Edwin Cooper & Company Limited

David R Woods

Gerald John Jayne

Joseph P O'Brien

Lubricant additives having antioxidant and antiwear properties are made by reacting an oolefin such as dicyclopentadiene with sulfur and a mercaptan.

Lubricant additive

Lubricating oils having improved antioxidant and antiwear properties are obtained by adding a minor amount of a reaction product made by reacting an olefinic hydrocarbon containing about 6-18 carbon atoms and about 1-3 olefinic double bonds concurrently with sulfur and hydrogen sulfide to obtain a reaction intermediate and reacting this intermediate with additional olefin hydrocarbon which may be the same or different. Preferred olefinic hydrocarbons are dicyclopentadiene and alloocimene.

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Tavin Oranmore, Ireland

David R Woods