Abstract: Disclosed herein are architectural coating compositions comprising spheroid shaped silica or silicate. The compositions exhibit a number of improved properties and are useful on a variety of substrates.

Abstract: Disclosed herein are silica materials comprising an adduct on at least a portion of a surface thereof. The silica materials are capable of binding volatile sulfur compounds (VSC)s and thereby reducing oral malodor. Also disclosed are dentifrice compositions, oral care compositions comprising the silica materials, and methods of making and using the silica materials.

Abstract: Disclosed herein is a continuous process for preparing a silica product, comprising: (a) continuously feeding an acidulating agent and an alkali metal silicate into a loop reaction zone comprising a stream of liquid medium; wherein at least a portion of the acidulating agent and the alkali metal silicate react to form a silica product in the liquid medium of the loop reaction zone; (b) continuously recirculating the liquid medium through the loop reaction zone; and (c) continuously discharging from the loop reaction zone a portion of the liquid medium comprising the silica product. Silica products and dentifrice compositions comprising the silica products are also disclosed. A continuous loop reactor is also disclosed.

Abstract: Novel mouth rinse (i.e., mouthwash) compositions that permit delivery of silica or silicate materials to the surface of teeth through common mouth rinsing procedures are provided. Such compositions must exhibit proper suspension of the silica or silicate materials (in particulate form) to prevent settling during storage while simultaneously providing proper mouth rinsing properties. Such silica or silicate materials may themselves exhibit any number of therapeutic or aesthetic benefits as long as such materials are easily transferred through mouth rinsing and exhibit proper affinity for deposit on target teeth upon contact therewith. Such silica or silicate materials should exhibit, in one embodiment, certain ionic charge levels as well as sufficiently small particle sizes to permit effective static attraction and eventual accumulation on target tooth surfaces.

Abstract: Precipitated silica materials are provided for utilization as abrasives or thickeners within dentifrice formulations that simultaneously effectuate tubule blocking within tooth dentin to reduce dentin sensitivity. Such precipitated silica materials have sufficiently small particle sizes and exhibit certain ionic charge levels by, for example, adjusting the zeta potential properties of the precipitated silica materials through treatment with certain metals to permit effective static attraction and eventual accumulation within dentin tubules when applied to teeth from a dentifrice formulation.

Abstract: Precipitated silica comprising porous silica particles having a cumulative surface area for all pores having diameters greater than 500 ? of less than 8 m2/g, as measured by mercury intrusion, and a percentage cetylpyridinium chloride (% CPC) Compatibility of greater than about 55%. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the silica product are also provided.

Abstract: Precipitated silica product having low surface area and enhanced flavor compatibility. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the low surface area silica product are also provided.

Abstract: Precipitated silica comprising porous silica particles having a cumulative surface area for all pores having diameters greater than 500 Å of less than 8 m2/g, as measured by mercury intrusion, and a percentage cetylpyridinium chloride (% CPC) Compatibility of greater than about 55%. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the silica product are also provided.

Abstract: Precipitated silica product having low surface area and enhanced flavor compatibility. The precipitated silica product is especially well-adapted for use in dentifrices containing cetylpyridinium chloride, which do not attach to the low surface area silica product in a meaningful level and thus remain available for antimicrobial action. Processes for making the low surface area silica product are also provided.

Abstract: A method of preparing mesoporous silica from a reaction mixture comprising a mineral acid such as HCl, an inorganic oxide source such as tetraethoxysilane, a surfactant such as cetyltrimethlyammonium bromide and water. The reaction mixture is mixed, e.g., by stirring or sonication, until sufficiently polymerized that mesostructured silica may be formed by a subsequent heating step, as indicated by the reaction mixture becoming opaque. This mixing is typically performed at room temperature for about 30-70 minutes. Then, the reaction mixture is heated in a pressurized vessel at a time, temperature and pressure sufficient to form mesostructured silica, e.g., at 60 to 230° C. for 15 to 80 minutes. Finally, mesoporous silica is recovered by filtering, drying and calcining in a furnace having a temperature in the range of 400 to 600° C. in air for at least 6 hours.