GB1354531A - Process for making aqueous electrodepositable polymer compositions - Google Patents

Process for making aqueous electrodepositable polymer compositions

Info

Publication number
GB1354531A
GB1354531A GB2124071A GB2124071A GB1354531A GB 1354531 A GB1354531 A GB 1354531A GB 2124071 A GB2124071 A GB 2124071A GB 2124071 A GB2124071 A GB 2124071A GB 1354531 A GB1354531 A GB 1354531A
Authority
GB
United Kingdom
Prior art keywords
polymer
acid
aqueous
water
composition
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
GB2124071A
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.)
General Electric Co
Original Assignee
General Electric 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 General Electric Co filed Critical General Electric Co
Publication of GB1354531A publication Critical patent/GB1354531A/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
    • C09D5/4461—Polyamides; Polyimides
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D13/00—Electrophoretic coating characterised by the process
    • C25D13/04—Electrophoretic coating characterised by the process with organic material
    • C25D13/06—Electrophoretic coating characterised by the process with organic material with polymers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Wood Science & Technology (AREA)
  • Electrochemistry (AREA)
  • Metallurgy (AREA)
  • Paints Or Removers (AREA)
  • Polyamides (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

Abstract

1354531 Aqueous polymer compositions; ethylene-maleic anhydride copolymer salts GENERAL ELECTRIC CO 19 April 1971 [12 March 1970] 21240/71 Headings C3R and C3P [Also in Division C7B An aqueous electrocoating polymer composition is made by a process comprising the steps of (a) reacting a polymer having recurrent carboxyl groups and being selected from (1) polyimide prepolymers, (2) polyesters, (3) polyesterimides, and (4) ethylene-maleic anhydride polymers with a nitrogen-containing base to form a water-soluble carboxylate salt of the polymer; (b) either before, during or after the treatment with said base adding sufficient water to the system to dissolve said salt formed in step (a); and (c) adding an acid to the aqueous mixture obtained as a result of steps (a) and (b) to adjust the pH thereof so as to precipitate part of the polymer, whereby a dispersion phase (i.e. containing suspended polymer particles) and a solution phase of the polymer are formed. The acid of step (c) must have the effect of controlling the ratio of fixed (COOH + COO<SP>-</SP>) of the polymer to nitrogen-containing base but must not create cleavage of the polymer. Suitable acids are acetic, formic, butyric, propionic and benzoic acids. By adjusting the pH, the ratio of solution phase to dispersion phase is adjusted and this controls how thick a film can be electrodeposited on a metal substrate anode. The pH may be adjusted to 3À0 to 6À5. Electrodeposition may be on to a Cu wire, e.g. using a degreased, acid-cleaned, water-rinsed Cu wire anode immersed in the electrocoating composition together with carbon cathodes, the composition being stirred by a magnetic stirring bar. Deposited resins may be thermally cured. The above-specified polymers 1 to 4 are of the same kinds as, and are made similarly to, those disclosed in Specification 1,354,532 (see the abridgment of that Specification). Polyimide prepolymers are referred to therein as polyamic acids.
GB2124071A 1970-03-12 1971-04-19 Process for making aqueous electrodepositable polymer compositions Expired GB1354531A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1881670A 1970-03-12 1970-03-12

Publications (1)

Publication Number Publication Date
GB1354531A true GB1354531A (en) 1974-06-05

Family

ID=21789915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2124071A Expired GB1354531A (en) 1970-03-12 1971-04-19 Process for making aqueous electrodepositable polymer compositions

Country Status (4)

Country Link
JP (3) JPS569559B1 (en)
DE (1) DE2111584C2 (en)
FR (1) FR2081894B1 (en)
GB (1) GB1354531A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3121306A1 (en) * 1981-05-29 1982-12-23 Dr. Beck & Co Ag, 2000 Hamburg METHOD FOR PRODUCING AQUEOUS HEAT-CURABLE ELECTRO-INSULATING LACQUER AND THE USE THEREOF
JPH0776440B2 (en) * 1986-10-29 1995-08-16 三井東圧化学株式会社 Metal coating method

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1030204A (en) * 1962-03-28 1966-05-18 Ford Motor Co Electropainting process and paint binder concentrate composition therefor
DE1546943B1 (en) * 1962-07-30 1970-01-02 Glasurit Werke Max Winkelmann Ag Electrophoretic deposition of synthetic resins on metals or other electrically conductive objects
GB972169A (en) * 1962-08-13
GB1030425A (en) * 1963-04-26 1966-05-25 Ici Ltd Electrophoretic coating process
JPS5574849A (en) * 1978-11-30 1980-06-05 Matsushita Electric Works Ltd Metallic mold
JPS5574848A (en) * 1978-12-04 1980-06-05 Nhk Spring Co Ltd Method of providing hole in synthetic resin mold product

Also Published As

Publication number Publication date
FR2081894B1 (en) 1974-03-22
JPS569393A (en) 1981-01-30
DE2111584A1 (en) 1971-10-21
JPS568436A (en) 1981-01-28
DE2111584C2 (en) 1985-05-09
FR2081894A1 (en) 1971-12-10
JPS569559B1 (en) 1981-03-02
JPS59525B2 (en) 1984-01-07

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years