| abstract |
This invention relates to novel and improved bleach-stable compositions and processes and methods of making such compositions. More particularly, the invention relates to providing improved dental compositions comprising an effective amount of a discontinuous phase consisting of one or more hydrophobic, inert, bleach-stable abrasive agents that are polymers, copolymers and crosspolymers of granular nature of about between 2 microns and 150 microns particle size, present in the operative range of about 10% and 75% with respect to the total weight of the composition, said abrasive agents are dispersed or otherwise distributed in a continuous phase comprising one or more bleaching actives emulsed in an inclusion complex polymer (ICP) of delayed water and saliva solubility said emulsified bleaching active being capable of forming a long lasting bleaching film on tooth surfaces and being present in the operative range of about 0.5% and 55% with respect to the total weight of the composition, said composition being stable for a long periods when contained in a single chamber, such as toothpaste tube, and the said emulsed bleaching active being activated only when extruded from the container and exposed to the salivary enzymes. The composition may contain other formulating agents. |