Evonik Operations Gmbh

The Procter Gamble Company

J.m. Huber Corporation

Evonik Degussa Gmbh

Terry William Nassivera

Karl William Gallis

William Jackson Hagar

Sanjeev Midha

Eva Schneiderman

Lawrence Edward Dolan

Eric Gustave Lundquist

Michael C Withiam

Patrick D McGill

David K Friday

Fitzgerald Alphanso Sinclair

John M Cornelius

Linda Mauller

Patrick McGill

Silica particles having a d50 median particle size from 8 to 20 μm, a sphericity factor (S) of at least 0.9, a BET surface area from 0.1 to 8 m/g, a total mercury intrusion pore volume from 0.35 to 0.8 cc/g, and a loss on ignition from 3 to 7 wt. %, are disclosed, as well as methods for making these silica particles, and dentifrice compositions containing the silica particles.

Spherical stannous compatible silica particles for reduced RDA

Silica particles having a BET surface area from 0.1 to 7 m/g, a pack density from 35 to 55 lb/ft, an Einlehner abrasion value from 8 to 25 mg lost/100,000 revolutions, a total mercury intrusion pore volume from 0.7 to 1.2 cc/g, and a stannous compatibility from 70 to 99%, are disclosed, as well as methods for making these silica particles.

Stannous compatible silica

Spherical silica and/or silicate particles having a d50 median particle size from 1 to 5 &#x3bc;m, a d95 particle size less than 8 &#x3bc;m, an oil absorption from 40 to 100 cc/100 g, a pack density from 20 to 60 lb/ft, and a sphericity factor (S) of at least 0.9, are disclosed, as well as methods for making these spherical particles, and dentifrice compositions containing the spherical particles.

Spherical silica for tubule occlusion

Dentifrice containing silica particles having a d50 median particle size from 4 to 25 &#x3bc;m, a BET surface area of less than 10 m/g, and a total mercury intrusion pore volume from 0.2 to 1.5 cc/g, are disclosed.

Dentifrice formulations having spherical stannous compatible silica particles for reduced RDA

Silica particles having a d50 median particle size of at least 6 &#x3bc;m, a ratio of (d90&#x2212;d10)/d50 from 1.1 to 2.4, a RDA at 20 wt. % loading from 40 to 200, and a sphericity factor (S80) of at least 0.9, are disclosed, as well as methods for making these silica particles, and dentifrice compositions containing the silica particles.

Spherical silica particle size for RDA control

Oral compositions containing a carrier, a cationic antimicrobial compound, and a silica and/or silicate material are disclosed. These compositions can provide a controlled release of the antimicrobial compound.

Silica-based antimicrobial oral compositions

A dentifrice composition containing an abrasive and a stannous ion source. The abrasive can contain precipitated silica particles where the extractable stannous ions after 30 days at 40&#xb0; C. is greater than about 75% of the initial extractable stannous ion concentration.

Dentifice compositions containing stannous compatible silica particles

Color-bleed resistant pigment particles containing an anionic dye, a quaternary ammonium compound, and a silica and/or silicate material having a negative zeta potential are disclosed. Related methods of making these colored pigment particles also are provided.

Color-bleed resistant silica and silicate pigments and methods of making same

Treated silica materials are disclosed, together with methods of making such materials and dentifrice compositions comprising the treated silica materials.

Treated silicas and metal silicates for improved cleaning in dentifrice

A filtration system including a novel combination of at least one metal-doped silica-based gel and zeolite materials to trap and/or modify, and remove undesirable gases (such as ammonia, ethylene oxide, formaldehyde, and nitrous oxide, as examples) from an enclosed environment is provided. The gel component exhibits specific porosity requirements and density measurements; the zeolite component is generally acidic and is preferably not reacted with any salts or like substances. Also included is the presence of an oxidizing agent on the gel materials to aid in capturing nitrogen dioxide and preventing conversion of such a product to NO. Methods of using and the application within specific filter apparatuses are also encompassed within this invention.

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Gambrills, MD, United States of America

Terry William Nassivera