Method for retarding darkening of a dispersant-antioxidant...

Details Method for retarding darkening of a dispersant-antioxidant... Method for retarding darkening of a dispersant-antioxidant...

C - Chemistry, Metallurgy

08

K

C08K 5/16 (2006.01) C08F 8/00 (2006.01) C08L 51/06 (2006.01) C10M 133/52 (2006.01) C10M 145/16 (2006.01) C10M 149/06 (2006.01) C10M 149/10 (2006.01)

Patent

CA 2057272

METHOD FOR RETARDING DARKENING OF A DISPERSANT-ANTIOXIDANT OLEFIN COPOLYMER (D#79, 296-F) ABSTRACT OF THE INVENTION A method of retarding the darkening effect of a unreacted, excess antioxidant amine in a DAOCP comprising: (a) reacting an organic compound with a finished DAOCP containing an unreacted excess antioxidant amine to form therewith an adduct product; and (b) recovering the DAOCP containing the formed adduct product, whereby the darkening of the DAOCP is retarded. VAM79296.PA 3/91

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