US4197224A
Expired / Lapsed
US
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Binders for cathodically depositable aqueous coating compositions employing an electrodeposition system
Assignee: Allnex Austria GmbH
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Filing: 1978-08-10
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Granted: 1980-04-08
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Expires: 1998-08-10
Abstract
Abstract Binders for cathodically depositable aqueous coating compositions comprising a basic binder system which is blend or partial reaction product of a basic macromolecular component and an acidic macromolecular component, the ratio between acid and basic binders as expressed by amine value and acid value ranges from 97:3 and 65:35, and included in the coating composition is at least one resin component modified with a compound of the general formula OCN--R[NH--CO--R'].sub.n wherein: n is 1-3; R is an aliphatic hydrocarbon radical, or an aromatic or cycloaliphatic nucleus, preferably substituted with alkyl groups, and R' is the moiety of a saturated or unsaturated alcohol; a phenol optionally substituted with alkyl radicals; a cyclic lactam; an aldoxime, a ketoxime; an acetoacetic acid ester, or a hydroxamic acid ester. The coating compositions, in addition to providing excellent cross-linking at normal curing temperatures and providing films with enhanced resistance to corrosion, have improved throwing power.
Inventors
- 👤 Gerhard Schmolzer
- 👤 Heiner Verdino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:57
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0833; C08G18/70; C08G18/72; C08G18/80; C08G18/8061; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4465; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
122 words
Cathodically depositable water dilutable coating compositions comprising a binder system including at least one macromolecular component, the macromolecular component or components of the binder system containing basic nitrogen groups and acid groups, the ratio of basic groups to acid groups as expressed by the ratio of amine value to acid value, in mg KOH/g, being between 97:3 and 65:35, and a macromolecular component of said binder system being reacted with a monoisocyanate compound having the formula OCN--R[NH--CO--R'].sub.n wherein: n is 1-3; R is an aliphatic hydrocarbon radical, or an aromatic or cycloaliphatic nucleus, and R' is the moiety of a saturated or unsaturated alcohol; a phenol; a cyclic lactam; an aldoxime, a ketoxime; an acetoacetic acid ester, or a hydroxamic acid ester.
Claim 2
Dependent Claim
122 words
Cathodically depositable water dilutable coating compositions comprising a binder system including at least one macromolecular component, the macromolecular component or components of the binder system containing basic nitrogen groups and acid groups, the ratio of basic groups to acid groups as expressed by the ratio of amine value to acid value, in mg KOH/g, being between 97:3 and 65:35, and a macromolecular component of said binder system being reacted with a monoisocyanate compound having the formula OCN--R[NH--CO--R'].sub.n wherein: n is 1-3; R is an aliphatic hydrocarbon radical, or an aromatic or cycloaliphatic nucleus, and R' is the moiety of a saturated or unsaturated alcohol; a phenol; a cyclic lactam; an aldoxime, a ketoxime; an acetoacetic acid ester, or a hydroxamic acid ester.
Claim 3
Dependent Claim
36 words
The coating composition of claim 1 wherein the binder system includes in admixture at least two macromolecular components with one of said macromolecular components containing basic nitrogen groups and a second macromolecular component containing acid groups.
Claim 4
Dependent Claim
20 words
The coating composition of claim 1 wherein the binder system includes a macromolecular component containing both acid and basic groups.
Claim 5
Dependent Claim
24 words
The coating composition of claim 1 wherein the binder system includes a reaction product of a basic macromolecular component and an acid macromolecular component.
Claim 6
Dependent Claim
23 words
The coating composition of claim 2 wherein the macromolecular component with acid groups contains reactive functional groups in addition to the acid groups.
Claim 7
Dependent Claim
16 words
The coating composition of claim 5 wherein said additional functional groups are hydroxyl or amine groups.
Claim 8
Dependent Claim
32 words
The coating composition of claim 3 wherein said macromolecular component contains the basic and acid groups in one resin molecule in the stated ratio and is further reacted with said monoisocyanate component.
Claim 9
Dependent Claim
26 words
The coating composition of claim 1 wherein said macromolecular component with basic nitrogen groups is the reaction product of an epoxy compound and a secondary amine.
Claim 10
Dependent Claim
28 words
The coating composition of claim 1 wherein the macromolecular component containing basic nitrogen atoms is the copolymer of a basic monomer containing ethylenically unsaturated units and a hydroxyalkyl(meth)acrylate.
Claim 11
Dependent Claim
24 words
The coating composition of claim 9 wherein the basic monomer is a member of the group consisting of N,N-dimethylaminoethyl(meth)acrylate; vinyl piridine; N-vinylimidzol, and N-vinylcarbazol.
Claim 12
Dependent Claim
23 words
The coating composition of claim 10 wherein the copolymer includes a member of the group consisting of (meth)acrylamide, styrene, vinyltoluol, and alpha-methyl styrene.
Claim 13
Dependent Claim
23 words
The coating composition of claim 1 wherein the macromolecular component is the reaction product of an anhydride group containing compound with an alkanolamine.
Claim 14
Dependent Claim
36 words
The coating composition of claim 1 wherein the acid groups are on a macromolecular component which is the reaction product of an alpha,beta-unsaturated dicarboxylic acid or anhydride with a compound having isolated or conjugated double bonds.
Claim 15
Dependent Claim
15 words
The coating composition of claim 1 wherein the acid groups are on a macromolecular polyester.
Claim 16
Dependent Claim
10 words
The coating composition of claim 1 including additional cross-linking agents.
Claim 17
Dependent Claim
18 words
The coating composition of claim 15 wherein the additional crosslinking agent is a phenol-formaldehyde condensate of the resol-type.
Claim 18
Dependent Claim
16 words
The coating composition of claim 1 wherein the said phenol is substituted with an alkyl group.
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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) | 1983-04-08 | 1983-10-08 | 1984-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-08 | 1987-10-08 | 1988-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-08 | 1991-10-08 | 1992-04-08 | $7700.00 | Window Closed / Lapsed |