Patent US4356276A successfully refreshed from Google Patents.
US4356276A
Expired / Lapsed
US
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Binder combination for cathodically depositable paints
Assignee: Allnex Austria GmbH
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Filing: 1981-09-15
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Granted: 1982-10-26
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Expires: 2001-09-15
Abstract
Abstract Binder combinations for the formulation of cathodic paints comprising blends of epoxy resins as follows: (A) 40 to 80% by weight of reaction products of epoxy acrylates with basic monoisocyanates; (B) 5 to 30% by weight of reaction products of epoxy amine adducts with unsaturated monoisocyanates, and (C) an epoxy resin modified with a semi-ester of a dicarboxylic acid anhydride and an N-hydroxyalkyloxazolidin and an amine, rendered water soluble through neutralization of the basic groups. The binder combinations as defined have enhanced throwing power and improved stability of the paint tank.
Inventors
- 👤 Helmut Honig
- 👤 Wolfgang Leitner
- 👤 Georg Pampouchidis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:47
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4473; C09D163/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
230 words
A binder combination for cationically dispositable paints based on modified epoxy resins comprising (A) 40 to 80% by weight of an epoxy resin having an epoxy equivalent of from 150 to 800, the epoxy groups of which are esterified with equimolar quantities of a member of the group consisting of acrylic acid; methacrylic acid; a semi-ester of a dicarboxylic acid anhydride and mixtures thereof, and a hydroxyalkyl(meth)acrylate, the free hydroxy groups thereof being reacted totally or partially with a reaction product obtained from equimolar quantities of toluene diisocyanate and a dialkanolamine; (B) 5 to 30% by weight of an epoxy resin having an expoxy equivalent of from 150 to 800, the epoxy groups of which are reacted with equimolar quantities of a member of the group consisting of a dialkylamine, a dialkanolamine and mixtures thereof, the free hydroxy groups thereof being reacted totally or partially with a reaction product of equimolecular amounts of toluene diisocyanate and hydroxyalkyl(meth)acrylate, and (C) 10 to 40% by weight of an epoxy resin having an epoxy equivalent of between 150 and 800, 30 to 60 mole % of the epoxy groups thereof being reacted with a semi-ester of a dicarboxylic acid anhydride and an N-2-hydroxyalkyloxazolidin, and 10to 50 mole % of the epoxy groups thereof being reacted with a primary and/or secondary amine, the unconsumed rest being reacted with a saturated and/or unsaturated monocarboxylic acid.
Claim 2
Dependent Claim
230 words
A binder combination for cationically dispositable paints based on modified epoxy resins comprising (A) 40 to 80% by weight of an epoxy resin having an epoxy equivalent of from 150 to 800, the epoxy groups of which are esterified with equimolar quantities of a member of the group consisting of acrylic acid; methacrylic acid; a semi-ester of a dicarboxylic acid anhydride and mixtures thereof, and a hydroxyalkyl(meth)acrylate, the free hydroxy groups thereof being reacted totally or partially with a reaction product obtained from equimolar quantities of toluene diisocyanate and a dialkanolamine; (B) 5 to 30% by weight of an epoxy resin having an expoxy equivalent of from 150 to 800, the epoxy groups of which are reacted with equimolar quantities of a member of the group consisting of a dialkylamine, a dialkanolamine and mixtures thereof, the free hydroxy groups thereof being reacted totally or partially with a reaction product of equimolecular amounts of toluene diisocyanate and hydroxyalkyl(meth)acrylate, and (C) 10 to 40% by weight of an epoxy resin having an epoxy equivalent of between 150 and 800, 30 to 60 mole % of the epoxy groups thereof being reacted with a semi-ester of a dicarboxylic acid anhydride and an N-2-hydroxyalkyloxazolidin, and 10to 50 mole % of the epoxy groups thereof being reacted with a primary and/or secondary amine, the unconsumed rest being reacted with a saturated and/or unsaturated monocarboxylic acid.
Claim 3
Dependent Claim
24 words
The binder combination of claim 1 wherein the epoxy groups of the epoxy resin of component (B) are also reacted with a monocarboxylic acid.
Claim 4
Dependent Claim
18 words
The binder combination of claim 2 wherein the said monocarboxylic acid of component (B) is a fatty acid.
Claim 5
Dependent Claim
10 words
The binder combination of claim 1 further including water-tolerant solvents.
Claim 6
Dependent Claim
13 words
The binder combination of claim 4 further including an inorganic or organic acid.
Claim 7
Dependent Claim
9 words
The binder combination of claim 5 further including water.
Claim 8
Dependent Claim
22 words
The binder combination of claim 1 wherein the epoxy resin of components (A), (B), and (C) is a Bisphenol-A based epoxy resin.
Claim 9
Dependent Claim
26 words
The binder combination of claim 1 wherein at least one of said epoxy resins of components (A), (B), and (C) is a Bisphenol-A based epoxy resin.
Claim 10
Dependent Claim
26 words
The binder combination of claim 1 wherein at least one of the epoxy resins of components (A), (B), and (C) is a phenol-novolak based epoxy resin.
Claim 11
Dependent Claim
26 words
The binder combination of claim 8 wherein at least one of said epoxy resins of components (A), (B), and (C) is a phenol-novolak based epoxy resin.
References Cited (Backward Citations)
US3373221A
Cited
US3478126A
Cited
US4035523A
Cited
US4162274A
Cited
JPS5310652A
Cited
EP0028401A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-25 | 1986-04-26 | 1986-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-25 | 1990-04-26 | 1990-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-25 | 1994-04-26 | 1994-10-26 | $7700.00 | Window Closed / Lapsed |