Additive composition for making dental materials

Details Additive composition for making dental materials Additive composition for making dental materials

1976-06-23

1980-10-14

Lovering, Richard D.

Compositions: coating or plastic

Materials or ingredients

Ceramic fluxes

252313R, 252313S, C09K 300, B01J 1300

Patent

active

042279372

ABSTRACT:
Addition of ammonium stabilized colloidal silica, borax and boric acid to the distilled water in which dental porcelain is fired greatly increases the firing range by reducing "balling" or edge rounding, and flow deformation. Greatly increased machinability and indefinitely prolonged green-biscuit strength is also obtained by the use of the present additive without deleterious effects on the porcelain.

REFERENCES:
patent: 2630410 (1953-03-01), Clapsadle et al.
patent: 2978349 (1961-04-01), Walsh et al.
patent: 3007878 (1961-11-01), Alexander et al.
patent: 3012973 (1961-12-01), Atkins

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