Glass manufacturing – Processes – With chemically reactive treatment of glass preform
Patent
1977-09-01
1979-01-09
Fisher, Richard V.
Glass manufacturing
Processes
With chemically reactive treatment of glass preform
65 30R, 65 32, 65111, 65116, 65DIG14, 423333, 428410, 51307, C03C 1500, C03B 2100
Patent
active
041336658
ABSTRACT:
The present invention is concerned with the production of sodium and/or potassium hydrosilicate glass bodies. The basis of the invention resides in the hydration of anhydrous sodium and/or potassium silicate glass bodies in aqueous alcohol solutions to impart enhanced mechanical strength and thermoplastic properties thereto. The hydrating process, which permits close control to be maintained over the water content absorbed in the glass, can be carried out in liquid solutions of water and relatively short chain, i.e. up to about five carbon atoms, aliphatic alcohols or in gaseous atmospheres of such solutions. An ion exchange reaction of Li.sup.+ ions or protons with Na.sup.+ and/or K.sup.+ ions can be promoted at temperatures above the transformation range of the hydrated glass, and an exchange of K.sup.+ ions for Na.sup.+ and/or Li.sup.+ ions at temperatures below the transformation range. The invention also contemplates treating sodium and/or potassium hydrosilicate glass bodies, produced through the previous hydration of sodium and/or potassium silicate glass bodies, in a gaseous or liquid alcohol or water-alcohol mixture to impart increased strength and impact resistance thereto and alter the absorbed water content therein. The aforementioned ion exchange reactions are also applicable here.
REFERENCES:
patent: 2016892 (1935-10-01), Clarude
patent: 3186816 (1965-06-01), Wartenberg
patent: 3811853 (1974-05-01), Bartholomew et al.
patent: 3816107 (1974-06-01), Searight et al.
patent: 3839226 (1974-10-01), Yates
patent: 3844754 (1974-10-01), Grubb et al.
Bartholomew Roger F.
Haynes William L.
Sanford Leon M.
Corning Glass Works
Fisher Richard V.
Janes Jr. Clinton S.
Miga F. W.
Patty, Jr. Clarence R.
LandOfFree
Hydration of silicate glasses in alcohol-water solutions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydration of silicate glasses in alcohol-water solutions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydration of silicate glasses in alcohol-water solutions will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1786938