C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 7/20 (2006.01) C07C 29/94 (2006.01) C07C 41/46 (2006.01) C07C 45/90 (2006.01) C07C 253/32 (2006.01) C07C 255/03 (2006.01) C07D 207/267 (2006.01) C07D 307/48 (2006.01) C07D 333/48 (2006.01) C09K 15/14 (2006.01)
Patent
CA 2047299
A-18160/A/CGC 1495 PREVENTION OF OXIDATION IN PETROCHEMICAL EXTRACTION SOLVENTS Abstract of the Disclosure A wide variety of hindered phenolic compounds are effective as antioxidant stabilizers to prevent the oxidation of liquid hydrocarbons and of oxygenated compounds, such as sulfolane or tetraethylene glycol, used as extraction solvents in the petroleum industry.
Gatechair Leslie R.
Hyun James L.
Ag Ciba-Geigy
Fetherstonhaugh & Co.
Gatechair Leslie R.
Hyun James L.
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