Patent ID: 9072671
Filing Date: 2015-07-07
Classification: A61K,A61Q,B01D

Abstract:
1. A process for improving the taste of oral care raw materials using solvent extraction, said process comprising the sequential steps of: a) first providing a solid oral care raw material composition selected from metal salts, sodium saccharin, metal oxides, rheology modifiers, structurants, fillers, abrasives, inorganic phosphates, salt dyes, and mixtures thereof wherein said oral care raw material composition comprises and one or more undesirable non-polar materials selected from residual alcohols, alcohol ethoxylates, aldehydes, ethers, ketones, alkylamines, amides and esters; b) then contacting said oral care raw material composition with an extraction solvent to form an extraction mixture comprising a solid phase and a solvent phase; c) then separating the solid phase from the extraction mixture; and d) then incorporating the solid phase into an oral care composition; wherein the extraction solvent is selected from solvents having individual Hansen solubility parameters of a dispersion force component (δ D ) ranging from about 13 to about 19 (MPa) 0.5 , a polar component (δ P ) ranging from 0 to about 9 (MPa) 0.5 and a hydrogen bonding component (δ H ) ranging from 0 to about 11 (MPa) 0.5 .