GB1033833A - A method for coating metal substrates in aqueous electrodepositing baths - Google Patents

A method for coating metal substrates in aqueous electrodepositing baths

Info

Publication number
GB1033833A
GB1033833A GB45586/63A GB4558663A GB1033833A GB 1033833 A GB1033833 A GB 1033833A GB 45586/63 A GB45586/63 A GB 45586/63A GB 4558663 A GB4558663 A GB 4558663A GB 1033833 A GB1033833 A GB 1033833A
Authority
GB
United Kingdom
Prior art keywords
bath
composition
fatty acid
acid ester
acid
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
GB45586/63A
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of GB1033833A publication Critical patent/GB1033833A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09D5/44—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications
    • C09D5/4419—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for electrophoretic applications with polymers obtained otherwise than by polymerisation reactions only involving carbon-to-carbon unsaturated bonds
    • C09D5/4423—Polyesters, esterified polyepoxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/04—Processes using organic exchangers
    • B01J39/07—Processes using organic exchangers in the weakly acidic form

Abstract

In coating a metal substrate by passing an electric current between conductive anode and cathode in contact with an aqueous composition comprising a partially neutralized reaction product of a drying oil fatty acid ester or a semidrying oil fatty acid ester and an anhydride of an a :b -ethylenically unsaturated dicarboxylic acid and/or the acid thereof and/or fumaric acid, a portion of the composition is withdrawn from the electrodeposition bath and treated in a separate zone with a suitable cation exchange resin for a time sufficient to reduce the pH to 6 to 8.5 and is then returned to the bath. Additional coating material may be added to the bath as required. Neutralization of the reaction product may be effected with metal hydroxides or preferably ammonia or amines including tertiary amines. An ethylenically unsaturated monomer such as a styrene, acrylate, methacrylate, acrylonitrile or a diolefine may be reacted with the acid or anhydride before the reaction with the fatty acid ester. Pigments surface active agents and anti-oxidants may be included in the bath composition. The preferred cation exchange resins are weak carboxylic acid resins. As described the bath is agitated by external circulation and coatings are electrodeposited on phosphatized steel as anode and the deposited coating is baked. A pair of ion exchange resin treatment stations may be arranged in parallel in the bath composition regeneration path, one station being regenerated while the other is used to treat the bath composition.
GB45586/63A 1962-12-12 1963-11-19 A method for coating metal substrates in aqueous electrodepositing baths Expired GB1033833A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US24412662A 1962-12-12 1962-12-12
FR955760A FR1376990A (en) 1962-12-12 1963-12-02 Process for treating aqueous coating compositions

Publications (1)

Publication Number Publication Date
GB1033833A true GB1033833A (en) 1966-06-22

Family

ID=32395599

Family Applications (1)

Application Number Title Priority Date Filing Date
GB45586/63A Expired GB1033833A (en) 1962-12-12 1963-11-19 A method for coating metal substrates in aqueous electrodepositing baths

Country Status (2)

Country Link
FR (1) FR1376990A (en)
GB (1) GB1033833A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162542A (en) * 1984-06-05 1986-02-05 Carrs Paints Limited Electro painting apparatus; degassifying electropainting bath

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2162542A (en) * 1984-06-05 1986-02-05 Carrs Paints Limited Electro painting apparatus; degassifying electropainting bath

Also Published As

Publication number Publication date
FR1376990A (en) 1964-10-31

Similar Documents

Publication Publication Date Title
US2915444A (en) Process for cleaning and plating ferrous metals
GB1096067A (en) Electrodeposition of resinous, film-forming coatings
ES448837A1 (en) Acid zinc electroplating bath and process
JPS5719395A (en) Pretreatment of special steel for electroplating gold directly
US2800447A (en) Control of ph in electrodeposition of polytetrafluoroethylene
ATE5597T1 (en) PROCESS FOR COATING AN ELECTRICALLY CONDUCTIVE SUBSTRATE.
US3970537A (en) Electrolytic treating apparatus
GB1033833A (en) A method for coating metal substrates in aqueous electrodepositing baths
GB1041761A (en) Improvements in the coating of metals
US3898145A (en) Process for applying contrasting coatings to a workpiece
US1787477A (en) Process for chromium plating
US3880727A (en) Method of pretreating bands and sheets of steel for one-layer enameling, and electrolytic bath for use in connection therewith
US3773629A (en) Method of enameling strips and sheets of steel
GB1076817A (en) Coating electrically conductive e.g., metallic articles with organic coating material by electrodeposition
US3565782A (en) Electrocoating process
GB1165805A (en) A process for the production of Coatings on the Surface of Steel Strip
US3725218A (en) Process for pretreating decarbonized steel to be directly enamelled
US4000053A (en) Method for treatment of aluminum substrate
DE1421960A1 (en) Method of surface treatment of a low carbon steel for electroplating
US2606147A (en) Electrodeposition of arsenic
JPS5591993A (en) Production of colored galvanized product
DE1646031C3 (en) Process for the preparation of a bath for electrophoresis
GB1152954A (en) Improvements relating to Anti-Corrosion Treatment of Iron and Steel by an Electrodeposition Process
JPS6136080B2 (en)
GB1120016A (en) Treatment of electrodepositable coating compositions