High refractive index glass composition

Details High refractive index glass composition High refractive index glass composition

1978-06-01

1979-02-27

Vertiz, O. R.

Compositions: coating or plastic

Coating or plastic compositions

Metal-depositing composition or substrate-sensitizing...

C03C 312, C03C 330

Patent

active

041417429

ABSTRACT:
Glass compositions having a refractive index of over 2.10 composed of the following metal oxides, in weight percent; 40.0 to 54.0% of TiO.sub.2, 24.0 to 44.0% of BaO, 5.0 to 15.0% of ZnO, 3.0 to 13.0% of ZrO.sub.2, 0.2 to 3.0% of CaO, 0.2 to 3.0% of MgO, 0.2 to 2.0% of SiO.sub.2, 0.1 to 0.5% of Na.sub.2 O and/or K.sub.2 O, and whose total weight exceeds 98.0% and moreover essentially without containing B.sub.2 O.sub.3.

REFERENCES:
patent: 2842446 (1958-07-01), Beck
patent: 2939797 (1960-06-01), Rindone
patent: 2980547 (1961-04-01), D'Adrian
patent: 3198641 (1965-08-01), Searight et al.
patent: 3294559 (1966-12-01), Searight et al.
patent: 3468681 (1969-09-01), Jaupain
patent: 3493403 (1970-02-01), Tung et al.

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