GB669058A - Method of protecting silverware from tarnish - Google Patents

Method of protecting silverware from tarnish

Info

Publication number
GB669058A
GB669058A GB451249A GB451249A GB669058A GB 669058 A GB669058 A GB 669058A GB 451249 A GB451249 A GB 451249A GB 451249 A GB451249 A GB 451249A GB 669058 A GB669058 A GB 669058A
Authority
GB
United Kingdom
Prior art keywords
cloth
zinc
carbonate
acetate
sodium
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
GB451249A
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.)
CHARLES GEOFFREY TURTON GREAVE
Original Assignee
CHARLES GEOFFREY TURTON GREAVE
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 CHARLES GEOFFREY TURTON GREAVE filed Critical CHARLES GEOFFREY TURTON GREAVE
Priority to GB451249A priority Critical patent/GB669058A/en
Publication of GB669058A publication Critical patent/GB669058A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/02—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in air or gases by adding vapour phase inhibitors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

669,058. Wrapping silverwear. GREAVES, C. G. T. (Oneida, Ltd.). Feb. 18, 1949. No. 4512/49. Classes 94(i) and 94(ii). [Also in Group VIII]. Silverwear is protected against tarnishing by wrapping it in a material impregnated with a zinc carbonate or zinc borate. According to one example, the wrapping material such as a piece of cloth is first placed in a bath of zinc acetate solution and then immersed one or more times in a bath containing an aqueous solution of sodium carbonate to form an insoluble zinc carbonate and sodium acetate, sufficient sodium carbonate being present to ensure that an excess is retained in the cloth. The cloth is then rinsed in water to remove some of the excess carbonate and acetate, passed through squeeze rolls and finally dried. According to a second example, the cloth is first impregnated with zinc acetate and then immersed in an aqueous solution of borax to form an insoluble zinc borate and sodium acetate. In both cases the pH of the mixture of salts impregnated in the cloth is adjusted to a value between 7 and 8.5 by adjusting the amounts of sodium carbonate or borax and sodium acetate retained in the cloth. In use, the zinc carbonate or borate reacts with hydrogen sulphide to form a white zinc sulphide which does not alter the colour of the cloth. The acid which is also formed is neutralized by the sodium salts.
GB451249A 1949-02-18 1949-02-18 Method of protecting silverware from tarnish Expired GB669058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB451249A GB669058A (en) 1949-02-18 1949-02-18 Method of protecting silverware from tarnish

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB451249A GB669058A (en) 1949-02-18 1949-02-18 Method of protecting silverware from tarnish

Publications (1)

Publication Number Publication Date
GB669058A true GB669058A (en) 1952-03-26

Family

ID=9778603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB451249A Expired GB669058A (en) 1949-02-18 1949-02-18 Method of protecting silverware from tarnish

Country Status (1)

Country Link
GB (1) GB669058A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952510A (en) * 1958-09-23 1960-09-13 Morris I Naken Silverware blanket and drawer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952510A (en) * 1958-09-23 1960-09-13 Morris I Naken Silverware blanket and drawer

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