparation of an oxyacetic acid/hydroxyethyl ether compound Process for the preparation of an aryloxyacetic acid/hydroxyethyl ether by oxidation of aryloxyethanol of the formula: ##STR1## wherein R either individually or independently of one another represents hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkox... | 12/13/1988 |
| 4778924 | Process for the production of cinnamic acid Cynnamic aldehyde disolved in an aromatic hydrocarbon is oxidized in the liquid phase with molecular oxygen at a temperature in the range of 30°-80° C. in the presence of a cobalt compound and water.... | 10/18/1988 |
| 4764638 | Method for the preparation of 2,6-naphthalene dicarboxylic acid Disclosed is a method for the preparation of 2,6-naphthalene dicarboxylic acid from 2-acyl-6-alkyl naphthalene, especially 2-acetyl-6-methylnaphthalene, by oxidation in two steps with oxygen or air. The catalyst in the first oxidation is based on manganes... | 08/16/1988 |
