GB1349826A – Process for rinsing coated metal surfaces
– Google Patents
GB1349826A – Process for rinsing coated metal surfaces
– Google Patents
Process for rinsing coated metal surfaces
Info
Publication number
GB1349826A
GB1349826A
GB2731872A
GB2731872A
GB1349826A
GB 1349826 A
GB1349826 A
GB 1349826A
GB 2731872 A
GB2731872 A
GB 2731872A
GB 2731872 A
GB2731872 A
GB 2731872A
GB 1349826 A
GB1349826 A
GB 1349826A
Authority
GB
United Kingdom
Prior art keywords
acid
coating
metal
composition
rinse solution
Prior art date
1971-06-14
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
GB2731872A
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.)
1971-06-14
Filing date
1972-06-12
Publication date
1974-04-10
1972-06-12
Application filed by Amchem Products Inc
filed
Critical
Amchem Products Inc
1974-04-10
Publication of GB1349826A
publication
Critical
patent/GB1349826A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
B05D7/142—Auto-deposited coatings, i.e. autophoretic coatings
B—PERFORMING OPERATIONS; TRANSPORTING
B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
B05D7/142—Auto-deposited coatings, i.e. autophoretic coatings
B05D7/144—After-treatment of auto-deposited coatings
C—CHEMISTRY; METALLURGY
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
C09D5/08—Anti-corrosive paints
C09D5/088—Autophoretic paints
Abstract
1349826 Coating metal AMCHEM PRODUCTS Inc 12 June 1972 [14 June 1971] 27318/72 Heading B2E A film-forming material is supplied to the surface of a metal susceptible to acid-etching by contacting the metal surface with a coating- forming composition comprising a film-forming material in an aqueous phase containing a metal-etching acid and an oxidising agent, thereafter rinsing the deposited coating with a solution containing hexavalent chromium. Preferably the rinse solution is one in which the hexavalent chromium has been partially reduced with formaldehyde. The rinse solution may contain phosphoric acid to prevent gelling, water-soluble or water-dispersable polyacrylic acid. Preferably the pH of the rinse solution is less than 3.3. The rinse solution may be applied by spraying or by immersing the coated surface in the rinse solution. The film-forming material may be a fatty acid, e.g. stearic acid or preferably a synthetic resin, e.g. polyethylene, polyacrylic resin, styrene-butadiene copolymer. The preferred acid is hydrofluoric acid. Preferably the pH of the coating composition is 1.6-3.8. Examples of oxidizing agents are perborate, bromate, permanganate, nitrite, nitrate and chlorate, preferably added as an alkali metal or ammonium salt. The preferred oxidising agents are hydrogen peroxide and dichromate, preferably added as an aqueous solution of chromic acid and calcium carbonate or an aqueous solution of potassium dichromate and calcium acetate. A preferred coating composition comprises (a) 5-550 g/l of solid resin dispersed in the composition, (b) 0.4-5 g/l of fluoride ion, (c) hydrogen peroxide or dichromate present in amount of 0.01-0.2 g/m equivalent per litre of composition, and (d) hydrogen ion in amount sufficient to impart a pH of 1.6-3.8 to the composition. Further optional ingredients include coalescing agent, preferably ethylene glycol mono-butyl ether, a wetting agent preferably a non-ionic or anionic wetting agent, water-dispersable pigment, a chelating agent. The metal surface may be ferrous metal, zinc or a zinc-coated ferrous metal surface, optionally having a previous non-siccative coating applied on it, e.g. a phosphate, chromate, oxalate, oxide (anodized or chemically-converted) coating. The synthetic resin may be fused after the rinse. The rinse solution may contain sufficient chromium to reduce the gloss of the coating.
GB2731872A
1971-06-14
1972-06-12
Process for rinsing coated metal surfaces
Expired
GB1349826A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US15299371A
1971-06-14
1971-06-14
Publications (1)
Publication Number
Publication Date
GB1349826A
true
GB1349826A
(en)
1974-04-10
Family
ID=22545336
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2731872A
Expired
GB1349826A
(en)
1971-06-14
1972-06-12
Process for rinsing coated metal surfaces
Country Status (12)
Country
Link
JP
(1)
JPS5315093B1
(en)
BE
(1)
BE784838A
(en)
BR
(1)
BR7203792D0
(en)
CA
(1)
CA1039129A
(en)
DE
(1)
DE2229018A1
(en)
ES
(1)
ES403825A1
(en)
FR
(1)
FR2142452A5
(en)
GB
(1)
GB1349826A
(en)
IT
(1)
IT959312B
(en)
NL
(1)
NL151015B
(en)
SE
(1)
SE379504B
(en)
ZA
(1)
ZA723900B
(en)
1972
1972-06-07
ZA
ZA723900A
patent/ZA723900B/en
unknown
1972-06-12
GB
GB2731872A
patent/GB1349826A/en
not_active
Expired
1972-06-13
BR
BR003792/72A
patent/BR7203792D0/en
unknown
1972-06-13
SE
SE7207746A
patent/SE379504B/xx
unknown
1972-06-13
IT
IT68892/72A
patent/IT959312B/en
active
1972-06-13
CA
CA144,599A
patent/CA1039129A/en
not_active
Expired
1972-06-14
JP
JP5931772A
patent/JPS5315093B1/ja
active
Pending
1972-06-14
FR
FR7221464A
patent/FR2142452A5/fr
not_active
Expired
1972-06-14
NL
NL727208133A
patent/NL151015B/en
unknown
1972-06-14
DE
DE19722229018
patent/DE2229018A1/en
active
Pending
1972-06-14
ES
ES403825A
patent/ES403825A1/en
not_active
Expired
1972-06-14
BE
BE784838A
patent/BE784838A/en
not_active
IP Right Cessation
Also Published As
Publication number
Publication date
CA1039129A
(en)
1978-09-26
NL151015B
(en)
1976-10-15
ES403825A1
(en)
1975-05-01
BE784838A
(en)
1972-10-02
SE379504B
(en)
1975-10-13
NL7208133A
(en)
1972-12-18
DE2229018A1
(en)
1972-12-21
JPS5315093B1
(en)
1978-05-22
IT959312B
(en)
1973-11-10
ZA723900B
(en)
1973-04-25
BR7203792D0
(en)
1973-05-10
FR2142452A5
(en)
1973-01-26
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Legal Events
Date
Code
Title
Description
1974-08-21
PS
Patent sealed
1974-09-25
429A
Application made for amendment of specification (sect. 29/1949)
1975-01-02
429H
Application (made) for amendment of specification now open to opposition (sect. 29/1949)
1975-05-14
429D
Case decided by the comptroller ** specification amended (sect. 29/1949)
1980-03-12
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1983-05-25
732
Registration of transactions, instruments or events in the register (sect. 32/1977)
1988-02-03
PCNP
Patent ceased through non-payment of renewal fee
