Patent US4420574A successfully refreshed from Google Patents.
US4420574A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ungelled polyepoxide-polyoxyalkylenepolyamine resins, aqueous dispersions thereof, and their use in cationic electrodeposition
Assignee: PPG Industries Ohio Inc
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Filing: 1982-09-20
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Granted: 1983-12-13
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Expires: 2002-09-20
Abstract
Abstract Ungelled resins, aqueous dispersions of cationic resins, coating compositions, and electrodeposition using the resinous coating compositions are disclosed. The resins are formed from reacting polyepoxides with polyoxyalkylenepolyamines. The aqueous dispersions are prepared by at least partially neutralizing the resins to provide cationic groups and dispersing the cationic resins in aqueous medium. When added to cationic electrode-positable coating compositions, such as high throwpower compositions, the ungelled cationic resins provide better appearing, more flexible and water-resistant electrodeposited coatings.
Inventors
- 👤 Thomas C. Moriarity
- 👤 William J. Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:03
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/443; C08; C08L; C08L63/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
An aqueous resinous dispersion which contains from: (A) 0.5 to 40 percent by weight of an ungelled resin formed from reacting: (i) a polyepoxide with (ii) a polyoxyalkylenepolyamine; the ratio of equivalents of active hydrogens in (ii), with primary amine groups being considered monofunctional, to equivalents of epoxy in (i) being within the range of 1.20 to 1.70:1, the reaction product being at least partially neutralized with acid to provide cationic groups, (B) 60 to 99.5 percent by weight of an additional cationic resin different from (A) and which is electrodepositable on a cathode; the percentages by weight being based on total weight of (A) plus (B).
Claim 2
Dependent Claim
107 words
An aqueous resinous dispersion which contains from: (A) 0.5 to 40 percent by weight of an ungelled resin formed from reacting: (i) a polyepoxide with (ii) a polyoxyalkylenepolyamine; the ratio of equivalents of active hydrogens in (ii), with primary amine groups being considered monofunctional, to equivalents of epoxy in (i) being within the range of 1.20 to 1.70:1, the reaction product being at least partially neutralized with acid to provide cationic groups, (B) 60 to 99.5 percent by weight of an additional cationic resin different from (A) and which is electrodepositable on a cathode; the percentages by weight being based on total weight of (A) plus (B).
Claim 3
Dependent Claim
17 words
The aqueous dispersion of claim 1 wherein the polyepoxide is a polyglycidyl ether of a cyclic polyol.
Claim 4
Dependent Claim
13 words
The aqueous dispersion of claim 2 wherein the cyclic polyol is a diol.
Claim 5
Dependent Claim
36 words
The aqueous dispersion of claim 3 wherein the polyglycidyl ether of the cyclic diol is a polyglycidyl ether of bisphenol A or hydrogenated bisphenol A having a molecular weight within the range of 340 to 2000.
Claim 6
Dependent Claim
13 words
The aqueous dispersion of claim 1 in which the polyoxyalkylenepolyamine is a polyoxypropylenepolyamine.
Claim 7
Dependent Claim
13 words
The aqueous dispersion of claim 5 in which the polyoxypropylenepolyamine is a diamine.
Claim 8
Dependent Claim
21 words
The aqueous dispersion of claim 1 in which the polyoxyalkylenepolyamine has a molecular weight within the range of 137 to 3600.
Claim 9
Dependent Claim
20 words
The aqueous dispersion of claim 7 in which the polyoxyalkylenepolyamine has an amine equivalent weight of about 69 to 1800.
Claim 10
Dependent Claim
25 words
The aqueous dispersion of claim 1 containing 0.5 to 50 percent by weight of (A) plus (B) based on total weight of the aqueous dispersion.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-12 | 1987-06-13 | 1987-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-12 | 1991-06-13 | 1991-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-12 | 1995-06-13 | 1995-12-13 | $7700.00 | Window Closed / Lapsed |