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US 6,607,752 B2Granted
Method for the anhydrous loading of nicotine onto ion exchange resins
AssigneeRohm and Haas Company
InventorsSimon Andrew Bellamy, Lyn Hughes
Life of this patent
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Abstract
An environmentally friendly method of loading nicotine onto cation exchange resins under anhydrous conditions is described. The method eliminates many of the processing problems that are associated with loading in aqueous media.
Claims20
A method for loading nicotine onto cation exchange resins under anhydrous conditions comprising the steps:
- a. preparing a nicotine/cation exchange resin solvent mixture by blending said nicotine and cation exchange resin and said solvent together at a pressure and temperature that maintains said solvent in the liquid state,
- b. maintaining said mixture, at a pressure and temperature that maintains said solvent in the liquid state, for 1 second to 48 hrs.,
- c. evaporating said solvent from said mixture to obtain a nicotine-loaded resin.
A method for preparing nicotine containing cation exchange resin comprising:
- loading said nicotine onto said cation exchange resin under anhydrous conditions.
Dependencies are inferred from the claim text.