← Back to Patent Explorer
EP0158778A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Luminescent zinc silicate materials activated with manganese and process for their manufacture

Assignee: Evonik Operations GmbH
•
Filing: 1985-02-06
•
Granted: —
•
Expires: 2005-02-06
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Translated from German Leuchtstoffe auf der Basis von mit Mangan aktiviertem Zinksilikat und Verfahren zu ihrer Herstellung (I). Phosphors based on zinc silicate activated with manganese and process for their production (I). Es werden Leuchtstoffe auf der Basis von mit Mangan aktiviertem Zinksilikat beschrieben, die bei gleicher Leuchtintensität aus Komponenten handelsüblicher Reinheit hergestellt werden können, nicht mahlempfindlich, temperaturstabil und stabil gegen die üblichen keramischen Glasuren sind. Sie bestehen aus 1,5 bis 93,9 Mol% Zinkoxid (ZnO) 5 bis 90 Mol% Siliziumoxid (SiO 2 ) 0,9 bis 2 Mol% Manganoxid (MnO) 0,1 bis 25 Mol% Alkalioxid und/oder Erdalkalioxid und oder Titanoxid (TiO 2 ) und/oder Zirkoniumoxid (ZrO 2 ) und/oder Chromoxid (Cr 2 0 3 ) und/oder Bleioxid (PbO) 0,1 bis 25 Mol% Aluminiumoxid (AI 2 0 3 ) Phosphors are described on the basis of zinc silicate activated with manganese, which can be produced from components of commercially available purity with the same luminous intensity, are not sensitive to grinding, are temperature-stable and stable against the usual ceramic glazes. they consist of 1.5 to 93.9 mol% zinc oxide (ZnO) 5 to 90 mol% silicon oxide (SiO 2 ) 0.9 to 2 mol% manganese oxide (MnO) 0.1 to 25 mol% of alkali oxide and / or alkaline earth oxide and or titanium oxide (TiO 2 ) and / or zirconium oxide (ZrO 2 ) and / or chromium oxide (Cr 2 0 3 ) and / or Lead oxide (PbO) 0.1 to 25 mol% of aluminum oxide (AI 2 0 3 )

Inventors

  • 👤 Akos Dr. Dipl.-Chem. Kiss
  • 👤 Peter Dr. Dipl.-Chem. Kleinschmit
  • 👤 Werner Dr. Dipl.-Chem. Völker
  • 👤 Günter Dipl.-Ing. Halbritter

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-29 02:59
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/08; C09K11/59; C09K11/592; C09K11/595; C09K11/64; C09K11/646; C09K11/66; C09K11/666; C09K11/67; C09K11/676

Claims Analysis

Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Maintenance schedule is calculated for granted US utility patents.

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag