Borosilicate glass having improved UV transmission, thermal and

Details Borosilicate glass having improved UV transmission, thermal and Borosilicate glass having improved UV transmission, thermal and

1994-11-02

1996-08-20

Bell, Mark L.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 56, 501 13, 501905, C03C 3091, C03C 311, C03C 400, C03C 408

Patent

active

055479049

ABSTRACT:
The borosilicate glass has a UV transmission of at least 80% at a UV wavelength of about 254 nm for a borosilicate glass sheet thickness of 2 mm, a linear coefficient of thermal expansion, .alpha..sub.20/300, of 3.2 to 3.4.times.10.sup.-6 K.sup.-1, a hydrolytic resistance of class 1 and a composition in % by weight based on oxide of

REFERENCES:
patent: 3994708 (1976-11-01), von Reth et al.
patent: 4792535 (1988-12-01), Fine
patent: 4870034 (1989-09-01), Kiefer
patent: 4925814 (1990-05-01), Fine
patent: 5045509 (1991-09-01), Kiefer

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