Dispersion comprising silicon/titanium mixed oxide powder,...

Details Dispersion comprising silicon/titanium mixed oxide powder,... Dispersion comprising silicon/titanium mixed oxide powder,...

2005-02-01

2005-02-01

Brunsman, David (Department: 1755)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic materials only containing at least one metal atom

C501S027000, C501S053000, C501S054000, C501S055000, C501S133000, C501S134000, C501S900000, C359S642000, C359S726000, C359S838000, C264S001100, C264S001210, C264S002600, C264S002700, C065S037000

Reexamination Certificate

active

06849114

ABSTRACT:
Aqueous dispersion comprising silicon/titanium mixed oxide powder with a BET surface area of 5 to 500 m2/g which has been prepared by flame hydrolysis and has a titanium dioxide content of 0.5 to 20 wt. %, based on the powder, water and at least one pH-regulating substance which can be removed completely from the reaction mixture on heating, the aqueous dispersion having a solids content of between 40 and 80 wt. %. A green body produced therefrom with a green density of between 40 and 85%. A shaped glass article of optical quality with a coefficient of thermal expansion of not more than 0.5×10−6/K produced from the green body.

REFERENCES:
patent: 3960855 (1976-06-01), De Marinis et al.
patent: 0 595 078 (1994-05-01), None
patent: 0 850 876 (1998-07-01), None
patent: 1 284 277 (2003-02-01), None
Borosilicate glasses, pp. 104-105, “Special Glasses and Their Applications” (with English translation), May 2000.

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