SINGLE-PHASE TEETH WHITENING AGENT WITH METAPHOSPHATE ABRASIVE OF HIGH DEGREE OF PURITY Russian patent published in 2020 - IPC A61K8/19 A61K8/22 A61K8/23 A61K8/24 A61K8/46 A61K8/86 A61Q11/00 

FIELD: hygiene.

SUBSTANCE: group of inventions refers to an oral care composition containing a metaphosphate abrasive, and a method for preparing it. Disclosed single-phase composition for oral care comprises: bleaching agent, wherein the bleaching agent is a solid peroxide bleaching agent; abrasive, which is sodium metaphosphate; anti-calculus agent, which is pyrophosphate; substantially anhydrous carrier containing a copolymer of ethylene oxide and propylene oxide, where the carrier is characterized by a total water content of less than 4 wt %. Composition does not contain calcium pyrophosphate. Method for preparing the single-phase oral care composition involves mixing the above components: a bleaching agent, an abrasive, an anti-calculus preparation and a substantially anhydrous carrier to form a composition.

EFFECT: use of abrasive, which is sodium metaphosphate, in bleaching composition of said composition provides improved stability of oxidising agent and the possibility of using the composition in form of a single phase in one chamber or tube for delivering sufficient amounts of the bleaching ingredient and other active substances for oral care without a side reaction between the ingredients.

7 cl, 4 tbl, 2 ex