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US3663389A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of electrodepositing novel coating

Assignee: Wyeth Holdings LLC
•
Filing: 1970-04-17
•
Granted: 1972-05-16
•
Expires: 1990-04-17
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Abstract

Abstract A process for electrocoating metal comprising immersing said metal in an aqueous dispersion of a mixture of from about 5 percent to about 40 percent, by weight, of (A) a mixture of substantially water-insoluble, substantially fully etherified tetramethylol guanamines and correspondingly from about 95 percent to about 60 percent, by weight, of (B) a water dispersible non-gelled polymeric material carrying an ionic charge which is heat reactive with (A) wherein said percentages by weight, total 100 percent and are based on the total solids weight of (A) and (B), and subjecting the aqueous dispersion to electrophoresis in order to deposit the mixture of (A) and (B) on the metal as an adherent film, is disclosed.

Inventors

  • 👤 Jerry Norman Koral
  • 👤 Werner Joseph Blank

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 11:28
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4484

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 26 words
A process according to claim 1 in which the aqueous dispersion is alkaline and in which the water dispersible, non-gelled, polymeric material carries an anionic charge.
Claim 2
Dependent Claim 15 words
The process according to claim 2 in which said anionic, polymeric material contains carboxyl groups.
Claim 3
Dependent Claim 15 words
The process according to claim 2 in which said anionic, polymeric material contains hydroxyl groups.
Claim 4
Dependent Claim 15 words
The process according to claim 2 in which said anionic, polymeric material contains amide groups.
Claim 5
Dependent Claim 21 words
A process according to claim 1 wherein said dispersion contains, in addition to (A) and (B), (C) at least one pigment.

References Cited (Backward Citations)

US3449228A Cited
US3471388A Cited
US3450660A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-05-16 1975-11-15 1976-05-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-05-16 1979-11-15 1980-05-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-05-16 1983-11-15 1984-05-16 $7700.00 Window Closed / Lapsed

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