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Применить Всего найдено 6. Отображено 6.
02-12-2004 дата публикации

Felxible method for the common production of formic acid, a carboxylic acid having at least two carbon atoms, and/or the derivatives of the same

Номер: US20040242924A1
Автор: Peter Zehner, Jorg Pastre, Wolfram Stuer
Принадлежит:

Formic acid and a carboxylic acid having at least two carbon atoms and/or derivatives thereof are prepared jointly by a process in which (a) a formic ester (I) is transesterified with a carboxylic acid having at least two carbon atoms (II) to form formic acid (III) and the corresponding carboxylic ester (IV); and (b) at least part of the carboxylic ester (IV) formed in step (a) is carbonylated to give the corresponding carboxylic anhydride (V).

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Номер записи: 1
09-03-2006 дата публикации

Flexible method for the joint production of (i) formic acid, (ii) a carboxylic acid comprising at least two carbon atoms and/or the derivatives thereof, and (iii) a carboxylic acid anhydride

Номер: US20060052631A1
Автор: Jorg Pastre, Kai Exner, Wolfram Stuer, Elke Geibler, Otto Machhammer
Принадлежит: BASF AKTIENGESELLSCHAFT

Disclosed is a method for jointly producing (i) formic acid (III); (ii) a carboxylic acid comprising at least two carbon atoms (II) and/or the derivatives thereof; and (iii) a carboxylic acid anhydride (VII). According to said method, (a) a formic acid ester (I) is transesterfied to formic acid (III) and the corresponding carboxylic acid ester (IV) by means of a carboxylic acid comprising at least two carbon atoms (II); (b) at least one portion of the carboxylic acid ester (IV) formed in step (a) is carbonylated in order to obtain the carboxylic acid anhydride (V); and (c) at least one portion of the carboxylic acid anhydride (V) formed in step (b) is further dehydrated by means of a carboxylic acid (VI) so as to form a carboxylic acid anhydride (VII) and the carboxylic acid (II).

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Номер записи: 2
17-11-2005 дата публикации

Method and device for producing formates and the use thereof

Номер: US20050256338A1
Автор: Christoph Adami, Jorn Karl, Alexander Hauk, Ralf Bohling, Jorg Pastre, Robert Lenz
Принадлежит: BASF AKTIENGESELLSCHAFT

A process for preparing acid formates which comprises (a) partially hydrolyzing methyl formates with water; (b) separating off by distillation methyl formate and methanol from the reaction mixture obtained in process stage (a), forming a stream comprising formic acid and water; and (c) combining the stream comprising formic acid and water from the process stage (b) and the corresponding formate, forming a mixture comprising the acid formate and water, an apparatus for their preparation and their use.

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Номер записи: 3
03-11-2005 дата публикации

Method and device for producing formic acid formates and use of said formates

Номер: US20050245765A1
Автор: Christoph Adami, Jorn Karl, Alexander Hauk, Ralf Bohling, Jorg Pastre, Robet Lenz
Принадлежит: BASF Aktiengesellschaft

The invention relates to a method for producing formic acid formates, whereby (a) formic acid methyl ester is partially hydrolysed with water; (b) formic acid methyl ester and methanol are separated by distillation from the reaction mixture obtained in step (a), forming a current containing formic acid and water; (c) the current obtained in step (b), containing the formic acid methyl ester and optionally methanol, is converted into a current containing formate and water, by (i) reaction with a basic compound having a pKa value of the corresponding acid of the corresponding dissociation step of=3, measured at 25° C. in an aqueous solution, in the presence of water, and (ii) separation by distillation of the methanol; and (d) the current obtained in step (b), containing formic acid and water, and the current obtained in step (c), containing formate and water, are combined to form a mixture containing the formic acid formate and water. The invention also relates in a device for producing said ...

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Номер записи: 4
06-11-2008 дата публикации

Method for Producing (Poly-C2-C4 Alkylene Glycol)-Mono(Meth)Acrylic Esters

Номер: US20080275166A1
Автор: Stefan Becker, Jorg Pastre, Joachim Pakusch, Thomas Gotz, Arnold Burek, Wolfgang Hansch, Stefanie Spilger
Принадлежит: BASF Akiengesellschaft

The present invention relates to a process for the preparation of poly-C2-C4-alkylene glycol monoacrylic acid esters and monomethacrylic acid esters, and a process for the preparation of copolymers of such poly-C2-C4-alkylene glycol mono(meth)acrylic acid esters with acrylic acid or methacrylic acid and the use of the polymers as a plasticizing additive in cement-containing preparations. The preparation of the poly-C2-C4-alkylene glycol monoacrylic acid esters and monomethacrylic acid esters is effected by reacting acrylic anhydride or methacrylic anhydride ((meth)acrylic anhydride A below) with a poly-C2-C4-alkylene glycol compound P carrying at least one OH group in the presence of a base, the base being selected from basic compounds which have a solubility in the poly-C2-C4-alkylene glycol compound P of not more than 10 g/l at 90° C., and the molar ratio of (meth)acrylic anhydride A to compound P (molar ratio A:P) being in the range from 1:1 to 1.095:1, preferably in the range from 1.005 ...

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Номер записи: 5
05-02-2009 дата публикации

CLOSED REVERSIBLE BREATHING APPARATUS HAVING A METAL ORGANIC FRAMEWORK

Номер: US20090032023A1
Автор: Jorg Pastre, Ulrich Muller, Markus Schubert, Christoph Kiener, Friedhelm Teich, Frank Poplow
Принадлежит: BASF SE

The present invention relates to methods for removing carbon dioxide and, if appropriate, water from breathing air in closed or partially closed systems using a porous metal-organic framework material, such systems having at least one breathing apparatus and also their use and methods for regenerating the porous metal-organic framework material.

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Номер записи: 6