US4442247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous coating compositions
Assignee: Nippon Paint Co Ltd
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Filing: 1982-08-25
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Granted: 1984-04-10
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Expires: 2002-08-25
Abstract
Abstract An aqueous coating composition comprising from 45 to 98 parts by weight (solids) of aqueous resin(s) and from 2 to 55 parts by weight (solids) of finely divided water-insoluble resin(s), in which at least a part of said aqueous resin is selected from special type of cationic resins. The resins may have mutually reactive functional groups.
Inventors
- 👤 Shinichi Ishikura
- 👤 Kazunori Kanda
- 👤 Shohachiro Yamaguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:11
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/02; C09D201/00; Y; Y10; Y10S; Y10S524/00; Y10S524/901
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
84 words
An aqueous coating composition comprising from 45 to 98 parts by weight (solids) of aqueous resin(s) and from 2 to 55 parts by weight (solids) of finely divided water-insoluble resin(s), in which at least a part of said aqueous resin is selected from the cationic resins having amino group(s), the amino-nitrogen equivalent weight being 40 to 2000, and fulfilling the requirement that the water tolerance is greater than 4 and the surface tension for a 1% w/w aqueous solution is less than 51 dyne/cm.
Claim 2
Dependent Claim
84 words
An aqueous coating composition comprising from 45 to 98 parts by weight (solids) of aqueous resin(s) and from 2 to 55 parts by weight (solids) of finely divided water-insoluble resin(s), in which at least a part of said aqueous resin is selected from the cationic resins having amino group(s), the amino-nitrogen equivalent weight being 40 to 2000, and fulfilling the requirement that the water tolerance is greater than 4 and the surface tension for a 1% w/w aqueous solution is less than 51 dyne/cm.
Claim 3
Dependent Claim
23 words
A composition according to claim 1, which comprises at least 2 resins having functional groups which are mutually reactive at an elevated temperature.
Claim 4
Dependent Claim
33 words
A composition according to claim 1, wherein the cationic resin is selected from amine adduct of epoxy resin, amine adduct of modified epoxy resin, amino-bearing acrylic resin, amino-bearing polyester resin and polyethyleneimine resin.
Claim 5
Dependent Claim
29 words
A composition according to claim 1, 2 or 3, wherein the water-insoluble resin is selected from epoxy, polyester, alkyd, phenol, urethane, amino, vinyl, cellulose, polyamide, polycarbonate and fluorine resins.
Claim 6
Dependent Claim
24 words
A composition according to claim 4, wherein the mean diameter of the particles of the finely divided water-insoluble resin is from 0.5 to 100μ.
Claim 7
Dependent Claim
20 words
A composition according to claim 5, wherein the water-insoluble resin has a glass transition point of more than 40° C.
Claim 8
Dependent Claim
31 words
A composition according to claim 6 which comprises from 50 to 90 parts by weight (solids) of aqueous resin(s) and from 10 to 50 parts by weight (solids) of water-insoluble resin(s).
Claim 9
Dependent Claim
13 words
A composition according to claim 7, which additionally comprises a polar organic solvent.
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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) | 1987-04-10 | 1987-10-10 | 1988-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-10 | 1991-10-10 | 1992-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-10 | 1995-10-10 | 1996-04-10 | $7700.00 | Window Closed / Lapsed |