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US 5,670,258 AGranted
Treated fluoroaluminosilicate glass
AssigneeMinnesota Mining and Manufacturing Company
InventorsSumita B. Mitra, Scott R. Culler, Bing Wang
Life of this patent
Estimating the term…
Abstract
Fluoroaluminosilicate dental cement glasses are treated with an aqueous silanol treating solution and optionally with an additional organic compound. The treated glasses form cements with improved strength. The silanol can be ethylenically-unsaturated and can contain acidic groups, and, if so, is novel in its own right.
Claims19
A treated fluoroaluminosilicate glass comprising an acid-reactive arganofluoroaluminosilicate particulate glass having an ion-containing, siloxy-containing coating, made by the process comprising the steps of
- a) mixing finely-divided fluoroaluminosilicate glass with a non-neutral aqueous silanol solution, and
- b) drying the glass.
Dependencies are inferred from the claim text.