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Novartis AG
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Ciba Geigy AG
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Publication of ES259052A1publicationCriticalpatent/ES259052A1/en
C07C231/02—Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C231/00—Preparation of carboxylic acid amides
C07C231/12—Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
C08K5/00—Use of organic ingredients
C08K5/16—Nitrogen-containing compounds
C08K5/20—Carboxylic acid amides
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Chemical & Material Sciences
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Organic Chemistry
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Chemical Kinetics & Catalysis
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Health & Medical Sciences
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Medicinal Chemistry
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Polymers & Plastics
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Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Dehydrogenation process for the preparation of 2,5-dianylidoterephthalic esters by dehydrogenation of 3,6-dihydro-2,5-dianylideterephthalic esters with air, characterized in that the dehydrogenation is carried out in the presence of such a quantity by weight, of an aromatic amine as a diluent, corresponding at least to the amount by weight of the substance to be dehydrogenated, for which purpose it is possible to use, if necessary, even further diluents, the amount by weight of which, however, should at most be so large as the amount by weight of the aromatic amine. (Machine-translation by Google Translate, not legally binding)
ES0259052A1959-06-191960-06-18Dehydrogenation procedure (Machine-translation by Google Translate, not legally binding)
ExpiredES259052A1
(en)
Procedure for copolimerizing with olephin aromatic vinyl compounds with a single double link containing up to four carbon atoms (Machine-translation by Google Translate, not legally binding)