GB1110155A - Process for polishing glasses - Google Patents

Process for polishing glasses

Info

Publication number
GB1110155A
GB1110155A GB20730/66A GB2073066A GB1110155A GB 1110155 A GB1110155 A GB 1110155A GB 20730/66 A GB20730/66 A GB 20730/66A GB 2073066 A GB2073066 A GB 2073066A GB 1110155 A GB1110155 A GB 1110155A
Authority
GB
United Kingdom
Prior art keywords
concentration
h2sif6
acid
articles
introducing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB20730/66A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB1110155A publication Critical patent/GB1110155A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • C03C15/02—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface
    • C03C15/025—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface for polishing crystal glass, i.e. lead glass
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
    • C03C15/02—Surface treatment of glass, not in the form of fibres or filaments, by etching for making a smooth surface

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

Crystal glass is polished in a bath containing HF and at least 63% H2SO4 by weight, the amount of H2SiF6 being kept below saturation level. The H2SO4 concentration may be up to 75%, H2SiF6 may be 2.5-4%, and HF 3-10%. The H2SiF6 concentration is kept low, e.g. by continuously withdrawing liquor and replenishing with fresh acid; local concentration may be prevented by vigorous stirring. The HF concentration may be maintained by introducing the acid continuously into the bath near the bottom, or by introducing HF gas. The bath temperature is 35-70 DEG C. After treatment the acid is rinsed off the articles with water, e.g. at 50 DEG C. The articles may have previously been ground.
GB20730/66A 1965-05-26 1966-05-10 Process for polishing glasses Expired GB1110155A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES0097315 1965-05-26

Publications (1)

Publication Number Publication Date
GB1110155A true GB1110155A (en) 1968-04-18

Family

ID=7520650

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20730/66A Expired GB1110155A (en) 1965-05-26 1966-05-10 Process for polishing glasses

Country Status (3)

Country Link
US (1) US3546037A (en)
DE (1) DE1496666C3 (en)
GB (1) GB1110155A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3656925A (en) * 1970-05-28 1972-04-18 Owens Illinois Inc Method and apparatus for joining two glass parts or articles
USRE29336E (en) * 1974-02-22 1977-08-02 Western Electric Company, Inc. Method of etching a surface of a substrate comprising LiTaO3 and chemically similar materials
DE2949383C2 (en) * 1979-12-07 1982-01-21 Sälzle, Erich, Dr., 8000 München Process for sulfuric acid-hydrofluoric acid polishing of glass objects
ES8500612A1 (en) * 1982-10-13 1984-11-16 Saelzle Erich Process for polishing glass objects in a polishing bath containing sulfuric acid and hydrofluoric acid.
US4944986A (en) * 1988-09-23 1990-07-31 Zuel Company Anti-reflective glass surface
US5120605A (en) * 1988-09-23 1992-06-09 Zuel Company, Inc. Anti-reflective glass surface
DE4217057A1 (en) * 1992-05-22 1993-11-25 Saelzle Erich A method of reducing the lead and / or barium emission of lead and / or barium containing crystal glassware in contact with a liquid phase
US6929861B2 (en) 2002-03-05 2005-08-16 Zuel Company, Inc. Anti-reflective glass surface with improved cleanability
DE102019113960A1 (en) * 2019-03-29 2020-10-01 Pierce Protocols Limited Process and system for glass etching preparation
FR3101076B1 (en) * 2019-09-20 2022-01-14 Commissariat Energie Atomique PROCESS FOR THE TREATMENT OF A GLASS COMPRISING LEAD TO LIMIT THE MIGRATION IN SOLUTION OF THE LEAD CONTAINED IN THIS GLASS

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1777321A (en) * 1928-09-24 1930-10-07 Meth Isaac Glass-polishing solution and method of polishing glass
US2999013A (en) * 1959-11-03 1961-09-05 Meth Max Method of making glass non-reflective
DE1185780B (en) * 1962-11-10 1965-01-21 Erich Saelzle Dipl Chem Dr Process for polishing objects made of crystal or lead crystal glass

Also Published As

Publication number Publication date
DE1496666C3 (en) 1974-04-04
DE1496666A1 (en) 1970-08-13
US3546037A (en) 1970-12-08
DE1496666B2 (en) 1973-08-23

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