Strengthening sheet glass by ion exchange

Details Strengthening sheet glass by ion exchange Strengthening sheet glass by ion exchange

1974-06-11

1976-01-06

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

427431, C03C 2100

Patent

active

039308200

ABSTRACT:
By the addition of a small quantity of potassium chloride or arsenous sulfide to commercial grades of molten potassium nitrate, the potassium nitrate may be activated or purified sufficiently to produce strengthened glass by ion exchange equal to glass strengthened by use of highly purified laboratory reagent grades of potassium nitrate.

REFERENCES:
patent: 3415637 (1968-12-01), Glynn
patent: 3441398 (1969-04-01), Hess
patent: 3627491 (1971-12-01), Boffe et al.
patent: 3650720 (1972-03-01), Grego et al.
patent: 3791809 (1974-02-01), Lau

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