Patent ID: 11873461
Assignee: AFTON CHEMICAL CORPORATION
Field: Basic materials chemistry (Chemistry)
Classification: CPC C | IPC C

Claim 0:
1. A sulfurized polyolefin oligomer made by a process comprising the steps of:
(a) reacting a C2 to C18 olefin with a sulfur halide to form an intermediate sulfurized olefin reaction product;
(b) reacting the intermediate sulfurized olefin reaction product with an alkali metal hydrosulfide, an alkali metal hydroxide, and sulfur in an aqueous solution to form a sulfurized polyolefin reaction product;
(c) treating the sulfurized polyolefin reaction product with an aqueous alkaline solution for a time and a temperature effective to form the sulfurized polyolefin oligomer; and
wherein the aqueous alkaline solution is about 40 to about 60 weight percent of an alkali metal hydroxide and being free of alcohols or ketones.