Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1974-02-04
1976-11-02
Douglas, Winston A.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
351 62, 106 47R, C03C 300
Patent
active
039895327
ABSTRACT:
An optical article, for example, a lens, window or mirror, at least part of the surface of which, and preferably the whole of which, is an inorganic oxide glass having a P.sub.2 O.sub.5 content of at least 52 mole %, and preferably 55 to 68.5 mole %, an alkaline earth content of 2.7 to 20 mole %, and a transformation temperature of not greater than 300.degree. C, the glass optionally containing B.sub.2 O.sub.3 and at least one alkali metal oxide.
REFERENCES:
patent: 1961603 (1934-06-01), Berger
patent: 2390191 (1945-12-01), Stanworth
patent: 2920972 (1960-01-01), Godron
patent: 3220861 (1965-11-01), Parry et al.
patent: 3310411 (1967-03-01), Vedder et al.
Lewis Cyril John
Ray Neil Hunter
Robinson William Derek
Douglas Winston A.
Imperial Chemical Industries Limited
Neibling John F.
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