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WO/2008/028429A1 |
In a process for recovering terephthalic acid from its salts solution an aqueous solution of a terephthalic acid salt is fed into a cathode compartment of an electro dialysis cell and an electrolyte to an anode compartment, the resulting...
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WO/2008/025965A2 |
The invention relates to retinoid compounds of one of the following formulae: Formula 6 a; R = H D1 R = Me (i) PaIa-CO2R' QC = H or Me) (ii)Imeta-CO2R' (R' = H or Me) (iii) ortho-CO2R' (R1 = H or Me) Formula 10 a,R = H b; R = Me (i) PaIa...
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WO/2008/020218A1 |
Disclosed are metal organic frameworks that adsorb nitric oxide, NO-loaded metal organic frameworks, methods of preparing the NO-loaded metal organic frameworks, methods of releasing the nitric oxide into a solution or into air, and uses...
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WO/2008/019582A1 |
A supported Pd/C catalyst, wherein the Pd supported to the active carbon carrier is present in the microcrystalline state, and the microcrystallines whose diameters are less than 2.5nm take up more than 80wt% of the total amount of the P...
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WO/2008/017514A1 |
The present invention relates to a method of producing an adsorbent comprising hydrophilic and porous metal-organic framework (MOF) structures. This adsorbent finds use in heat stores or heat pumps.
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WO/2008/013100A1 |
A method of replacing the first dispersion medium of a raw slurry consisting of a first dispersion medium and crystalline isophthalic acid with a second dispersion medium. The raw slurry is fed into the vertically extending cylindrical p...
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WO/2008/012118A1 |
The invention relates to a process for alkaline hydrolysis of carboxylic acid derivatives, especially carboxylic esters, to carboxylic acids, wherein, for the alkaline hydrolysis of the carboxylic acid derivatives, red mud which is produ...
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WO/2008/010785A2 |
A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. T...
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WO/2007/145134A1 |
A method of drying an aromatic carboxylic acid while stably using a fluidized-bed dryer. It mitigates problems in drying with a fluidized-bed dryer, such as clogging with and adhesion of crystals of an aromatic carboxylic acid inside the...
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WO/2007/145149A1 |
A method of replacing the first dispersion medium of a raw slurry composed of a first dispersion medium and crystal terephthalic acid with a second dispersion medium. The raw slurry is fed to a vertically extending cylindrical part of cy...
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WO/2007/139679A2 |
This invention relates to a process for the manufacture of aromatic carboxylic acids by exothermic liquid phase oxidation of an aromatic feedstock. More particularly, this invention relates to the efficient energy recovery of the exother...
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WO/2007/133377A1 |
A method for integrating energy resources between a process for synthesizing terephthalic acid and a process for the solid-state polymerization of a polyester, which comprises generating steam from the synthesis of terephthalic acid, pro...
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WO/2007/129767A1 |
Disclosed is a photoelectric conversion material containing a fullerene derivative expressed as C60(R1)5(R2) (wherein R1s independently represent a substituted organic group and R2 represents a hydrogen atom or an optionally substituted ...
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WO/2007/129669A1 |
A method of multistage crystallization which comprises: sending a solution of terephthalic acid or a slurry having terephthalic acid part of which has precipitated (raw-material slurry) to a first crystallization tank; precipitating tere...
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WO/2007/125096A1 |
Method for gas phase oxidation, in which a gaseous flow which comprises at least one aromatic hydrocarbon and molecular oxygen is directed through one or more catalyst layers, wherein a moderator layer is arranged between two catalyst la...
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WO/2007/116906A1 |
The object is to provide an industrially advantageous process for producing 5-phenylisophthalic acid with excellent selectivity and in a high yield, which can recycle/reuse a catalyst. Disclosed is a process for production of 5-phenyliso...
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WO/2007/113872A1 |
The present invention relates to a process of recovering aromatic dicarboxylic acids with low metal contaminants from manufactured articles, such as beverage bottles, fibers and films, comprising aromatic polyesters, whether or not those...
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WO/2007/109804A2 |
The present invention relates to extracts of cinnamon species plant material prepared by supercritical CO2 extractions methods.
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WO/2007/106288A2 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system employs an evaporative removal step downstream of oxidative digestion. The evaporative removal step removes a portion of the l...
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WO/2007/105052A2 |
A multiple-metal complex-containing compound ia accordance with an embodiment has a plurality of metal complexes in each of which a ligand is coordinated to one metal atom or a plurality of metal atoms of the same kind. The plurality of ...
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WO/2007/106289A1 |
Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides ...
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WO/2007/106287A1 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes an oxidative digestion reactor/zone configured to provide optimized residence time distribution for the solid and liq...
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WO/2007/103064A1 |
Disclosed is a process and apparatus for treating a purge stream in a carboxylic acid production process. The process employs a purge process that allows for the separation of oxidation byproducts into benzoic acid and non-benzoic acid o...
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WO/2007/103029A1 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes a multi-stage oxidative digestion system for processing an improved initial slurry from primary oxidation. The multi-...
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WO/2007/103047A2 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes an novel method for heating the slurry and/or reaction medium subjected to oxidative digestion.
