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US3635809A Expired / Lapsed US ⏱️ 0.0 years remaining

Electrodeposition coating process of vinylidene fluoride resin

Assignee: Kureha Corp
•
Filing: 1969-04-28
•
Granted: 1972-01-18
•
Expires: 1989-04-28
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Abstract

Abstract An electrodeposition process which comprises electrophoretically depositing a vinylidene fluoride resin on an electrical conductor from a solvent mixture consisting essentially of a vinylidene fluoride resin powder dispersion in an organic liquid dispersing medium, said organic liquid dispersing medium comprising an organic liquid having a dielectric constant greater than 3.8 and being selected from the group consisting of organic liquids having a solubility parameter of from about 7.0 to about 13.0, exhibiting a low degree of hydrogen bonding, a solubility parameter of from about 7.7 to about 12.5 exhibiting a middle degree of hydrogen bonding, a solubility parameter of from about 9.6 to about 11.8 exhibiting a high degree of hydrogen bonding, and mixtures thereof.

Inventors

  • 👤 Shigeru Seki
  • 👤 Kouji Sato

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 08:50
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 51 words
The process of claim 1, wherein said vinylidene fluoride resin powder dispersion in said organic liquid dispersing medium further contains at least one additive selected from the group consisting of pigments and fillers, the amount of said additive being less than 30 percent based on the amount of vinylidene fluoride resin.
Claim 2
Dependent Claim 26 words
The process of claim 2, wherein said additive is present in an amount of less than 15 percent based on the amount of vinylidene fluoride resin.
Claim 3
Dependent Claim 20 words
The process of claim 2 wherein said additive is selected from the group consisting of titanium dioxide and carbon black.
Claim 4
Dependent Claim 18 words
The process of claim 2, wherein the particle size of said additive ranges from 0.05 to 10.0 microns.
Claim 5
Dependent Claim 15 words
The process of claim 1 which further comprises drying and heating said electrophorEtically deposited resin.
Claim 6
Dependent Claim 31 words
The process of claim 6, wherein said drying occurs at a temperature of from 80* to 280* C., and said heating occurs at a temperature of from 180* to 350* C.
Claim 7
Dependent Claim 20 words
The process of claim 1, wherein said vinylidene fluoride powder has a particle size of from 0.01 to 10 microns.
Claim 8
Dependent Claim 15 words
The process of claim 8, wherein said particle size ranges from 0.1 to 1.0 microns.
Claim 9
Dependent Claim 12 words
The process of claim 1 wherein said electrical conductor is an anode.
Claim 10
Dependent Claim 52 words
The process of claim 1 wherein said dispersion medium is selected from the group consisting of n-octyl alcohol, n-amyl alcohol, isobutyl alcohol, butyl acetate, isoamyl acetate, methyl acetate, ethyl acetate, cyclohexanone, methyl-n-propyl ketone, diisobutyl ketone, methyl ethyl ketone, acetone, acetophenone, butylcellosolve, epichlorohydrin, chloroform, 1,2-dichloroethane, 1,1,2-trichloroethane, tetrachloroethane, nitrobenzene, chlorobenzene, o-dichlorobenzene and mixtures thereof.
Claim 11
Dependent Claim 19 words
The process of claim 1, wherein the vinylidene fluoride resin has a specific viscosity of from 0.6 to 2.0.
Claim 12
Dependent Claim 18 words
The process of claim 1, wherein said organic liquid dispersing medium has a maximum dielectric constant of 150.

References Cited (Backward Citations)

US2820752A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-01-17 1975-07-19 1976-01-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-01-17 1979-07-19 1980-01-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-01-17 1983-07-19 1984-01-18 $7700.00 Window Closed / Lapsed

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