Sulphur-bridged phenolic antioxidants

C - Chemistry – Metallurgy – 07 – C

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C07C 323/20 (2006.01) C07G 99/00 (2009.01) C10L 1/24 (2006.01) C10M 105/16 (2006.01) C10M 129/14 (2006.01) C10M 135/30 (2006.01)

Patent

CA 2021225

Case EI-6004 SULFUR-BRIDGED PHENOLIC ANTIOXIDANTS Abstract A liquid, sulfur-bridged, hindered phenol antioxidant composition is prepared by reacting a mixture of hindered phenols with a sulfur chloride in the presence of a polar modifier. The composition is an effective antioxidant in lubricating oils without causing excessive copper corrosion.

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