US4144159A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrodeposition of N-heterocyclic-containing resins
Assignee: PPG Industries Inc
•
Filing: 1978-04-28
•
Granted: 1979-03-13
•
Expires: 1998-04-28
Abstract
Abstract Water-dispersible resins formed from polyglycidyl ethers of polyphenols and N-heterocyclic compounds and containing cationic salt groups are disclosed. The resins can be dispersed or dissolved in water, and can be applied to a wide variety of different substrates by electrodeposition, depositing on the cathode to provide superior corrosion-resistant coatings.
Inventors
- 👤 Joseph F. Bosso
- 👤 Nicholas T. Castellucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:04
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C09D5/4434; C09D5/4442; C09D5/4449; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/5046; C08G59/5053
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
98 words
In a method of coating a conductive substrate serving as a cathode, which method comprises passing electric current between an anode and said cathode in electrical contact with a water-dispersed composition, the improvement wherein the water-dispersed composition is a water-dispersible resin which is electrodepositable on the cathode and which contains in the resin molecule amine salt groups and/or onium salt groups, said resin being prepared from polyglycidyl ethers of polyphenols and which contains in the resin molecule N-heterocyclic moieties obtained by reacting said polyepoxide with an N-heterocyclic material containing a 5 or 6-membered ring and containing ##STR20## moieties.
Claim 2
Dependent Claim
98 words
In a method of coating a conductive substrate serving as a cathode, which method comprises passing electric current between an anode and said cathode in electrical contact with a water-dispersed composition, the improvement wherein the water-dispersed composition is a water-dispersible resin which is electrodepositable on the cathode and which contains in the resin molecule amine salt groups and/or onium salt groups, said resin being prepared from polyglycidyl ethers of polyphenols and which contains in the resin molecule N-heterocyclic moieties obtained by reacting said polyepoxide with an N-heterocyclic material containing a 5 or 6-membered ring and containing ##STR20## moieties.
Claim 3
Dependent Claim
29 words
The method of claim 1 in which the cataphoretic resin contains onium salt groups selected from the class consisting of quaternary ammonium, quaternary phosphonium and ternary sulfonium salt groups.
Claim 4
Dependent Claim
62 words
The method of claim 2 in which the cataphoretic resin is formed from reacting: (A) a polyepoxide having a 1,2-epoxy equivalency greater than 1, (B) an N-heterocyclic material containing a 5 or 6-membered ring and containng ##STR21## moieties, (C) a reactant selected from the group consisting of: (1) an amine acid salt, (2) a sulfide acid mixture, (3) a phosphine acid mixture.
Claim 5
Dependent Claim
12 words
The method of claim 1 in which the polyphenol is Bisphenol A.
Claim 6
Dependent Claim
13 words
The method of claim 1 in which the N-heterocyclic material contains ##STR22## moieties.
Claim 7
Dependent Claim
36 words
The method of claim 1 in which the N-heterocyclic material has the following structural formula: ##STR23## wherein X is a bivalent radical which is necessary to complete a 5-membered or 6-membered unsubstituted or substituted heterocyclic ring.
Claim 8
Dependent Claim
51 words
The method of claim 1 in which the N-heterocyclic material is of the formula: ##STR24## wherein R 1 and R 2 each represent a hydrogen atom, or an aliphatic, cycloaliphatic, araliphatic or aromatic hydrocarbon radical, or wherein R 1 and R 2 together form a bivalent aliphatic or cycloaliphatic hydrocarbon radical.
Claim 9
Dependent Claim
68 words
The method of claim 1 in which the N-heterocyclic material is of the formula: ##STR25## wherein X 1 and X 2 independently of one another each denote a bivalent radical which is necessary to complete a 5-membered or 6-membered unsubstituted or substituted heterocyclic ring and Y represents a bivalent aliphatic, cycloaliphatic, aryl, or araliphatic radical; Y also represents moieties containing ester linkages, amido linkages and hydroxy-containing polyether moieties.
Claim 10
Dependent Claim
18 words
The method of claim 1 in which the water-dispersible, cataphoretic resin is in combination with a blocked isocyanate.
Claim 11
Dependent Claim
17 words
The method of claim 1 in which the cataphoretic resin contains blocked isocyanates in the resin molecule.
References Cited (Backward Citations)
US3640910A
Cited
US3839252A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-12 | 1982-09-11 | 1983-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-12 | 1986-09-11 | 1987-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-12 | 1990-09-11 | 1991-03-13 | $7700.00 | Window Closed / Lapsed |