Glass manufacturing – Processes – Fining or homogenizing molten glass
Patent
1976-02-03
1977-06-07
Bashore, S. Leon
Glass manufacturing
Processes
Fining or homogenizing molten glass
65DIG14, 106 52, 106 734, 106 735, 252317, C03B 516, C03C 304
Patent
active
040280853
ABSTRACT:
A process is provided for producing carbon-free homogeneous silicate compositions comprising;
Combining a hydrolyzable metal alkoxide with a clear solution of a partially hydrolyzed silicon tetraalkoxide so as to form a clear solution of a further hydrolyzable metallosiloxane;
Adding an additional quantity of water to said solution in an amount in excess of that required to theoretically hydrolyze residual alkoxy groups of said further hydrolyzable metallosiloxane, thereby forming a substantially hydrolyzed metallosiloxane;
Fractionally distilling said substantially hydrolyzed metallosiloxane, i.e. heating under a fractionating column, in the presence of free water for a time sufficient to remove all residual alcohol as distillate and hydrolyze residual alkoxy groups.
REFERENCES:
patent: 3640093 (1972-02-01), Levene et al.
patent: 3759683 (1973-09-01), Dislich et al.
patent: 3799754 (1974-03-01), Thomas
patent: 3811918 (1974-05-01), Levene
patent: 3847583 (1974-11-01), Dislich et al.
Bashore S. Leon
Holler Edward J.
Miga Frank W.
Owens--Illinois, Inc.
Rywalski Robert F.
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