US4596844A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-hardenable resin composition
Assignee: NOF Corp
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Filing: 1984-09-28
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Granted: 1986-06-24
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Expires: 2004-09-28
Abstract
Abstract The present invention relates to a water-dispersible self-hardenable resin composition, and particularly to a self-hardenable resin composition, which has a low-temperature hardenability and is adapted for the cationic electrodeposition painting wherein a material to be painted is used as a cathode. The present invention provides a self-hardenable resin composition consisting essentially of a Michael type addition reaction product consisting of 65-95% by weight (in solid base) of a polyamine resin having amino groups and/or imino groups and 35-5% by weight of an ethylenically unsaturated compound having an amine-imido group.
Inventors
- 👤 Akira Ohsawa
- 👤 Syuichi Manabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:43
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
44 words
A self-hardenable resin composition consisting essentially of a Michael type addition reaction product consisting of 65-95% by weight (in solid base) of a polyamine resin having amino groups and/or imino groups and 5-35% by weight of an ethylenically unsaturated compound having an amine-imido group.
Claim 2
Dependent Claim
44 words
A self-hardenable resin composition consisting essentially of a Michael type addition reaction product consisting of 65-95% by weight (in solid base) of a polyamine resin having amino groups and/or imino groups and 5-35% by weight of an ethylenically unsaturated compound having an amine-imido group.
Claim 3
Dependent Claim
29 words
A self-hardenable resin composition according to claim 1, wherein the polyamine resin is a reaction product of a polyepoxide with a ketimine-blocked amino group-containing polyamine or a primary amine.
Claim 4
Dependent Claim
65 words
A self-hardenable resin composition according to claim 1, wherein the ethylenically unsaturated compound having an amine-imido group is respresented by the following general formula: ##STR4## wherein n is an integer of 1 or 2, R 1 represents a residue of mono- or di-basic ethylenically unsaturated carboxylic acid, and R 2 , R 3 and R 4 represent alkyl or hydroxyalkyl groups having 1-6 carbon atoms.
Claim 5
Dependent Claim
29 words
A self-hardenable resin composition according to claim 1, wherein the ethylenically unsaturated compound having an amine-imido group is introduced into the polyamine resin by a Michael type addition reaction.
Claim 6
Dependent Claim
53 words
A self-hardenable resin composition according to claim 1, wherein the amine-imido group in the Michael type addition reaction product is converted into an isocyanate group through a thermal decomposition or a rearrangement, and the addition reaction product is crosslinked or thermally hardened by the action of the isocyanate group as a hardening agent.
Claim 7
Dependent Claim
41 words
A self-hardenable resin composition according to claim 1, wherein the amine-imido group in the Michael type addition reaction product is neutralized with an acid to form a quarternary ammonium base, whereby the addition reaction product is dispersed in an aqueous medium.
Claim 8
Dependent Claim
37 words
A self-hardenable resin composition according to claim 1, wherein the self-hardenable resin composition is neutralized with an acid and dispersed in an aqueous medium so as to be used as a resin composition for cationic electrodeposition painting.
References Cited (Backward Citations)
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US3925349A
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US3888827A
Cited
US4151148A
Cited
US4198331A
Cited
US4476271A
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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) | 1989-06-23 | 1989-12-23 | 1990-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-23 | 1993-12-23 | 1994-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-23 | 1997-12-23 | 1998-06-24 | $7700.00 | Window Closed / Lapsed |