Process for producing and processing a paste-like SiO2 composition, and the use thereof

US9533890B2 · kind B2 · utility

Assignee

• HERAEUS QUARZGLAS GMBH & CO. KG · DE

Inventors

• Jurgen Weber · Oberhausen, DE
• Norbert Traeger · Maintal, DE
• Gerrit Scheich · Seligenstadt, DE
• Waltraud Werdecker · Hanau, DE
• Christian Schenk · Ingelheim am Rhein, DE
• Joachim Peekhaus · Bad Orb, DE
• Kerstin Meyer-Merget · Alzenau, DE
• Sebastian Pankalla · Ludwigshafen, DE

Key dates

• Filing date: Mar 7, 2013
• Grant date: Jan 3, 2017
• Expiry date: Jun 9, 2033

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/30
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The invention relates to a process for producing a paste-like SiO2 composition using an SiO2 slip which allows simple intermediate storage and transport conditions without the processability of the slip to give the paste-like SiO2 composition being impaired thereby. According to the invention, it is for this purpose proposed that a homogeneous SiO2 base slip be subjected to a drying step to form a dry SiO2 composition and subsequently be processed further by means of a remoistening step to give the paste-like SiO2 composition, where the remoistening step comprises the addition of liquid to the dry SiO2 composition to form a paste-like kneadable SiO2 composition having a solids content of more than 85% by weight. The invention further relates to the use of a paste-like SiO2 composition as repair composition.