US2403426A - Metal coating process - Google Patents

Metal coating process Download PDF

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Publication number
US2403426A
US2403426A US563458A US56345844A US2403426A US 2403426 A US2403426 A US 2403426A US 563458 A US563458 A US 563458A US 56345844 A US56345844 A US 56345844A US 2403426 A US2403426 A US 2403426A
Authority
US
United States
Prior art keywords
solution
chromic acid
rinsing
phosphate
blisters
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 - Lifetime
Application number
US563458A
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English (en)
Inventor
Douty Alfred
Gerald C Romig
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
Priority to BE463593D priority Critical patent/BE463593A/xx
Application filed by Amchem Products Inc filed Critical Amchem Products Inc
Priority to US563458A priority patent/US2403426A/en
Priority to GB11277/45A priority patent/GB596876A/en
Application granted granted Critical
Publication of US2403426A publication Critical patent/US2403426A/en
Priority to CH261134D priority patent/CH261134A/de
Priority to DEA3711A priority patent/DE972727C/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • C23C22/82—After-treatment
    • C23C22/83—Chemical after-treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/32—Wipers or the like, e.g. scrapers characterised by constructional features of wiper blade arms or blades
    • B60S1/40—Connections between blades and arms

Definitions

  • This invention relates to the art of finishing metal with a coat of paint, varnish, enamel, japan or other similar siccative coating. It is particularly concerned with the provision of an improved method of preparing ferrrous metal surfaces for the reception of such siccative coats.
  • the principal objects of the invention are to improve the adherence of siccative coatings, to increase their life, especially under corrosive influences such as those which are associated with humid atmospheres, salt water, acid fumes, or the like,- and to prevent the appearance of blisters in the siccative coats, especially when these are subjected to humid atmospheres.
  • the phosphate mixtures which we employ are such as have a pH higher than that corresponding to the monobasic phosphates present alone and lower than that corresponding to the dibasic phosphates alone.
  • Such solutions contain no free phosphoric acid nor any tertiary phosphates.
  • the surface of grease, oil, dirt and the like and their action in this respect may be augmented, if desired, by the inclusion of organic detergents of various classes and may even include a certain amount of neutral inert salts such as sodium sulfate, for example.
  • the organic detergent of the above formula may be of the class of the well-known organic detergents of good wetting and emulsifying power.
  • wetting agents suitable for use in the above formula we may employ sodium alkyl sulfates such as sodium lauryl sulfate sold under the trade name Nornol; sulfonated hydrocarbons such as alkylated naphthalene sulfonic acids, etc. (commercial products of this kind are sold under the names Santomerse," Naccanol,” etc.); and non-ionic detergents which are derivatives of poly ethylene glycol (some of these are sold under the trade names Igepal," "Triton NE, etc.). Certain cation-active materials are likewise suitable. In general, any organic detergent sufficiently soluble and stable at the pH of the solution and of adequate surface tension depressant and emulsifying power may be used.
  • Solutions of this kind will free The strength of the solution and the proportion of ingredients may be varied widely to suit specific conditoins. In general, solutions within the pH range of 4.7 to 6.5 are preferred as these have the widest general applicability.
  • a preliminary water rinse may be employed followed by a rinse with a dilute solution containing chromic 'acid.
  • the chromic acid rinsing solution should preferably be used hot and should be allowed to dry upon the work before the siccative coating is applied.
  • the chromic acid solution is prepared by dissolving from 1 oz. to 16 oz. of chromic acid per gallons of water.
  • 4 oz. of chromic acid per 100 gallons of water is preferred and while a strength greater than 8 oz. per 100 gallons of water seems to be unnecessary, it appears to do little, if any, harm iintil somewhat over 16 oz. are used. Stronger solutions of chromic acid are likely to injure the subsequently applied siccative coating.
  • the solution must contain from 1 to 16 ounces of total chromic acid per 100 gallons.
  • a simple water rinse after the treatment with the alkali phosphate solution and before the use of the chromic acid rinse so as to avoid contamination of the latter but no treatment is necessary after the chromic acid rinse and before the application of the siccative coating. If any subsequent rinsing takes place it should be with distilled water or at least with water which does not contain sufficient impurities to produce blisters in the subsequently applied siccative coating.
  • the treatment in the chromic acid rinse needs on y to be suiiiciently long to replace thoroughly any previous solution or rinse water so that the work may be thoroughly wetted with the chromic acid solution and, since the work must be dried after the chromic acid rinse and before the application of the finished coat, it is preferable to use the chromic acid solution at a temperature approaching the boiling point so that the metal may be ried more readily.
  • temperatures as ow as room temperature or even lower are perfectly satisfactory provided suitable means are available for thoroughly drying the surface after the chromic acid rinse.
  • alkali phosphates is intended to include ammonium phosphate.
  • the method which includes treating the surface with a composition which consists essentially of an aqueous solution of both primary and secondary phosphates from the class which consists of alkali metals and ammonium, the pH of which lies between 4.7 and 6.5 and is greater than that corresponding to the mono-basic phosphate present alone and lower than that corresponding to the dibasic phosphate present alone, rinsing the surface so treated with a dilute aqueous solution containing chromic acid having a pH in the range 2.0 to 4.6. inclusive, and containing no more soluble salt than corresponds to the metal equivalent of 30 oz. of sodium dihydrogen phosphate per gallons, drying the rinsed surface and then applying a siccative finishing coat to the dry surface.
  • a composition which consists essentially of an aqueous solution of both primary and secondary phosphates from the class which consists of alkali metals and ammonium, the pH of which lies between 4.7 and 6.5 and is greater than that corresponding to the mono-bas
  • the dilute chromic acid rinsing solution contains from 1 to 16 oz. of chromic acid per 100 gallons of solution.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Treatment Of Metals (AREA)
US563458A 1944-11-14 1944-11-14 Metal coating process Expired - Lifetime US2403426A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE463593D BE463593A (enrdf_load_html_response) 1944-11-14
US563458A US2403426A (en) 1944-11-14 1944-11-14 Metal coating process
GB11277/45A GB596876A (en) 1944-11-14 1945-05-03 Method of improving the adherence of siccative coatings to ferrous metal surfaces
CH261134D CH261134A (de) 1944-11-14 1947-06-09 Verfahren zur Vorbereitung von Metalloberflächen für das Aufbringen von Überzügen.
DEA3711A DE972727C (de) 1944-11-14 1949-01-18 Verfahren zur Behandlung von Metalloberflaechen vor dem Aufbringen von UEberzuegen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US563458A US2403426A (en) 1944-11-14 1944-11-14 Metal coating process

