Durable glass elements

Details Durable glass elements Durable glass elements

1981-03-19

1983-01-11

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65 211, 501 34, 501 38, 501 51, 501 58, 501 65, 501 77, 501 79, 501901, 501903, 501 66, 501 67, 501 59, C03C 308, G02B 528

Patent

active

043679196

ABSTRACT:
Glass microspheres and other glass elements based on B.sub.2 O.sub.3, BaO, SiO.sub.2 and TiO.sub.2 have an improved combination of crushing strength, index of refraction, and, especially in some formulations, chemical resistance. The microspheres are especially adapted for use as retroreflective elements in pavement markings.

REFERENCES:
patent: Re26217 (1967-06-01), Rindone
patent: 2939797 (1960-06-01), Rindone
patent: 2992122 (1961-07-01), Beck
patent: 3193401 (1965-07-01), Alexander et al.
patent: 3195030 (1965-07-01), Herczog et al.
patent: 3251704 (1966-05-01), Nellessen
patent: 3294558 (1966-12-01), Searight et al.
patent: 3294559 (1966-12-01), Searight et al.
patent: 3468681 (1969-09-01), Jaupain
patent: 3563771 (1971-02-01), Tung

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