US4134816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for cationic electrodeposition
Assignee: PPG Industries Inc
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Filing: 1978-03-07
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Granted: 1979-01-16
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Expires: 1998-03-07
Abstract
Abstract Aqueous coating compositions comprising a blocked organic polyisocyanate and a resin containing active hydrogen atoms and quaternary ammonium groups are disclosed. The resin is prepared by the reaction of a polyepoxide with an amine-acid salt. These compositions deposit on the cathode to provide coatings having excellent properties.
Inventors
- 👤 Joseph F. Bosso
- 👤 Lance C. Sturni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:43
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C09D5/4442; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4028
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
100 words
A method of coating a conductive substrate serving as a cathode which comprises passing electric current between an anode and said cathode in electrical contact with a water-dispersed composition comprising an aqueous dispersion of: (A) a quaternary ammonium salt group solubilized organic resin containing active hydrogen atoms which is the reaction product of: (1) a tertiary amine-acid salt, and (2) a polyepoxide; (B) a capped organic polyisocyanate stable at room temperature in the presence of said resin (A) and reactive with the active hydrogens of said resin (A) at elevated temperatures, to form a cured product cured through urethane crosslinks.
Claim 2
Independent Claim
100 words
A method of coating a conductive substrate serving as a cathode which comprises passing electric current between an anode and said cathode in electrical contact with a water-dispersed composition comprising an aqueous dispersion of: (A) a quaternary ammonium salt group solubilized organic resin containing active hydrogen atoms which is the reaction product of: (1) a tertiary amine-acid salt, and (2) a polyepoxide; (B) a capped organic polyisocyanate stable at room temperature in the presence of said resin (A) and reactive with the active hydrogens of said resin (A) at elevated temperatures, to form a cured product cured through urethane crosslinks.
Claim 3
Dependent Claim
46 words
A method according to claim 1 wherein (B) is the reaction product of an organic polyisocyanate and a compound selected from the group consisting of a phenol, an aliphatic alkyl monoalcohol, a cycloaliphatic alkyl monoalcohol, an aromatic alkyl monoalcohol, a ketoxime, a tertiary hydroxylamine, and caprolactam.
Claim 4
Dependent Claim
21 words
A method according to claim 1 wherein (B) is the reaction product of an organic polyisocyanate and an aliphatic alkyl monoalcohol.
Claim 5
Dependent Claim
27 words
A method according to claim 1 wherein (A) and (B) are present in a ratio of about 0.1 to about 1.0 blocked isocyanate groups per active hydrogen.
Claim 6
Dependent Claim
23 words
A method according to claim 1 wherein (A) is an adduct of a tertiary amine-acid salt and a polyglycidyl ether of a polyphenol.
Claim 7
Dependent Claim
46 words
A method according to claim 5 wherein (B) is the reaction product of an organic polyisocyanate and a compound selected from the group consisting of an aliphatic alkyl monoalcohol, a cycloaliphatic alkyl monoalcohol, an aromatic alkyl monoalcohol, a phenol, a ketoxime, a tertiary hydroxylamine, and caprolactam.
Claim 8
Dependent Claim
27 words
A method according to claim 5 wherein (A) and (B) are present in a ratio of about 0.1 to about 1.0 blocked isocyanate groups per active hydrogen.
Claim 9
Dependent Claim
23 words
A method according to claim 1 wherein (A) is an adduct of a tertiary amine-acid salt and a polyglycidyl ether of Bisphenol A.
Claim 10
Dependent Claim
46 words
A method according to claim 8 wherein (B) is the reaction product of an organic polyisocyanate and a compound selected from the group consisting of an aliphatic alkyl monoalcohol, a cycloaliphatic alkyl monoalcohol, an aromatic alkyl monoalcohol, a phenol, a ketoxime, a tertiary hydroxylamine, and caprolactam.
Claim 11
Dependent Claim
25 words
A method according to claim 1 wherein (A) is an epoxy group-containing adduct of a tertiary amine-acid salt and a polyglycidyl ether of a polyphenol.
Claim 12
Dependent Claim
31 words
The method of claim 1 wherein the resin (A) has a backbone derived from the interpolymerization of an olefinically unsaturated glycidyl compound and at least one other copolymerizable olefinically unsaturated monomer.
Claim 13
Dependent Claim
40 words
The method of claim 11 wherein the resin (A) has a backbone derived from the interpolymerization of an olefinically unsaturated glycidyl compound, a hydroxyalkyl ester of an acrylic or methacrylic acid, and at least one other copolymerizable olefinically unsaturated monomer.
References Cited (Backward Citations)
US3928156A
Cited
US4031050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-01-15 | 1982-07-17 | 1983-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-15 | 1986-07-17 | 1987-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-15 | 1990-07-17 | 1991-01-16 | $7700.00 | Window Closed / Lapsed |