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2 028 980

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(51)

IPC

(21) (22)

Application

5064553/33, 1992-07-13

(22)

Actual filing date

1992-07-13

(45)

Published

1995-02-20

(72)

Inventor

Syritskij A.P.Kishmishjan A.A.Romanovskij M.B.Pojurovskaja I.Ja.Bujanova T.P.Egorova A.K.Antonova S.L.

(73)

Holder

Syritskij Aleksej Petrovich

GLASS FOR FILLERS OF COMPOSITION STOMATOLOGICAL MATERIALS MAINLY Russian patent published in 1995 - IPC

Abstract RU 2028980 C1

FIELD: material for stomatology. SUBSTANCE: glass containing SiO₂, Al₂O₃, BaO and B₂O₃ has the following composition, wt.-%: aluminium oxide (Al₂O₃) 12-30; barium oxide (BaO) 7-27.5; boron oxide (B₂O₃) 1-9; cobalt oxide (CoO) 0.0001-0.0003; nickel oxide (NiO) 0.001-0.003; neodymium oxide (Nd₂O₃) 0.003-0.03; erbium oxide (Er₂O₃) 0.0004-0.007, and silicon oxide (SiO₂) - the rest. X-ray contrast of glass at is 340-370, transparence is 80-90%. EFFECT: enhanced quality of glass. 1 tbl

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Authors

Syritskij A.P.

Kishmishjan A.A.

Romanovskij M.B.

Pojurovskaja I.Ja.

Bujanova T.P.

Egorova A.K.

Antonova S.L.

Dates

1995-02-20—Published

1992-07-13—Filed