Publications (1)

Publication Number Publication Date
US2403426A true US2403426A (en) 1946-07-02

Family

ID=24250562

Family Applications (1)

Application Number Title Priority Date Filing Date
US563458A Expired - Lifetime US2403426A (en) 1944-11-14 1944-11-14 Metal coating process

Country Status (5)

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US (1) US2403426A (enrdf_load_html_response)
BE (1) BE463593A (enrdf_load_html_response)
CH (1) CH261134A (enrdf_load_html_response)
DE (1) DE972727C (enrdf_load_html_response)
GB (1) GB596876A (enrdf_load_html_response)

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2471907A (en) * 1948-04-01 1949-05-31 American Chem Paint Co Method of and material for increasing the corrosion resistance of ferriferous metals
US2471908A (en) * 1948-04-08 1949-05-31 American Chem Paint Co Method of and material for preparing surfaces of ferriferous metals for the reception of a siccative finishing coat
US2479423A (en) * 1946-02-07 1949-08-16 American Chem Paint Co Method of and materials for treating surfaces of iron, zinc, and alloys of each
US2505785A (en) * 1945-09-17 1950-05-02 Howard R Moore Method of producing a corrosion inhibitive coating on ferrous metals
US2552874A (en) * 1950-05-01 1951-05-15 American Chem Paint Co Method of phosphatizing ferriferous surfaces
US2568936A (en) * 1949-12-14 1951-09-25 American Chem Paint Co Method of improving the resistance to corrosion and abrasion of certain coated aluminum surfaces
US2609308A (en) * 1947-11-22 1952-09-02 Parker Rust Proof Co Method and material for producing coatings on metal
US2657156A (en) * 1948-07-23 1953-10-27 Parker Rust Proof Co Phosphate coating composition and process
US2662831A (en) * 1950-07-19 1953-12-15 Anderson Brass Works Method of bonding copper to aluminum or aluminum alloys
US2671995A (en) * 1949-10-22 1954-03-16 Colgate Palmolive Co Packaging of materials
US2671997A (en) * 1949-11-05 1954-03-16 Colgate Palmolive Co Method of treating collapsible aluminum tube containers
US2674552A (en) * 1950-06-06 1954-04-06 Detrex Corp Method of and material for coating iron and steel surfaces
US2702768A (en) * 1948-07-23 1955-02-22 Parker Rust Proof Co Ferrous surface coating process using alkali metal phosphates and hydroxylamines
US2724668A (en) * 1952-10-03 1955-11-22 Parker Rust Proof Co Combination cleaning and coating solution for metallic surfaces and method of forming coatings therewith
US2739915A (en) * 1950-07-20 1956-03-27 Schuster Ludwig Karl Multiple action lubricating composition
US2744555A (en) * 1950-03-31 1956-05-08 Parker Rust Proof Co Method of simultaneously phosphating and cleaning metal surfaces and composition therefor
US2784124A (en) * 1953-07-01 1957-03-05 Howard R Moore Method of coating ferrous metal surface and composition therefor
US2809906A (en) * 1952-11-25 1957-10-15 Wyandotte Chemicals Corp Phosphating compositions
US2813815A (en) * 1955-07-26 1957-11-19 American Chem Paint Co Method of treating phosphate coatings on metal surfaces
US2882189A (en) * 1954-10-20 1959-04-14 Parker Rust Proof Co Alkali metal phosphate coating method for metals and article produced thereby
US2928762A (en) * 1955-08-09 1960-03-15 Neilson Chemical Company Phosphate coating of metals
US2970935A (en) * 1959-03-02 1961-02-07 Parker Rust Proof Co Method of rinsing metallic surfaces with solutions containing hexavalent chromium
US3101287A (en) * 1961-01-03 1963-08-20 Leo V Curtin Conditioning treatment for metal surfaces
US3245841A (en) * 1961-08-31 1966-04-12 Clarke Sydney George Production of iron powder having high electrical resistivity
US3247791A (en) * 1960-05-06 1966-04-26 Litho Chemical And Supply Co I Surface treated lithographic plates and production thereof
US3411995A (en) * 1965-03-15 1968-11-19 Enthone Process and product for plating on cast,malleable,carburized and carbonitrided irons

