Momentive Performance Materials Gmbh

Draka Comteq B.v.

Guangjun Xu

Dennis Robert Simons

Rob Hubertus Matheus Deckers

Cedric Gonnet

Ivo Flammer

Larry Qiang Zeng

Konstantin Zuyev

Samuel Conzone

Martin Panchula

Tianjun Rong

Yen Zhou

Kipyung Ahn

Robert Koch

Cédric Gonnet

A method for forming high purity silica articles. The high purity silica articles can be particularly suitable for forming packaging such as packaging for pharmaceutical applications. The method for forming high purity silica articles can comprise, in one embodiment, (a) forming a fused quartz melt from a SiOraw material; (b) forming a quartz tube from the fused quartz melt; (c) treating the quartz tube with an acid composition; (d) heat treating the quartz tube subsequent to treating with the acid composition; and (e) optionally treating the quartz article with an acid composition subsequent to the heat treating operation. The method can enhance the purity of silica glass articles and products made therefrom.

Fused quartz tubing for pharmaceutical packaging and methods for making the same

A high silica glass composition comprising about 92 to about 99.9999 wt. % SiOand from about 0.0001 to about 8 wt. % of at least one dopant selected from AlO, CeO, TiO, LaO, YO, NdO, other rare earth oxides, and mixtures of two or more thereof. The glass composition has a working point temperature ranging from 600 to 2,000&#xb0; C. These compositions exhibit stability similar to pure fused quartz, but have a moderate working temperature to enable cost effective fabrication of pharmaceutical packages. The glass is particularly useful as a packaging material for pharmaceutical applications, such as, for example pre-filled syringes, ampoules and vials.

Fused quartz tubing for pharmaceutical packaging

Disclosed is a method of heat treating quartz glass deposition tubes at between 900&#xb0; C. and 1200&#xb0; C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.

Glass-tube extended-baking process

Extended-baking process for glass deposition tubes

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San Jose, CA, United States of America

Guangjun Xu