Hollow glass microspheres comprising selenium oxide and...

Details Hollow glass microspheres comprising selenium oxide and... Hollow glass microspheres comprising selenium oxide and...

2011-03-08

2011-03-08

Le, H. (Holly) T (Department: 1788)

Glass manufacturing

Processes

Self-supporting particle making

C065S083000, C428S402000, C501S033000, C501S039000, C501S084000

Reexamination Certificate

active

07900474

ABSTRACT:
Hollow glass microspheres are made using selenium oxide as the blowing agent. The use of selenium oxide provides two unique advantages: lower density and smaller hollow microspheres are obtained because loss of selenium oxide gas out of the liquid glass bubble during formation is slow, and the hollow microspheres will contain a vacuum due to the condensation of selenium oxide gas blowing agent upon cooling of the spheres below 315 deg. C.

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