Abrasive tool making process – material – or composition – With inorganic material – Clay – silica – or silicate
Patent
1979-05-23
1983-12-20
Derrington, James H.
Abrasive tool making process, material, or composition
With inorganic material
Clay, silica, or silicate
423339, 424 52, C04B 3116, C09C 168
Patent
active
044215274
ABSTRACT:
Novel precipitated silicon dioxide abrasive compositions which can be incorporated into therapeutic toothpaste compositions containing both soluble fluoride salts and soluble phosphate salts are disclosed. The abrasives comprise low structure precipitated silicon dioxides which have been reacted with about 10 to 300 parts per million alkaline earth metal ion, particularly calcium. Reaction with the alkaline earth metal ion minimizes abrasive interaction with the fluoride ion source in therapeutic toothpaste. Also provided are methods for preparation of the novel silicon dioxide abrasives and resulting toothpaste formulations containing such abrasives.
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Derrington James H.
Flanders Harold H.
Horn Alec H.
J. M. Huber Corporation
Price Robert L.
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