US4174332A
Expired / Lapsed
US
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Self-crosslinking resin emulsions for cathodically depositable coating compositions
Assignee: Allnex Austria GmbH
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Filing: 1978-02-02
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Granted: 1979-11-13
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Expires: 1998-02-02
Abstract
Abstract Aqueous emulsions of binders for cathodically depositable aqueous coating compositions comprising emulsions of (A) 98 to 50 percent by weight of at least one water-soluble self-crosslinking cationic resin which is water-dilutable upon partial or total neutralization with an inorganic or organic acid and having at least 0.5 basic nitrogen atoms in 1000 molecular weight units and a double bond number of at least 0.5; and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polycondensation resin or polymerization resin having a double bond number of at least 0.8. Optionally, the water-insoluble self-crosslinking resin can include basic character but insufficient to provide water solubility. The emulsions have excellent stability without use of other emulsifiers even in substantially diluted form usual for electrodeposition baths. The emulsions when used in coating compositions provide films which have good adhesion characteristics, cure at relatively low temperatures and relatively short curing times to provide films having excellent resistance to water, chemicals, and corrosion.
Inventors
- 👤 Helmut Honig
- 👤 Georgios Pampouchidis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:33
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4473; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
86 words
Emulsions of binders which are cathodically depositable in an electrodeposition system comprising (A) 98 to 50 percent by weight of a water-soluble self-crosslinking cationic resin water-dilutable upon partial or total neutralization with an inorganic or organic acid, said resin containing on an average at least 0.5 basic nitrogen atoms in 1000 molecular weight units and a double bond number of at least 0.5; and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polymeric resin having a double bond number of at least 0.8.
Claim 2
Dependent Claim
86 words
Emulsions of binders which are cathodically depositable in an electrodeposition system comprising (A) 98 to 50 percent by weight of a water-soluble self-crosslinking cationic resin water-dilutable upon partial or total neutralization with an inorganic or organic acid, said resin containing on an average at least 0.5 basic nitrogen atoms in 1000 molecular weight units and a double bond number of at least 0.5; and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polymeric resin having a double bond number of at least 0.8.
Claim 3
Dependent Claim
34 words
The emulsion of claim 1 wherein component (A) has on an average 0.8 to 1.5 basic nitrogen atoms in 1000 molecular weight units and a double bond number of from about 0.8 to 2.5.
Claim 4
Dependent Claim
19 words
The emulsion of claim 2 wherein the double bond number of component (B) is from about 1 to 4.
Claim 5
Dependent Claim
13 words
The emulsion of claim 3 wherein the polymeric resin is a polyaddition resin.
Claim 6
Dependent Claim
25 words
The emulsion of claim 1 wherein component (B) includes basic nitrogen atoms but insufficient to provide water-solubility upon neutralization with an inorganic and/or organic acid.
Claim 7
Dependent Claim
36 words
The emulsion of claim 5 wherein component (B) has a double bond number of at least 0.8 and a basic nitrogen atoms content on an average of from 0.3 to 1.7 in 1000 molecular weight units.
Claim 8
Dependent Claim
108 words
The process of providing a coating composition which will cathodically deposit when used in an electrodeposition process comprising the steps of (1) providing an emulsion of (A) 98 to 50 percent by weight of a water-soluble self-crosslinking cationic resin water-dilutable upon partial or total neutralization with inorganic or organic acids, said resin containing on an average a basic nitrogen content of at least 0.5 and a double bond number of at least 0.5, and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polymeric resin having a double bond number of at least 0.8; and (2) neutralizing said reaction product with an inorganic or organic acid.
Claim 9
Dependent Claim
108 words
The process of providing a coating composition which will cathodically deposit when used in an electrodeposition process comprising the steps of (1) providing an emulsion of (A) 98 to 50 percent by weight of a water-soluble self-crosslinking cationic resin water-dilutable upon partial or total neutralization with inorganic or organic acids, said resin containing on an average a basic nitrogen content of at least 0.5 and a double bond number of at least 0.5, and (B) 2 to 50 percent by weight of a water-insoluble self-crosslinking polymeric resin having a double bond number of at least 0.8; and (2) neutralizing said reaction product with an inorganic or organic acid.
Claim 10
Dependent Claim
13 words
The emulsion of claim 1 wherein said polymeric resin is a polycondensation resin.
Claim 11
Dependent Claim
13 words
The process of claim 7 wherein said polymeric resin is a polycondensation resin.
References Cited (Backward Citations)
US3799854A
Cited
US3804786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-12 | 1983-05-14 | 1983-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-12 | 1987-05-14 | 1987-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-12 | 1991-05-14 | 1991-11-13 | $7700.00 | Window Closed / Lapsed |