Method for hydrating silicate glasses

Details Method for hydrating silicate glasses Method for hydrating silicate glasses

1977-08-08

1980-05-06

Lindsay, Jr., Robert L.

Glass manufacturing

Processes

With chemically reactive treatment of glass preform

106 74, 423334, C03C 2300

Patent

active

042015618

ABSTRACT:
The present invention is concerned with a single-step process for hydrating alkali metal-containing silicate glasses starting with such fine-dimensioned forms as powders, granules, flakes, fibers, and thin sheets. The process, which contemplates hydration temperatures higher than 225.degree. C. and relative humidities less than 50%, permits the precise control of the quantity of water taken into the glass structure and, where the water content in the glass is held within about 1-25% by weight, the hydrated product of the above-cited powders, granules, etc., can be thermoplastically formed into sound bulk articles. A layer of the anhydrous powders can be applied to a substrate and then hydrated in situ to form glassy paints and coatings.

REFERENCES:
patent: 1763845 (1930-06-01), Edgerton
patent: 2251515 (1941-08-01), Curll, Jr.
patent: 3498802 (1970-03-01), Bickford et al.
patent: 3782906 (1974-01-01), Pierce
patent: 3868227 (1975-02-01), Gericke et al.
patent: 3912481 (1975-10-01), Barthholomew et al.
patent: 4059425 (1977-11-01), Brydges et al.

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