US4442248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous coating compositions
Assignee: Nippon Paint Co Ltd
•
Filing: 1982-09-03
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Granted: 1984-04-10
•
Expires: 2002-09-03
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 amphoteric resins having both carboxyl and amino groups. The resins may have mutually reactive functional groups.
Inventors
- 👤 Kazunori Kanda
- 👤 Shinichi Ishikura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:12
CPC Classifications
C; C09; C09D; C09D201/00; C09D5/00; C09D5/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
69 words
An aqueous coating composition comprising from 45 to 98 parts by weight as solids of at least one aqueous resin and from 2 to 55 parts by weight as solids of at least one finely divided water-insoluble resin, in which at least a part of said aqueous resin is selected from amphoteric resins having 0.2 to 4 m mol/g carboxyl groups and 0.01 to 3 m mol/g amino groups.
Claim 2
Dependent Claim
69 words
An aqueous coating composition comprising from 45 to 98 parts by weight as solids of at least one aqueous resin and from 2 to 55 parts by weight as solids of at least one finely divided water-insoluble resin, in which at least a part of said aqueous resin is selected from amphoteric resins having 0.2 to 4 m mol/g carboxyl groups and 0.01 to 3 m mol/g amino groups.
Claim 3
Dependent Claim
23 words
A composition according to claim 1, which comprises at least two resins having functional groups which are mutually reactive at an elevated temperature.
Claim 4
Dependent Claim
18 words
A composition according to claim 1, wherein the amphoteric resin is selected from acrylic resin and alkyd resin.
Claim 5
Dependent Claim
25 words
A composition according to claim 1, wherein the water-insoluble resin is selected from epoxy, polyester, alkyd, phenol, urethane, amino, vinyl, cellulose, polyamide, and polycarbonate resins.
Claim 6
Dependent Claim
24 words
A composition according to claim 1, wherein the mean diameter of the particles of the finely divided water-insoluble resin is from 0.1 to 100μ.
Claim 7
Dependent Claim
20 words
A composition according to claim 1, wherein the water-insoluble resin has a glass transition point of more than 40° C.
Claim 8
Dependent Claim
39 words
A composition according to claim 1 which comprises from 50 to 90 parts by weight as solid of at least one aqueous resin and from 10 to 50 parts by weight as solids of at least one water-insoluble resin.
Claim 9
Dependent Claim
13 words
A composition according to claim 1, 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 |