Antiblurring glass

Details Antiblurring glass Antiblurring glass

1980-07-07

1981-12-15

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

2523014P, 501 79, 501905, C03C 316

Patent

active

043057578

ABSTRACT:
A glass for use as an optical glass having an anti-blurring property, water resistance and hardness and decreased liquidus temperature, said glass consisting essentially of, in mol. %, 47 to 65% P.sub.2 O.sub.5, 0.5 to 12% SiO.sub.2, 0.5 to 10% B.sub.2 O.sub.3, 6 to 15% SiO.sub.2 +B.sub.2 O.sub.3, 0 to 30% alkali metal oxide, 5 to 35% alkaline earth metal oxide, 20 to 45% alkali metal oxide+alkaline earth metal oxide, 0 to 5% Al.sub.2 O.sub.3, 0 to 10% ZnO, and no PbO. Oxides of Ce, Nd and Er may also be present.

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patent: 3926649 (1975-12-01), Ray et al.
patent: 3935018 (1976-01-01), Ray et al.
patent: 3979322 (1976-09-01), Alexeev et al.
patent: 3989532 (1976-11-01), Ray et al.
patent: 4022707 (1977-05-01), Deutschbein et al.
patent: 4026714 (1977-05-01), Lewis
patent: 4248732 (1981-02-01), Myers et al.

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