US4274989A
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US
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Cationic electrodepositable resin composition
Assignee: Kansai Paint Co Ltd
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Filing: 1979-09-25
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Granted: 1981-06-23
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Expires: 1999-09-25
Abstract
Abstract An acid-neutralizable cationic electrodepositable resin composition comprising as a film-forming ingredient the reaction product of (A) an epoxy resin or an adduct of an epoxy resin with a primary amine and/or a secondary amine, (B) an amino-terminated condensation product between a maleinized fatty acid and a polyamine, and (C) a partially blocked polyisocyanate compound. The composition can form a cathodically electrodepositable aqueous bath by being neutralized with an acid, and can give a coated film having superior surface smoothness and corrosion resistance with a high throwing power.
Inventors
- 👤 Akira Tominaga
- 👤 Reijiro Nishida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:56
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4419; C09D5/4465; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/0804; C08G18/0809; C08G18/0814; C08G18/28; C08G18/40; C08G18/4009; C08G18/4081; C08G18/58; C08G18/584; C08G18/64; C08G18/6415; C08G18/643; C08G59/00; C08G59/14; C08G59/1433; C08G59/1477; C08G59/18; C08G59/40; C08G59/50; C09D163/00; C09D5/443; C09D5/4434; Y; Y10; Y10S; Y10S524/00; Y10S524/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31529; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
69 words
The acid-neutralizable cationic electrodepositable resin composition comprising as a film-forming ingredient the reaction product of (A) an epoxy resin or an adduct of an epoxy resin with a primary amine and/or a secondary amine, (B) an amino-terminated condensation product obtained by reacting a maleinized fatty acid and a polyamine until the acid value of the reaction product becomes not more than 5, and (C) a partially blocked polyisocyanate compound.
Claim 2
Dependent Claim
69 words
The acid-neutralizable cationic electrodepositable resin composition comprising as a film-forming ingredient the reaction product of (A) an epoxy resin or an adduct of an epoxy resin with a primary amine and/or a secondary amine, (B) an amino-terminated condensation product obtained by reacting a maleinized fatty acid and a polyamine until the acid value of the reaction product becomes not more than 5, and (C) a partially blocked polyisocyanate compound.
Claim 3
Dependent Claim
26 words
The composition of claim 1 wherein said reaction product is obtained by reacting component (A) with component (C), and reacting the resulting product with component (B).
Claim 4
Dependent Claim
26 words
The composition of claim 1 wherein said reaction product is obtained by reacting components (A) with component (B), and reacting the reaction product with component (C).
Claim 5
Dependent Claim
26 words
The composition of claim 1 wherein said reaction product is obtained by reacting component (B) with component (C), and reacting the reaction product with component (A).
Claim 6
Dependent Claim
32 words
The composition of claim 1 wherein said reaction product is obtained by reacting (a) the reaction product of components (A) and (C), with (b) the reaction product of components (B) and (C).
Claim 7
Dependent Claim
26 words
The composition of claim 1 wherein said epoxy resin has an average molecular weight of 150 to 600, and an epoxy equivalent of 75 to 3000.
Claim 8
Dependent Claim
21 words
The composition of claim 1 wherein said primary amine or secondary amine is a mono- or di-functional aliphatic mono- or poly-amine.
Claim 9
Dependent Claim
26 words
The composition of claim 1 wherein said adduct of the epoxy resin and the primary and/or secondary amine has an amine value of 25 to 500.
Claim 10
Dependent Claim
30 words
The composition of claim 1 wherein said maleinized fatty acid is a drying oil fatty acid or a semidrying oil fatty acid maleinized with maleic anhydride or its reactive derivative.
Claim 11
Dependent Claim
28 words
The composition of claim 1 wherein said maleinized fatty acid has a total acid value of 250 to 500 and a half acid value of 150 to 350.
Claim 12
Dependent Claim
18 words
The composition of claim 1 wherein said amino-terminated condensation product has an amine value of 50 to 500.
Claim 13
Dependent Claim
19 words
The composition of claim 1 wherein said partially blocked polyisocyanate compound has an isocyanate value of 50 to 500.
Claim 14
Dependent Claim
23 words
The composition of claim 1 wherein said reaction product of components (A), (B) and (C) has an amine value of 25 to 250.
Claim 15
Dependent Claim
95 words
An aqueous bath for cationic electrodeposition, said bath consisting essentially of (i) as a film-forming ingredient, the reaction product of (A) an epoxy resin, or an adduct of an epoxy resin with a primary amine and/or a secondary amine, (B) an amino-terminated condensation product obtained by reacting a maleinized fatty acid and a polyamine until the acid value of the reaction product becomes not more than 5, and (C) a partially blocked polyisocyanate, (ii) a water-soluble aqueous inorganic or organic acid as a neutralization agent for said reaction product (i), and (iii) an aqueous medium.
Claim 16
Dependent Claim
95 words
An aqueous bath for cationic electrodeposition, said bath consisting essentially of (i) as a film-forming ingredient, the reaction product of (A) an epoxy resin, or an adduct of an epoxy resin with a primary amine and/or a secondary amine, (B) an amino-terminated condensation product obtained by reacting a maleinized fatty acid and a polyamine until the acid value of the reaction product becomes not more than 5, and (C) a partially blocked polyisocyanate, (ii) a water-soluble aqueous inorganic or organic acid as a neutralization agent for said reaction product (i), and (iii) an aqueous medium.
Claim 17
Dependent Claim
31 words
The aqueous bath of claim 14 which contains said reaction product (i) in a concentration, as solids, of 3 to 30% by weight based on the weight of the aqueous bath.
Claim 18
Dependent Claim
16 words
The aqueous bath of claim 14 which has a pH of about 3 to about 8.
Claim 19
Dependent Claim
11 words
The aqueous bath of claim 14 which further includes a pigment.
Claim 20
Dependent Claim
31 words
The composition according to claim 1 wherein said polyamine has 2 to 10 carbon atoms and 2 to 5 amino groups, at least one of which is a primary amino group.
Claim 21
Dependent Claim
22 words
The composition according to claim 18 wherein said polyamine has 2 to 8 carbon atoms and 1 to 3 primary amino groups.
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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) | 1984-06-22 | 1984-12-22 | 1985-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-06-22 | 1988-12-22 | 1989-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-06-22 | 1992-12-22 | 1993-06-23 | $7700.00 | Window Closed / Lapsed |