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AssigneeCovestro LLC
InventorsJenna L. Caputo, Mark A. Christman, II, Charles D. Starkey, Daniel R. Wagner, Nigel Barksby
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Methods of removing amine contaminants from equipment used in the production of polyether polyols. These methods include: (a) contacting the equipment with an aqueous solution of a first acid; (b) discharging the aqueous solution of the first acid from the equipment; (c) contacting the equipment with an aqueous solution of an acidic metal conditioner; (d) discharging the aqueous solution of the acidic metal conditioner from the equipment; (e) contacting the equipment with an aqueous solution of an alkali metal hydroxide; and (f) discharging the aqueous solution of the alkali metal hydroxide from the equipment.
A method of removing amine contaminants from equipment used in the production of polyether polyols, comprising:
Dependencies are inferred from the claim text.