US3736276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrocoating bath compositions
Assignee: Canada Wire and Cable Co Ltd
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Filing: 1970-11-06
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Granted: 1973-05-29
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Expires: 1990-11-06
Abstract
Abstract An electrocoating bath composition comprises a diluted aqueous solution or dispersion of a heat curable coating resin, suitably an epoxy ester resin, and a minor amount of water soluble, compatible resin which cures rapidly at temperatures substantially below the curing temperature of the coating resin, for example a water soluble phenolic resin, to improve the edge and corner coverage of objects coated by the composition.
Inventors
- 👤 F Crowne
- 👤 V Peer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4403; C09D5/4419; C09D5/4423; C09D5/4426; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/40
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
34 words
The composition of claim 1 wherein the phenolic resin is used in an amount of from about 1 to about 5 parts by weight, per 100 parts by weight of heat curable coating resin.
Claim 2
Dependent Claim
50 words
The composition of claim 1 wherein the epoxy ester resin is that produced by esterifying a solid epoxy resin derived from epichlorohydrin and P,P''-isopropylidenediphenol with dehydrated castor oil fatty acids, and solubilized by acidifying with an organic acid to increase the acid number thereof and partially neutralizing with an amine.
Claim 3
Dependent Claim
32 words
The composition of claim 2 wherein the phenolic resin is that produced by reacting phenol with excess formaldehyde under aqueous alkaline conditions, until the resin is in its water soluble Resol stage.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |