US4179425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-crosslinking cationic polyurethane based electrodepositable binders
Assignee: Allnex Austria GmbH
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Filing: 1978-02-02
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Granted: 1979-12-18
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Expires: 1998-02-02
Abstract
Abstract Binders for cathodically depositable aqueous coating compositions comprising the reaction product of (A) one mole polyisocyanate with (B) at least one mole dialkylalkanolamine and a monohydroxyalkyl(meth)acrylate and/or monohydroxyalkoxy(meth)acrylate and/or a monohydroxyallylether of a polyol. Optionally, there can be included a saturated and/or unsaturated fatty alcohol or fatty acid. The binders have an NCO-value of substantially zero; a molecular weight of from about 500 to 5000, and in each 1000 molecular weight unit a basic content of from about 0.5 to 3 and a double bond content of from about 0.5 to 4. The binders in coating compositions cure at relatively low temperatures and relatively short curing times to provide films having excellent resistance to water, chemicals, and corrosion.
Inventors
- 👤 Georgios Pampouchidis
- 👤 Helmut Honig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:51
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4407; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/67; C08G18/671
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
90 words
Thermosetting binders which are water-dilutable and suitable for cathodically depositable coatings comprising the reaction product of (A) 1 mole polyisocyanate, (B) at least 1 mole dialkylalkanolamine and (C) at least one member of the group consisting of monohydroxyalkyl(meth)acrylate, monohydroxyalkoxy(meth)acrylate, and monohydroxyallylether of a polyol, said reaction product having an NCO-value of substantially zero, a molecular weight of from about 500 to about 5000, a basic content of about 0.5 to 3 for each 1000 molecular weight unit of binder, and a double bond content of from about 0.5 to 4.
Claim 2
Dependent Claim
90 words
Thermosetting binders which are water-dilutable and suitable for cathodically depositable coatings comprising the reaction product of (A) 1 mole polyisocyanate, (B) at least 1 mole dialkylalkanolamine and (C) at least one member of the group consisting of monohydroxyalkyl(meth)acrylate, monohydroxyalkoxy(meth)acrylate, and monohydroxyallylether of a polyol, said reaction product having an NCO-value of substantially zero, a molecular weight of from about 500 to about 5000, a basic content of about 0.5 to 3 for each 1000 molecular weight unit of binder, and a double bond content of from about 0.5 to 4.
Claim 3
Dependent Claim
19 words
The thermosetting binders of claim 1 wherein the basic content of said binders is derived from basic nitrogen atoms.
Claim 4
Dependent Claim
16 words
The thermosetting binders of claim 2 wherein the basic content is from about 0.7 to 2.
Claim 5
Dependent Claim
17 words
The thermosetting binders of claim 1 wherein the double bond content is from about 0.7 to 3.5.
Claim 6
Dependent Claim
17 words
The thermosetting binders of claim 1 including a fatty alcohol having from 1 to 24 carbon atoms.
Claim 7
Dependent Claim
11 words
The thermosetting binders of claim 5 wherein the alcohol is unsaturated.
Claim 8
Dependent Claim
11 words
The thermosetting binders of claim 5 wherein the alcohol is saturated.
Claim 9
Dependent Claim
17 words
The thermosetting binders of claim 1 including a fatty acid having from 1 to 24 carbon atoms.
Claim 10
Dependent Claim
12 words
The thermosetting binders of claim 8 wherein the fatty acid is saturated.
Claim 11
Dependent Claim
12 words
The thermosetting binders of claim 8 wherein the fatty acid is unsaturated.
Claim 12
Dependent Claim
19 words
An aqueous solution of the thermosetting binders of claim 1 wherein the binders are neutralized with a neutralizing acid.
Claim 13
Dependent Claim
121 words
Process of providing coating compositions which will cathodically deposit when used in an electrodeposition process including reacting at a temperature of from about 20° to 80° C. (A) 1 mole of a polyisocyanate, (B) at least 1 mole of a dialkylalkanolamine and (C) a member of the group consisting of monohydroxyalkyl(meth)acrylate, monohydroxyalkoxy(meth)acrylate, and monohydroxyallylether of a polyol, said reaction being carried out to an NCO-value of substantially zero to provide a product having a molecular weight of about 500 to about 5000, a basic content of from about 0.5 to 3, and a double bond content of from about 0.5 to 4 for each 1000 molecular weight units of binder, and neutralizing said reaction product with an inorganic or organic acid.
Claim 14
Dependent Claim
121 words
Process of providing coating compositions which will cathodically deposit when used in an electrodeposition process including reacting at a temperature of from about 20° to 80° C. (A) 1 mole of a polyisocyanate, (B) at least 1 mole of a dialkylalkanolamine and (C) a member of the group consisting of monohydroxyalkyl(meth)acrylate, monohydroxyalkoxy(meth)acrylate, and monohydroxyallylether of a polyol, said reaction being carried out to an NCO-value of substantially zero to provide a product having a molecular weight of about 500 to about 5000, a basic content of from about 0.5 to 3, and a double bond content of from about 0.5 to 4 for each 1000 molecular weight units of binder, and neutralizing said reaction product with an inorganic or organic acid.
References Cited (Backward Citations)
US3948739A
Cited
US3939126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-17 | 1983-06-18 | 1983-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-17 | 1987-06-18 | 1987-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-17 | 1991-06-18 | 1991-12-18 | $7700.00 | Window Closed / Lapsed |