Patent ID: 9675540
Date: 2017-06-13
CPC Classifications: A61K,A61P,A61Q

Claim:
1. A method of preparing a dentifrice comprising polymer matrix film with low solubility flavorant therein comprising the steps of: a) forming a polymer matrix film in the substantial absence of low solubility flavorant, wherein said polymer matrix comprises a water soluble polymer and a hydrophobic/lipophilic additive; b) forming a dentifrice base comprising a low solubility flavorant selected from the group consisting of menthol, spearmint oil, cinnamon oil, peppermint oil, clove oil, bay oil, thyme oil, cedar leaf oil, oil of nutmeg, oil of sage, and oil of bitter almonds; c) combining the polymer matrix film with the dentifrice base; and d) maintaining the combined polymer matrix film and dentifrice base for an amount of time suitable for an amount of low solubility flavorant to transfer from said dentifrice base to said polymer matrix film such that the concentration of the low solubility flavorant in the polymer matrix film is nearly equal to, equal to or greater than the concentration of the low solubility flavorant in the dentifrice base; wherein the ratio of water soluble polymer to the hydrophobic/lipophilic additive by weight in the film is from 10.7:1 to 9.3:1; and wherein the hydrophobic/lipophilic additive comprises silicone oil, and wherein the amount of hydrophobic/lipophilic additive in the polymer matrix film is about 7% by weight of the film, and wherein the amount of water soluble polymer is 65% to 75% by weight of the film; and wherein the dentifrice comprises the film in an amount of 1% by weight of the dentifrice.