Invention Grant
- Patent Title: Process for producing synthetic quartz glass using a cleaning device
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Application No.: US15536426Application Date: 2015-12-15
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Publication No.: US11267745B2Publication Date: 2022-03-08
- Inventor: Hilmar Laudahn , Klaus-Uwe Badeke , Martin Trommer
- Applicant: Heraeus Quarzglas GmbH & Co. KG
- Applicant Address: DE Hanau
- Assignee: Heraeus Quarzglas GmbH & Co. KG
- Current Assignee: Heraeus Quarzglas GmbH & Co. KG
- Current Assignee Address: DE Hanau
- Agency: Panitch Schwarze Belisario & Nadel LLP
- Priority: EP14198100 20141216
- International Application: PCT/EP2015/079732 WO 20151215
- International Announcement: WO2016/096811 WO 20160623
- Main IPC: C03B19/14
- IPC: C03B19/14 ; C03B20/00 ; B01D53/02 ; B01J20/10 ; C03C3/04

Abstract:
A method for the production of synthetic quartz glass using a special cleaning device is provided. The method includes (a) evaporating a production material containing a polymerizable polyalkylsiloxane compound while forming a production material vapor, (b) passing the production material vapor resulting from step (a) through a cleaning device to purify the production material vapor, (c) supplying the purified production material vapor resulting from step (b) to a reaction zone in which the purified production material vapor is converted to SiO2 particles through oxidation and/or through hydrolysis, (d) depositing the SiO2 particles resulting from step (c) on a deposition surface, and optionally drying and vitrifying the deposited SiO2 particles resulting from step (d) to form synthetic quartz glass. The cleaning device includes a bulk of porous silica particles which have a BET specific surface area of at least 2 m2/g. A device for carrying out the method is also provided.
Public/Granted literature
- US20170341967A1 PROCESS FOR PRODUCING SYNTHETIC QUARTZ GLASS USING A CLEANING DEVICE Public/Granted day:2017-11-30
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