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公开(公告)号：US20180222791A1
公开(公告)日：2018-08-09
申请号：US15892029
申请日：2018-02-08
Applicant: Schott AG
Inventor： Ulrich Fotheringham , Michael Schwall , Simone Ritter , Peter Naß , Christof Kass , Christoph Berndhäuser , Christoph Groß
IPC: C03C3/093
Abstract: A glass having a good hydrolytic resistance and alkali resistance is defined by a targeted combination of stoichiometric glasses, including glasses also existing as crystals in the same stoichiometry and whose properties can be assumed as being very similar due to the identical topology of the structural units for glass and crystal, respectively. A process of producing the glasses is also provided.
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公开(公告)号：US20200010355A1
公开(公告)日：2020-01-09
申请号：US16460084
申请日：2019-07-02
Applicant: Schott AG
Inventor： Ulrich Fotheringham , Holger Wegener , Oliver Hochrein , Simone Monika Ritter , Wolfgang Mannstadt , Christoph Berndhäuser , Christoph Groß
Abstract: The present invention relates to glasses, such as e.g. thin or thinnest glasses, but also to glasses for the production of tubular glass, carpules and syringes as well as other pharmaceutical vessels. The glasses are characterized by a high chemical prestressability (tem-perability) with very well alkali, hydrolytic and/or acid resistance as well as an advantageous coefficient of thermal expansion. The glass has a composition characterized by the following constituent phases: 0-60 mol % reedmergnerite; 20-60 mol % albite; 0-30 mol % orthoclase; 0-20 mol % natrosilite; 0-20 mol % sodium metasilicate; 0-20 mol % parakeldyshite; 0-20 mol % narsarsukite; 0-20 mol % disodium zinc silicate; 0-21 mol % cordierite; and 0-20 mol % danburite. A quotient of a coefficient of thermal expansion of the glass multiplied by 1000 (in ppm/K) and the product of a pH value and a removal rate in alkaline environment (in mg/(dm23h)) according to ISO 695 is at least 9.0.
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公开(公告)号：US20240174550A1
公开(公告)日：2024-05-30
申请号：US18394471
申请日：2023-12-22
Applicant: Schott AG
Inventor： Ulrich Fotheringham , Azatuhi Ayrikyan , Thomas Pfeiffer , Simone Monika Ritter , Silke Wolff , Tobias Gotschke , Christoph Groß , Antje Klemm , Jens Ulrich Thomas , Martin Letz
CPC classification number: C03C3/097 , C03C3/089 , C03C4/20 , C03C15/00 , C03C23/006 , C03C2204/00
Abstract: A glass composition includes oxides which form non-volatile fluorides at a temperature of 150° C. and a pressure of 5 Pa or less and are present in an amount of less than 0.5 mol % in the glass composition, based on all oxides present in the glass composition. A working point of the glass composition is 1400° C. or less. The glass composition has a hydrolytic resistance characterized by a leachability of GeO2, P2O5 and/or B2O3 from the glass composition determined as concentrations in an eluate prepared according to ISO 719 of at least one of the following: less than 70 mg/l GeO2 in the eluate per 1 mol % GeO2 in the glass composition; less than 70 mg/l P2O5 in the eluate per 1 mol % P2O5 in the glass composition; or less than 300 mg/l B2O3 in the eluate per 1 mol % B2O3 in the glass composition.
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公开(公告)号：US10822265B2
公开(公告)日：2020-11-03
申请号：US15892029
申请日：2018-02-08
Applicant: Schott AG
Inventor： Ulrich Fotheringham , Michael Schwall , Simone Ritter , Peter Naß , Christof Kass , Christoph Berndhäuser , Christoph Groß
Abstract: A glass having a good hydrolytic resistance and alkali resistance is defined by a targeted combination of stoichiometric glasses, including glasses also existing as crystals in the same stoichiometry and whose properties can be assumed as being very similar due to the identical topology of the structural units for glass and crystal, respectively. A process of producing the glasses is also provided.
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