Treatment of glass

Details Treatment of glass Treatment of glass

1975-08-25

1977-05-17

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

65 30E, 65 60B, 427384, 427430B, C03C 1700

Patent

active

040239519

ABSTRACT:
A process for strengthening or toughening a phosphate glass the process comprising contacting the surface of the phosphate glass with a solution of a carboxylic acid in a liquid diluent, the carboxylic acid comprising an amino-carboxylic acid, or a hydroxy-carboxylic acid, or a mixture of an amino-carboxylic acid and a hydroxy-carboxylic acid. Particularly useful is an aqueous solution of an amino-polycarboxylic acid.

REFERENCES:
patent: 2662037 (1953-12-01), Levi
patent: 2943059 (1960-06-01), Beck et al.
patent: 3171768 (1965-03-01), Levengood
patent: 3259517 (1966-07-01), Atwell

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