GB588924A - Improvement in treatment of metal surfaces, and agents employed therefor - Google Patents

Improvement in treatment of metal surfaces, and agents employed therefor

Info

Publication number
GB588924A
GB588924A GB13759/44A GB1375944A GB588924A GB 588924 A GB588924 A GB 588924A GB 13759/44 A GB13759/44 A GB 13759/44A GB 1375944 A GB1375944 A GB 1375944A GB 588924 A GB588924 A GB 588924A
Authority
GB
United Kingdom
Prior art keywords
metal surfaces
acid
agar
solution
stands
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
GB13759/44A
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.)
Henkel Corp
Original Assignee
Amchem Products Inc
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 Amchem Products Inc filed Critical Amchem Products Inc
Publication of GB588924A publication Critical patent/GB588924A/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
    • C23C22/06—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 aqueous acidic solutions with pH less than 6
    • C23C22/24—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 aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds
    • C23C22/33—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 aqueous acidic solutions with pH less than 6 containing hexavalent chromium compounds containing also phosphates
    • 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
    • C23C22/06—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 aqueous acidic solutions with pH less than 6
    • C23C22/07—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 aqueous acidic solutions with pH less than 6 containing phosphates
    • C23C22/08—Orthophosphates

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)
  • Chemical Treatment Of Metals (AREA)

Abstract

A dilute aqueous solution for treating metal surfaces primarily of iron or aluminium or their alloys, comprises an acid of phosphorus, or/and chromic acid in minute quantities to give a pH value between 3 and 5 and sufficient of a nonionic surface-active wetting agent to reduce the surface tension to a value of 50 dynes/cm. Orthophosphoric acid is preferred. The wetting agent may be natural, e.g., the saponius, casein, glue, starch, agar-agar, or synthetic, and may comprise between .001 and 2.0 per cent. of the solution. Substituted polyethylene glycols are preferred, such as represented by the formula RO(C2H4O)nR1 wherein "R" stands for an alkyl, aryl or aralkyl, alkyl-aryl or acyl radical containing at least 10 carbon atoms, "n" is an integer greater than 2, and "R1" stands for the said radicals or a hydrogen atom. Metal surfaces are rinsed with the said solution desirably heated to near the boiling point, before applying a protective coating. Specification 284,778, [Class 82 (ii)], is referred to.
GB13759/44A 1944-04-19 1944-07-18 Improvement in treatment of metal surfaces, and agents employed therefor Expired GB588924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US588924XA 1944-04-19 1944-04-19

Publications (1)

Publication Number Publication Date
GB588924A true GB588924A (en) 1947-06-06

Family

ID=22019553

Family Applications (1)

Application Number Title Priority Date Filing Date
GB13759/44A Expired GB588924A (en) 1944-04-19 1944-07-18 Improvement in treatment of metal surfaces, and agents employed therefor

Country Status (1)

Country Link
GB (1) GB588924A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139845A2 (en) * 1983-10-17 1985-05-08 Amchem Products, Inc. Coating composition

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139845A2 (en) * 1983-10-17 1985-05-08 Amchem Products, Inc. Coating composition
EP0139845A3 (en) * 1983-10-17 1985-06-12 Amchem Products, Inc. Coating composition

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