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: A substrate having about 0.5 wt % to about 25 wt % gum incorporated upon it is provided that provides the benefit of delayed viscosity when incorporated into a person care composition such as a toothpaste. Also disclosed is a method for forming gum incorporated onto or into a substrate comprising the steps of: providing a substrate; introducing a liquefied solution of gum to the substrate; and optionally drying the gum-treated substrate to form a dried gum-treated substrate. The invention further includes a dentifrice comprising a gum-treated substrate, and one or more ingredients selected from the group consisting of humectants, abrasives, thickening agents, binders, stabilizing agents, antibacterial agents, fluorides, sweeteners, and surfactants.

Abstract: An abrasive, amorphous precipitated silica is provided that provides excellent abrasive performance, but also has a relatively high degree of transmittance, and an index of refraction that is sufficiently low to allow it to be a component of a transparent toothpaste composition having a relatively high concentration of water. The amorphous precipitated silica composition has a refractive index of less than about 1.4387, a light transmittance of greater than about 48%; and a Brass Einlehner abrasion value of greater than about 5 mg loss/100,000 rev. A dentifrice having a haze value of less than about 70 may be prepared using this abrasive, amorphous silica.

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 transparent dentifrice is provided that has excellent abrasive performance. The dentifrice comprises from about 10 wt % to about 13 wt % water, and an abrasive, low-structure, precipitated silica having: a refractive index of from about 1.439 to 1.450, an oil absorption of from about 90 ml/100 g to about 120 ml/100 g, a light transmittance of greater than about 60%; and a Brass Einlehner abrasion value of less than about 5 mg loss/100,000 rev. Additionally the dentifrice has: a haze value of less than about 50; an RDA of about 50 to 200; and a refractive index of from about 1.439 to 1.450.

Abstract: A substrate having about 0.5 wt % to about 25 wt % gum incorporated upon it is provided that provides the benefit of delayed viscosity when incorporated into a person care composition such as a toothpaste. Also disclosed is a method for forming gum incorporated onto or into a substrate comprising the steps of: providing a substrate; introducing a liquefied solution of gum to the substrate; and optionally drying the gum-treated substrate to form a dried gum-treated substrate. The invention further includes a dentifrice comprising a gum-treated substrate, and one or more ingredients selected from the group consisting of humectants, abrasives, thickening agents, binders, stabilizing agents, antibacterial agents, fluorides, sweeteners, and surfactants.

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: Calcium phosphate colorants are provided that comprise calcium phosphate particles, a dye, and aluminum hydroxide and which are resistant to dye migration and suitable for use in food, drugs and cosmetics. The calcium phosphate particles are coated with a dye and the dye is fixed to the particles by the aluminum hydroxide. Also provided is a method for making a calcium phosphate colorant in which aluminum hydroxide is mixed with a calcium phosphate slurry to deposit aluminum hydroxide onto the calcium phosphate particles contained within the slurry.

Abstract: An abrasive, amorphous precipitated silica is provided that provides excellent abrasive performance, but also has a relatively high degree of transmittance, and an index of refraction that is sufficiently low to allow it to be a component of a transparent toothpaste composition having a relatively high concentration of water. The amorphous precipitated silica composition has a refractive index of less than about 1.4387, a light transmittance of greater than about 48%; and a Brass Einlehner abrasion value of greater than about 5 mg loss/100,000 rev. A dentifrice having a haze value of less than about 70 may be prepared using this abrasive, amorphous silica.

Abstract: An abrasive precipitated silica is provided that provides excellent abrasive performance and good viscosity build, but also has a relatively high degree of transmittance, and an index of refraction that is sufficiently low to allow it to be a component of a transparent toothpaste composition having a relatively high concentration of water. The amorphous precipitated silica composition has a refractive index of from about 1.439 to 1.450, a light transmittance of greater than about 60%, and a Brass Einlehner abrasion value of less than about 5 mg loss/100,000 rev.

Abstract: A transparent dentifrice is provided that has excellent abrasive performance. The dentifrice comprises from about 10 wt % to about 13 wt % water, and an abrasive, low-structure, precipitated silica having: a refractive index of from about 1.439 to 1.450, an oil absorption of from about 90 ml/100 g to about 120 ml/100 g, a light transmittance of greater than about 60%; and a Brass Einlehner abrasion value of less than about 5 mg loss/100,000 rev. Additionally the dentifrice has: a haze value of less than about 50; an RDA of about 50 to 200; and a refractive index of from about 1.439 to 1.450.

Abstract: Calcium phosphate colorants are provided that comprise calcium phosphate particles, a dye, and aluminum hydroxide and which are resistant to dye migration and suitable for use in food, drugs and cosmetics. The calcium phosphate particles are coated with a dye and the dye is fixed to the particles by the aluminum hydroxide. Also provided is a method for making a calcium phosphate colorant in which aluminum hydroxide is mixed with a calcium phosphate slurry to deposit aluminum hydroxide onto the calcium phosphate particles contained within the slurry.

Abstract: There is provided a method of adhering dye to a silica. The method comprises providing a silica slurry which includes a plurality of silica particles, depositing alum in the pores of the silica particles, reacting a base with the alum to convert the alum into aluminum hydroxide resulting in treated silica particles. The treated silica particles are then filtered and washed. Thereafter, a dye is mixed with the treated silica particles. The resultant dyed silica product is resistant to dye migration.

Abstract: A dentifrice containing a dye absorbing silica which imparts a speckled appearance in toothpaste or gel formulations. The dye absorbing silica comprises silica granules which have a linseed oil absorption of at least about 150 cc/100 g, an average particle size of about 400 .mu.m to about 600 .mu.m, an attrition value of less than 30%, and a pH of about 6 to about 8.

Abstract: Plastic compositions which contain zeolite particles as fillers which have particle sizes of no more than 2.2 microns in diameter with at least 90 percent of the weight of the particles being between 0.1 and 5.0 microns in diameter.

Abstract: The filtration of zeolites, for example sodium alumino silicates, from aqueous slurries containing the zeolites is improved by washing the filter cake with an aqueous solution of any salt which has the capacity to produce a stabilized slurry of the zeolite. Suitable salts include alkali metal carbonates, bicarbonates, sulphates and salts of organic acids.

Abstract: Rubber compositions which contain zeolite particles having particle sizes of no more than 1.6 microns in diameter with at least 90% of the weight of the particles being between 0.1 and 3.2 microns in diameter, a binding agent, water, and a solubilizing agent.

Abstract: Rubber compositions which contain zeolite particles as fillers which have particle sizes of no more than 2.2 microns in diameter with at least 90 percent of the weight of the particles being between 0.1 and 5.0 microns in diameter.

Abstract: Sodium silicate solutions are prepared by dissolving sand in sodium hydroxide solution at a pressure of at least 100 psig and at a temperature of at least 130.degree. C. to produce a sodium silicate solution having a silica to sodium oxide molar ratio of between 2.4:1 and 2.8:1, and activating said sodium silicate solution by reaction with from about 50 to 200 ppm of alumina.