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WO/2007/103028A2 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system includes an optimized post-digestion cooling stage that provides a TPA product having enhanced purity, while minimizing costs ...
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WO/2007/103039A2 |
Disclosed is a process and apparatus for treating a purge stream in a carboxylic acid production process. The process employs a purge process that allows for the separation of oxidation byproducts into benzoic acid and non-benzoic acid o...
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WO/2007/103021A1 |
Disclosed are processes and apparatus for producing a carboxylic acid. The processes employ a concentration section disposed before and/or after a product isolation section, which allows for oxidation byproducts produced in the process t...
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WO/2007/103022A1 |
Disclosed are methods and apparatus for use in producing a low-moisture carboxylic acid wet cake. Such a low-moisture wet cake can comprise less than about 12 weight percent liquid and can be achieved by washing a carboxylic acid wet cak...
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WO/2007/103023A1 |
Disclosed are methods and apparatus for isolating a carboxylic acid. The processes employ at least two decanter centrifuges and at least one reslurry zone as a product isolation system in a carboxylic acid production process. The product...
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WO/2007/103066A1 |
Disclosed are processes and apparatus for producing a carboxylic acid. The processes employ a concentration section disposed before and/or after a product isolation section, which allows for oxidation byproducts produced in the process t...
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WO/2007/103063A2 |
A process is provided for producing an enriched carboxylic acid compositions produced by contacting composition comprising a carboxylic acid with an enrichment feed in an enrichment zone to form an enriched carboxylic acid composition. T...
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WO/2007/103024A2 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. A solvent purification system is employed to remove of at least one aromatic impurity present in a solvent purification feed. At least ab...
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WO/2007/103068A1 |
Disclosed are methods and apparatus for isolating a carboxylic acid. The processes employ a rotary pressure drum filter as a product isolation device in a carboxylic acid production process. The product isolation device is employed to is...
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WO/2007/103046A2 |
Disclosed is an optimized system for more efficiently and economically producing terephthalic acid. The system minimizes or eliminates the need for liquor exchange upstream of oxidative digestion and/or upstream of substantial cooling of...
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WO/2007/094936A1 |
In a process for reducing the visible color of a crude aromatic dicarboxylic acid containing colored contaminants, an aqueous ammonia solution of the crude aromatic dicarboxylic acid is prepared and contacted with hydrogen in a reactor i...
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WO/2007/092183A2 |
Disclosed is a process to produce a purified carboxylic acid product. The process comprises removing impurities from a crude carboxylic acid slurry in a solid-liquid displacement zone to form a slurry product. The slurry product is furth...
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WO/2007/090809A1 |
The present invention relates to processes for preparing a porous metal-organic framework material that comprise the step of reacting in the liquid phase a reaction mixture composed of at least one copper compound with at least one at le...
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WO/2007/082639A1 |
Disclosed is the use of esters which comprise branched alkyl groups and represent reaction products of alcohols of general formula (I) R1OH, wherein R1 represents a branched alkyl radical containing 10 to 40 C atoms, with a) aliphatic di...
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WO/2007/081507A2 |
Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides ...
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WO/2007/081513A1 |
Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides ...
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WO/2007/073658A1 |
Disclosed is a process for separation of crude terephthalic acid (CTA) by using a rotary pressure filter (RPF), in which said filter is divide into four functional sections, i.e. hydraulic filtering section, washing section by acetic aci...
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WO/2007/076384A2 |
A process for ethanolysis of PET is disclosed wherein a feed comprising PET is reacted with ethanol and recovering ethylene glycol and an aromatic diethyl ester such as diethyl isophthalate and/or diethyl terephthalate. PET, or a terpoly...
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WO/2007/066529A1 |
Disclosed is a method for producing tetrafluoroterephthalic acid difluoride which is characterized in that tetrachloroterephthalic acid dichloride and potassium fluoride are reacted with each other in sulfolane in the presence of 0.3-0.6...
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WO/2007/066532A1 |
Disclosed is a method for producing tetrafluoroterephthalic acid difluoride which is characterized in that tetrachloroterephthalic acid dichloride and potassium fluoride are reacted with each other in the presence of dimethyl sulfone.
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WO/2007/065513A1 |
The invention relates to a process for preparing an aromatic carboxylic acid of the general formula (I) in which X is either a phenyl group and Y is hydrogen or X and Y together with the benzene ring A form a naphthalene ring, and n is a...
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WO/2007/038258A1 |
A cost effective and energy efficient distillation technique for recovering acetic acid from a waste water stream containing acetic acid and water generated during terephthalic acid production employs a liquid-liquid extraction column an...
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WO/2007/034812A1 |
Disclosed are a carrier for use for separation purpose and a method for separation of a compound which enable a chemical reaction to be performed in a liquid phase, enable a compound of interest to be separated from the liquid phase afte...
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WO/2007/023295A2 |
A process for the preparation of a multi-dimensional microporous metal-organic compound comprising the steps of providing a first reactant which includes at least one metal in ionic form, providing a second reactant which includes a brid...
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WO/2007/021488A2 |
A process is disclosed that relates to the removal of impurities, specifically benzoic acid, from a mother liquor produced in the synthesis of carboxylic acid, typically terephthalic acid.
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