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL179340B (nl) * 1952-06-24 Colgate Palmolive Co Bevestigingsband voor een wegwerpluier, die na gebruik in een opgerolde stand is vast te houden.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB517049A (en) * 1937-07-20 1940-01-18 Pyrene Co Ltd Improvements in or relating to improving the resistance of metals to corrosion

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2505785A (en) * 1945-09-17 1950-05-02 Howard R Moore Method of producing a corrosion inhibitive coating on ferrous metals
US2479423A (en) * 1946-02-07 1949-08-16 American Chem Paint Co Method of and materials for treating surfaces of iron, zinc, and alloys of each
US2609308A (en) * 1947-11-22 1952-09-02 Parker Rust Proof Co Method and material for producing coatings on metal
US2471907A (en) * 1948-04-01 1949-05-31 American Chem Paint Co Method of and material for increasing the corrosion resistance of ferriferous metals
US2471908A (en) * 1948-04-08 1949-05-31 American Chem Paint Co Method of and material for preparing surfaces of ferriferous metals for the reception of a siccative finishing coat
US2702768A (en) * 1948-07-23 1955-02-22 Parker Rust Proof Co Ferrous surface coating process using alkali metal phosphates and hydroxylamines
US2657156A (en) * 1948-07-23 1953-10-27 Parker Rust Proof Co Phosphate coating composition and process
US2671995A (en) * 1949-10-22 1954-03-16 Colgate Palmolive Co Packaging of materials
US2671997A (en) * 1949-11-05 1954-03-16 Colgate Palmolive Co Method of treating collapsible aluminum tube containers
US2568936A (en) * 1949-12-14 1951-09-25 American Chem Paint Co Method of improving the resistance to corrosion and abrasion of certain coated aluminum surfaces
US2744555A (en) * 1950-03-31 1956-05-08 Parker Rust Proof Co Method of simultaneously phosphating and cleaning metal surfaces and composition therefor
US2552874A (en) * 1950-05-01 1951-05-15 American Chem Paint Co Method of phosphatizing ferriferous surfaces
DE966947C (de) * 1950-05-01 1957-09-19 American Chem Paint Co Verfahren zur Erzeugung von Phosphatschichten auf Metallen, insbesondere auf Eisen und Stahl
US2674552A (en) * 1950-06-06 1954-04-06 Detrex Corp Method of and material for coating iron and steel surfaces
US2662831A (en) * 1950-07-19 1953-12-15 Anderson Brass Works Method of bonding copper to aluminum or aluminum alloys
US2739915A (en) * 1950-07-20 1956-03-27 Schuster Ludwig Karl Multiple action lubricating composition
US2724668A (en) * 1952-10-03 1955-11-22 Parker Rust Proof Co Combination cleaning and coating solution for metallic surfaces and method of forming coatings therewith
US2809906A (en) * 1952-11-25 1957-10-15 Wyandotte Chemicals Corp Phosphating compositions
US2784124A (en) * 1953-07-01 1957-03-05 Howard R Moore Method of coating ferrous metal surface and composition therefor
US2882189A (en) * 1954-10-20 1959-04-14 Parker Rust Proof Co Alkali metal phosphate coating method for metals and article produced thereby
US2813815A (en) * 1955-07-26 1957-11-19 American Chem Paint Co Method of treating phosphate coatings on metal surfaces
US2928762A (en) * 1955-08-09 1960-03-15 Neilson Chemical Company Phosphate coating of metals
US2970935A (en) * 1959-03-02 1961-02-07 Parker Rust Proof Co Method of rinsing metallic surfaces with solutions containing hexavalent chromium
US3247791A (en) * 1960-05-06 1966-04-26 Litho Chemical And Supply Co I Surface treated lithographic plates and production thereof
US3101287A (en) * 1961-01-03 1963-08-20 Leo V Curtin Conditioning treatment for metal surfaces
US3245841A (en) * 1961-08-31 1966-04-12 Clarke Sydney George Production of iron powder having high electrical resistivity
US3411995A (en) * 1965-03-15 1968-11-19 Enthone Process and product for plating on cast,malleable,carburized and carbonitrided irons

Also Published As

Publication number Publication date
DE972727C (de) 1959-09-10
GB596876A (en) 1948-01-13
CH261134A (de) 1949-04-30
BE463593A (enrdf_load_html_response)

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