Process for preparing black glass using cyclosiloxane precursors

Details Process for preparing black glass using cyclosiloxane precursors Process for preparing black glass using cyclosiloxane precursors

1990-09-21

1993-07-27

Dixon, Jr., William R.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

65901, 65 181, 423338, C03B 800

Patent

active

052310590

ABSTRACT:
A process for preparing an oxidation resistant black glass having the empirical formula SiC.sub.x O.sub.y, wherein 0<x.ltoreq.2.0 and 0<y.ltoreq.2.2. The process comprises reacting cyclosiloxane monomers to effect the bonding of one vinyl carbon atom to a silicon, curing the product at not greater than 250.degree. C., and pyrolyzing at about 800.degree.-1400.degree. C. in an atmosphere containing a sufficient amount of oxygen to reduce the carbon content of the black glass to a desired level.

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patent: 4234713 (1980-11-01), LeGrow
patent: 4460638 (1984-07-01), Haluska
patent: 4460639 (1984-07-01), Chi et al.
patent: 4460640 (1984-07-01), Chi et al.
patent: 4981820 (1991-01-01), Renlund et al.
patent: 5043002 (1991-08-01), Dobbins et al.
Prewo et al., Ceramic Bulletin, vol. 65, No. 2 (1986).

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