Patent classifications
C07C51/487
Elimination of organohalo and oxirane species in carboxylic acid ester streams
The present technology provides a process of reducing, removing or eliminating organohalo, glycidol, and oxirane species from carboxylic acid esters streams and crude and refined triglyceride oils to provide a carboxylic acid ester stream or triglyceride oil with reduced levels or essentially free of organohalo, glycidyl or other oxirane species. The process includes adding to the carboxylic acid ester stream or triglyceride oil an amount of a carboxylate anion and a cation counterion sufficient to react with the organohalo, glycidyl and oxirane species present.
PROCESS FOR PRE-HEATING BOILER FEED WATER IN THE MANUFACTURE OF PURIFIED AROMATIC CARBOXYLIC ACIDS
Processes for manufacturing purified aromatic carboxylic acids include: generating high-pressure steam from boiler feed water supplied to a boiler, the boiler producing a flue gas; removing a portion of the flue gas from the boiler and pre-heating the boiler feed water with removed flue gas and/or pre heating at least a portion of the boiler feed water prior to its introduction into the boiler with a first portion of the high-pressure steam; heating a crude aromatic carboxylic acid in a heating zone using the high-pressure steam, whereby the high pressure steam is condensed in the heating zone to form a high-pressure condensate; and purifying the crude aromatic carboxylic acid to form a purified aromatic carboxylic acid; wherein the boiler feed water comprises at least a portion of the high-pressure condensate.
PROCESS FOR PRE-HEATING BOILER FEED WATER IN THE MANUFACTURE OF PURIFIED AROMATIC CARBOXYLIC ACIDS
Processes for manufacturing purified aromatic carboxylic acids include: generating high-pressure steam from boiler feed water supplied to a boiler, the boiler producing a flue gas; removing a portion of the flue gas from the boiler and pre-heating the boiler feed water with removed flue gas and/or pre heating at least a portion of the boiler feed water prior to its introduction into the boiler with a first portion of the high-pressure steam; heating a crude aromatic carboxylic acid in a heating zone using the high-pressure steam, whereby the high pressure steam is condensed in the heating zone to form a high-pressure condensate; and purifying the crude aromatic carboxylic acid to form a purified aromatic carboxylic acid; wherein the boiler feed water comprises at least a portion of the high-pressure condensate.
Products from the decomposition of plastic waste
This invention relates to the field of plastic waste decomposition. More specifically, the invention comprises products obtained from the decomposition of plastic waste.
Products from the decomposition of plastic waste
This invention relates to the field of plastic waste decomposition. More specifically, the invention comprises products obtained from the decomposition of plastic waste.
Method for producing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4- chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclo-propylpropanoic acid and the crystalline form thereof for use as a pharmaceutical ingredient
The present invention relates to a novel and improved process for preparing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclopropylpropanoic acid of the formula (I), to the compound of the formula (I) in crystalline form and to their use for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of cardiovascular, cardiopulmonary and cardiorenal disorders.
Method for producing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4- chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclo-propylpropanoic acid and the crystalline form thereof for use as a pharmaceutical ingredient
The present invention relates to a novel and improved process for preparing (3S)-3-(4-chloro-3-{[(2S,3R)-2-(4-chlorophenyl)-4,4,4-trifluoro-3-methylbutanoyl]amino}phenyl)-3-cyclopropylpropanoic acid of the formula (I), to the compound of the formula (I) in crystalline form and to their use for the treatment and/or prevention of diseases, in particular for the treatment and/or prevention of cardiovascular, cardiopulmonary and cardiorenal disorders.
REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION
A system and method for removing acetaldehyde from an acetic acid system are disclosed. The method includes, providing a light-ends stream, comprising carbon monoxide, carbon dioxide, acetaldehyde, methyl iodide, methyl acetate, water, acetic acid, or mixtures thereof; condensing the light-ends stream to form one or more liquid phase compositions and a vapor phase composition, comprising a majority of the carbon monoxide and carbon dioxide and a minor portion of the acetaldehyde, methyl iodide, water, and acetic acid; contacting the vapor phase composition with a solvent to produce a liquid stream, comprising methyl iodide, acetaldehyde, and a portion of the solvent; and contacting the liquid stream, and optionally a polyol compound, with an acid catalyst to convert a portion of the acetaldehyde to an aldehyde derivative having a higher boiling point than acetaldehyde.
REMOVAL OF ALDEHYDES IN ACETIC ACID PRODUCTION
A system and method for removing acetaldehyde from an acetic acid system are disclosed. The method includes, providing a light-ends stream, comprising carbon monoxide, carbon dioxide, acetaldehyde, methyl iodide, methyl acetate, water, acetic acid, or mixtures thereof; condensing the light-ends stream to form one or more liquid phase compositions and a vapor phase composition, comprising a majority of the carbon monoxide and carbon dioxide and a minor portion of the acetaldehyde, methyl iodide, water, and acetic acid; contacting the vapor phase composition with a solvent to produce a liquid stream, comprising methyl iodide, acetaldehyde, and a portion of the solvent; and contacting the liquid stream, and optionally a polyol compound, with an acid catalyst to convert a portion of the acetaldehyde to an aldehyde derivative having a higher boiling point than acetaldehyde.
PURIFICATION OF ALIPHATIC DICARBOXYLIC ACIDS PRODUCED BY BIOTECHNOLOGICAL PROCESSES
A process for the purification of saturated linear aliphatic dicarboxylic acids, or mixtures thereof, obtained by biotechnological processes is described.