EP 0447092 B1 19940727 - Method of producing food grade quality white mineral oil.
Title (en)
Method of producing food grade quality white mineral oil.
Title (de)
Verfahren zur Herstellung von Mineral-Weissöl mit Nahrungsmittelqualität.
Title (fr)
Méthode de préparation d'huile minérale blanche de qualité alimentaire.
Publication
Application
Priority
US 49151190 A 19900312
Abstract (en)
[origin: EP0447092A1] The production of food grade quality white mineral oils from predominantly naphthenic or cycloparaffinic crude distillates heretofore have required acid treating using sulfuric acid followed by neutralization, water wash and possibly finishing step. Herein, however, three stages of hydroprocessing without any solvent extraction or acid treatment prior step are employed to produce the desired food grade quality white mineral oil having a trace of aromatic constituents therewithin. Specific steps are defined in the application in terms of the severity of the hydrogenation in the hydrotreating operation at each respective step; as well as the steps of separating gaseous constituents of the hydroprocessing product.
IPC 1-7
IPC 8 full level
C07B 61/00 (2006.01); B01J 23/88 (2006.01); C10G 45/44 (2006.01); C10G 45/50 (2006.01); C10G 45/52 (2006.01); C10G 65/08 (2006.01)
CPC (source: EP)
C10G 65/08 (2013.01); C10G 2400/14 (2013.01)
Citation (examination)
Hawley's Chemical Dictionary, 11th Edition, Van Nostrand Reinhold Company, (1987), page 616
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0447092 A1 19910918; EP 0447092 B1 19940727; AT E109199 T1 19940815; BR 9100974 A 19911105; CS 64491 A3 19920318; CZ 279524 B6 19950517; DE 447092 T1 19920227; DE 69103049 D1 19940901; DE 69103049 T2 19941117; ES 2025542 T1 19920401; GR 910300140 T1 19920630; HU 208615 B 19931228; HU 910783 D0 19910930; HU T59573 A 19920629; JP 3062701 B2 20000712; JP H04220492 A 19920811
DOCDB simple family (application)
EP 91301780 A 19910304; AT 91301780 T 19910304; BR 9100974 A 19910312; CS 64491 A 19910312; DE 69103049 T 19910304; DE 91301780 T 19910304; ES 91301780 T 19910304; GR 910300140 T 19920630; HU 78391 A 19910311; JP 6936991 A 19910311