Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2008-04-01
2008-04-01
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
Reexamination Certificate
active
07351860
ABSTRACT:
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 pKavalue of the corresponding acid of the corresponding dissociation step of =3, measured at 25° C. in an aqueous solution, in 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 to a device for producing said formic acid formates and to the use of the same.
REFERENCES:
patent: 2545889 (1951-03-01), MacLean
patent: 3983010 (1976-09-01), Rauch et al.
patent: 4218568 (1980-08-01), Hohenschutz et al.
patent: 4261755 (1981-04-01), Berry et al.
patent: 4326073 (1982-04-01), Wolf et al.
patent: 2003/0092939 (2003-05-01), Strofer et al.
patent: 24 07 157 (1975-09-01), None
patent: 26 53 448 (1977-07-01), None
patent: 101 54 757 (2003-05-01), None
patent: 102 10 730 (2003-09-01), None
patent: 0 017 866 (1980-10-01), None
patent: WO-96/35337 (1996-11-01), None
patent: WO-96/35657 (1996-11-01), None
patent: WO-97/05783 (1997-02-01), None
patent: WO-99/12435 (1999-03-01), None
patent: WO-00/08929 (2000-02-01), None
patent: WO-01/19207 (2001-03-01), None
Bibliothek Gmelins Handbuch der anorganischen Chemie. Achte Vollig neu Bearbeitete Auflage. NATRIUM Mit 75 Figuren. System-Nummer 21. (1928) pp. 816-819.
Haupibucherei Gmelins Handbuch der anorganischen Chemie. 8. Auflage. Herausegeben von der Deutschen Chemischen Gesellschaft. System-Nummer 22: Kalium. Lieferung 3. Verbindungen bis Kalium und Tellur. (1937) pp. 919-921.
Deutsches Reich Reichspatentamt Patentschrift. Firma Rudolph Koepp & Co. in Oestrich i. Rhg. und Dr. Egon Elod in Karlsruhe i.B. Verfahren zur Herstellung saurer Natriumformiate. Patentiert im Deutschen Reiche vom. 27. Juni 1923 ab.
The Journal of the American Chemical Society. vol. XLIII Jul.-Dec. 1921 pp. 1470-1481. Compound Formation and Solubility in Systems of the Type, Formic Acid: Metal Formate (by James Kendall and Howard Adler Feb. 25, 1921).
Ullmann's Encyclopedia of Industrial Chemistry, Sixth Edition, 2000 Electronic Release Formic Acid—Production (Werner Reutemann, Heinz Kieczka).
Adami Christoph
Böhling Ralf
Hauk Alexander
Karl Jörn
Lenz Robert
BASF - Aktiengesellschaft
Connolly Bove Lodge and Hutz
Zucker Paul A.
LandOfFree
Method and device for producing formic acid formates and use... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for producing formic acid formates and use..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for producing formic acid formates and use... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2800279