DE496189C - Method for preventing rusting of tinned iron sheet waste, tin cans or the like. - Google Patents

Method for preventing rusting of tinned iron sheet waste, tin cans or the like.

Info

Publication number
DE496189C
DE496189C DEG73492D DEG0073492D DE496189C DE 496189 C DE496189 C DE 496189C DE G73492 D DEG73492 D DE G73492D DE G0073492 D DEG0073492 D DE G0073492D DE 496189 C DE496189 C DE 496189C
Authority
DE
Germany
Prior art keywords
iron sheet
tin cans
sheet waste
preventing rusting
tinned iron
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
DEG73492D
Other languages
German (de)
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.)
Evonik Operations GmbH
Original Assignee
TH Goldschmidt AG
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 TH Goldschmidt AG filed Critical TH Goldschmidt AG
Priority to DEG73492D priority Critical patent/DE496189C/en
Application granted granted Critical
Publication of DE496189C publication Critical patent/DE496189C/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
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
    • C23C22/60—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using alkaline aqueous solutions with pH greater than 8
    • C23C22/62—Treatment of iron or alloys based thereon

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Description

Verfahren zur Verhinderung des Rostens von entzinnten Eisenblechabfgllen, Konservendosen o. dgl.Methods of preventing rusting of tin-plated iron sheet waste, Tin cans or the like

Zusatz zum Patent 486 984 Das Patent .186 984 betrifft ein Verfahren zur Verhinderung des Rostens von entzinnten Eisenblechabfällen, Konservendosen o. dgl. Das Verfahren besteht darin, .die Abfälle nach der Entzinnung mit Alkalilauge zu kochen, um auf diese Weise Reste des Entzinnungsmittels oder der durch den Entzinnungsprozeß gebildeten Zinn- und Eiseaverbxndungen,, die wegen ihrer sauren Eigenschaften eine starke Korrosionswirkung auf das Eisen ausüben, anschädlich zu machen.Addendum to Patent 486,984 Patent .186,984 relates to a method to prevent rusting of tinned iron sheet waste, tin cans, etc. Like. The method consists in. The waste after detinning with alkali to boil in order to avoid the remnants of the detinning agent or that of the detinning process formed tin and iron compounds, which because of their acidic properties have a strong corrosive effect on the iron, making it harmful.

Es hat sich nun herausgestellt, daß man die Abfälle in der Alkalilauge nicht unbedingt zu kaschen braucht, sondern das eine Behandlung (1(-r Abfälle mit erhitzter Al.kalilauge genügt. Behandelt man beispielsweise entzinnte Blechpakete mit einer auf etwa 8o° erhitzten Natronlauge, so erhält man vollständig blanke Pakete, bei denen auch nach langer Lagerzeit eine schädliche Korrosionswirkung nicht festzustellen ,ist.It has now been found that the waste in the alkali lye does not necessarily need to be kased, but that requires treatment (1 (-r waste with Heated aluminum potassium hydroxide solution is sufficient. For example, if you treat de-tinned sheet metal stacks with caustic soda heated to about 80 °, you get completely bare packets, in which no harmful corrosion effect can be determined even after a long period of storage ,is.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verhinderung des Rostens von entzinnten Eise.nblechabfällen, Konservendosen o. dgl. nach Patent 486 984, dadurch gekennzeichnet, daß man die Albfälle nach der Entzinnung mit h-eiffier Alkalilauge behandelt.PATENT CLAIM: Method for preventing rusting of de-tinned Iron sheet waste, tin cans or the like according to Patent 486 984, characterized in that that one treats the nightmares after detinning with h-eiffier alkali lye.
DEG73492D 1928-05-30 1928-05-30 Method for preventing rusting of tinned iron sheet waste, tin cans or the like. Expired DE496189C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG73492D DE496189C (en) 1928-05-30 1928-05-30 Method for preventing rusting of tinned iron sheet waste, tin cans or the like.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG73492D DE496189C (en) 1928-05-30 1928-05-30 Method for preventing rusting of tinned iron sheet waste, tin cans or the like.

Publications (1)

Publication Number Publication Date
DE496189C true DE496189C (en) 1930-04-11

Family

ID=7135579

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG73492D Expired DE496189C (en) 1928-05-30 1928-05-30 Method for preventing rusting of tinned iron sheet waste, tin cans or the like.

Country Status (1)

Country Link
DE (1) DE496189C (en)

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