公开(公告)号：US20030232149A1

公开(公告)日：2003-12-18

申请号：US10372411

申请日：2003-02-25

Applicant: DEGUSA AG

Inventor： Monika Oswald ,  Klaus Deller ,  Helmut Mangold ,  Gerrit Schneider ,  Rolf Clasen ,  Markus Hornfeck

IPC: C23C004/10

CPC classification number: C01B33/1417 ,  C03C1/02 ,  C03C3/06 ,  C03C3/076 ,  C03C2201/42 ,  Y10S501/90

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 0.5null10null6/K produced from the green body.

Abstract translation: 含有BET表面积为5〜500m 2 / g的硅/钛混合氧化物粉末的水分散体，其通过火焰水解制备，二氧化钛含量为0.5〜20重量％。 ％，基于粉末，水和至少一种pH调节物质，其可以在加热时从反应混合物中完全除去，水分散体的固体含量为40-80重量％。 ％。 由其生产的生坯，其生坯密度在40％至85％之间。 由绿色体制成的具有不大于0.5×10 -6 / K的热膨胀系数的光学品质的成形玻璃制品。