Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1984-05-08
1985-11-19
McCarthy, Helen M.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
428428, 430 5, 430296, 501 61, 501 62, 501 64, 501903, C03C 308
Patent
active
045542597
ABSTRACT:
Alkali-free borosilicate glass have been developed having coefficients of thermal expansion (+20.degree. C. to +200.degree. C.) below 40.5.times.10.sup.-7, densities less than 3.0 g/cm.sup.3 and good visible and UV transmission, and can be produced by conventional continuous melting techniques. These glasses are particularly suitable for photomask, photovoltaic and mirror substrate applications. Their compositions comprise, in weight percent:
REFERENCES:
patent: 3723354 (1973-03-01), Wada et al.
patent: 3728646 (1973-04-01), Zijustra
patent: 3794502 (1974-02-01), LaGrouw
patent: 4319215 (1982-03-01), Yamazaki et al.
patent: 4321317 (1982-03-01), MacIver
patent: 4391916 (1983-07-01), Nakagawa et al.
patent: 4411972 (1983-10-01), Narken et al.
patent: 4421593 (1983-12-01), Curtis et al.
patent: 4476216 (1984-10-01), Tobias
patent: 4501819 (1985-02-01), Yatsuda et al.
Izumitani, T. et al., "Surface Texture Problems of High Precision Glass Substrates for Photomasks", Hoya Optics, Menlo Park, Calif. (1976).
Franklin Brian
Mader Karl-Heinz
McCarthy Helen M.
Schott Glass Technologies Inc.
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