Flexible method for the joint production of (i) formic acid,...

Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C562S607000, C562S893000

Reexamination Certificate

active

10532561

ABSTRACT:
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).

REFERENCES:
patent: 3328439 (1967-06-01), Hamilton
patent: 4002678 (1977-01-01), Naglieri et al.
patent: 4239698 (1980-12-01), Isshiki et al.
patent: 4333885 (1982-06-01), Feitler
patent: 4374070 (1983-02-01), Larkins et al.
patent: 4430273 (1984-02-01), Erpenbach et al.
patent: 4519956 (1985-05-01), Lin et al.
patent: 4559183 (1985-12-01), Hewlett
patent: 4830789 (1989-05-01), Hinenoya et al.
patent: 4959498 (1990-09-01), Luft et al.
patent: 5003104 (1991-03-01), Paulik et al.
patent: 6992212 (2006-01-01), Zehner et al.
patent: 2002/0161260 (2002-10-01), Schmitt et al.
patent: 27 10 630 (1977-03-01), None
patent: 28 36 084 (1978-08-01), None
patent: 28 44 371 (1978-10-01), None
patent: 35 06 632 (1985-02-01), None
patent: 35 10035 (1985-03-01), None
patent: 3644222 (1987-12-01), None
patent: 0 004 641 (1979-03-01), None
patent: 0 087 870 (1983-07-01), None
patent: A-0 193 799 (1986-09-01), None
patent: 196520 (1986-10-01), None
patent: A-0 196 520 (1986-10-01), None
patent: 0 231 689 (1987-08-01), None
patent: 0 336 216 (1989-03-01), None
patent: 0 479 463 (1992-04-01), None
patent: 0677 505 (1995-10-01), None
patent: 1 231 201 (2002-01-01), None
patent: 24 41 502 (1974-08-01), None
patent: 2 333 773 (1999-08-01), None
patent: 2135-445 (1985-12-01), None
patent: 09124544 (1995-10-01), None
patent: 1432048 (1986-06-01), None
patent: 1432048 (1988-06-01), None
patent: WO 82/01704 (1982-05-01), None
patent: WO 95/32940 (1995-12-01), None
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Formic Acid”.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Carboxylic Acids, Aliphatic”.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Esters, Organic”.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Acetic Acid”.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Acetic Anhydride and Mixed Fatty Acid Anhydrides”.
Cd Römpp Chemie Lexikon- Version 1.0, Stuttgart/ NY: George Thieme Verlag 1995 “Säuereanhydride”.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, 2000 Electronic Release “Formic Acid”- Dervatives.
Ullmann's Encyclopedia of Industrial Chemistry 6thEdition, “Esters Organic”.
Marr et al., The Carbonylation of Methylacetate to Acetic Anhydride Catalysed by [Cp*Rh(CO)2]in the Absence of Hydrogen; Inorganic Chemistry Communications 3 (2000) pp. 617-619.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Flexible method for the joint production of (i) formic acid,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Flexible method for the joint production of (i) formic acid,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Flexible method for the joint production of (i) formic acid,... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3872344

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.