Process for the production of an optical glass article

Details Process for the production of an optical glass article Process for the production of an optical glass article

C - Chemistry, Metallurgy

03

B

49/77

C03B 20/00 (2006.01) C03B 37/016 (2006.01) C03C 23/00 (2006.01)

Patent

CA 1172045

TITLE OF THE INVENTION A process for the production of an optical glass article ABSTRACT OF THE DISCLOSURE The present invention relates to a process for the pro- duction of an optical glass article, which comprises immersing a gelled body containing a compound capable of being converted into a dopant for increasing the refractive index in a leach- ing liquor selected from the group consisting of water, aqueous solutions of weak acids, aqueous solutions of alkali metal salts, ketones and alcohols, leaching at least a part of the compound as ions out of the gelled body, optionally immer- sing in an organic solvent, drying in a predetermined atmos- phere, decomposing the compound, heating and firing at a high temperature and then heating and sintering at a higher tempe- rature.

385701

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