EP 1260573 A1 20021127 - Method for separating Coumafos from beeswax
Title (en)
Method for separating Coumafos from beeswax
Title (de)
Verfahren zur Abtrennung von Coumafos aus Bienenwachs
Title (fr)
Procédé d'élimination de Coumaphos de la cire d'abeille
Publication
Application
Priority
DE 10125431 A 20010525
Abstract (en)
Removal of coumafos (I) from beeswax, by adsorption on activated carbon and filtration under pressure, is carried out by: (i) melting the wax; (ii) adding 5 g of powdered activated carbon per litre of liquid wax; (iii) forming a homogeneous suspension; (iv) allowing the suspension to stand for a pre-determined contact time; and (v) filtering in a pressure filter at a pressure difference of the filter medium of at least 1 bar. Removal of coumafos (I) from beeswax, by adsorption on activated carbon and filtration under pressure, is carried out by: (i) melting the wax; (ii) adding at least 5 g of powdered activated carbon per litre of liquid wax; (iii) forming a homogeneous suspension; (iv) allowing the suspension to stand for a pre-determined contact time; and (v) filtering in a pressure filter at a pressure difference of the filter medium of at least 1 bar.
Abstract (de)
Es wird ein Verfahren zur Abtrennung von Coumafos (O,O'-Diethyl-O"-(3-chlor-4-methyl-7-cumarinyl)-thiophosphat) aus Bienenwachs durch Adsorption an Aktivkohle und anschließender Druckfiltration beschrieben.
IPC 1-7
C11B 11/00; B01D 15/00; C07B 63/00; C07C 7/12; C07C 27/26; C11B 3/10
IPC 8 full level
B01D 15/00 (2006.01); C07B 63/00 (2006.01); C07C 7/12 (2006.01); C07C 27/26 (2006.01); C11B 3/10 (2006.01); C11B 11/00 (2006.01)
CPC (source: EP US)
C11B 11/00 (2013.01 - EP US)
Citation (search report)
- [A] GB 671113 A 19520430 - NICHOLAS WEISER
- [A] GB 665157 A 19520116 - JOHN JAY NAUGLE
- [A] PATENT ABSTRACTS OF JAPAN vol. 1999, no. 08 30 June 1999 (1999-06-30)
- [A] S. ZIMMERMANN ET AL.: "Bestimmung von Brompropylat, 4,4'-Dibrombenzophenon, Coumaphos und Fluvalinat in Bienenwachs", DEUTSCHE LEBENSMITTEL-RUNDSCHAU, vol. 89, no. 11, 1993, STUTTGART, DE, pages 341 - 343, XP008006950
- [A] J. KOCHANSKY ET AL.: "Comparison of the transfer of coumaphos from beeswax into syrup and honey", APIDOLOGIE, vol. 32, no. 2, 2001, ARBEITSGEMEINSCHAFT DER INSTITUTE FUER BIENENFORSCHUNG, CELLE, DE, pages 119 - 125, XP008006961, ISSN: 0044-8435
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1260573 A1 20021127; EP 1260573 B1 20040922; AT E277152 T1 20041015; DE 10125431 A1 20021128; DE 50201067 D1 20041028; HU 0201750 D0 20020729; HU P0201750 A2 20021228; US 2002174803 A1 20021128; US 6586610 B2 20030701
DOCDB simple family (application)
EP 02010146 A 20020513; AT 02010146 T 20020513; DE 10125431 A 20010525; DE 50201067 T 20020513; HU P0201750 A 20020524; US 13528602 A 20020430