US4312795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paint composition comprising powder paint dispersed in aqueous resin solution
Assignee: Nissan Motor Co Ltd
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Filing: 1980-06-11
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Granted: 1982-01-26
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Expires: 2000-06-11
Abstract
Abstract A paint composition comprising a powder paint uniformly dispersed in an aqueous solution of a water soluble carboxylated resin. Use is made of a powder paint having a mean particle size of 1-100 microns and preferably comprising a thermosetting resin as the vehicle. This paint composition contains no surfactant but, nevertheless, features high stability of the dispersion phase and can provide paint films of excellent resistance to water. This paint composition may utilize recovered waste powder paint, i.e. a mixture of differently colored powder paints, preferably with the addition of a black pigment such as carbon black.
Inventors
- 👤 Michiichi Taguchi
- 👤 Kunio Funabiki
- 👤 Masao Nakazima
- 👤 Hisao Nunokawa
- 👤 Tadashi Ikemi
- 👤 Masataka Kimura
- 👤 Naoki Shibata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:58
CPC Classifications
C; C09; C09D; C09D17/00; C09D17/001; C08; C08J; C08J11/00; C09B; C09B67/00; C09B67/0071; C09D201/00; C09D201/02; C09D201/06; C09D201/08; Y; Y10; Y10S; Y10S260/00; Y10S260/26; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
84 words
A paint composition of an aqueous slurry type, comprising: an aqueous solution of a water soluble carboxyl-containing resin; and a powder paint uniformly dispersed in said aqueous solution, the particles of said powder paint having a mean particle size in the range from 1 micron to 100 microns, said powder paint being a mixture of at least two kinds of powder paints different in color and comprising a thermosetting resin as a vehicle; said carboxyl-containing resin having a good affinity with said powder paint.
Claim 2
Dependent Claim
84 words
A paint composition of an aqueous slurry type, comprising: an aqueous solution of a water soluble carboxyl-containing resin; and a powder paint uniformly dispersed in said aqueous solution, the particles of said powder paint having a mean particle size in the range from 1 micron to 100 microns, said powder paint being a mixture of at least two kinds of powder paints different in color and comprising a thermosetting resin as a vehicle; said carboxyl-containing resin having a good affinity with said powder paint.
Claim 3
Dependent Claim
33 words
A paint composition according to claim 1, wherein the weight ratio of said powder paint to said water soluble carboxyl-containing resin is in the range from 0.1:1 to 100:1 on the solid basis.
Claim 4
Dependent Claim
19 words
A paint composition according to claim 2, wherein said weight ratio is in the range from 1:1 to 50:1
Claim 5
Dependent Claim
38 words
A paint composition according to claim 2, wherein said water soluble carboxyl-containing resin is selected from the group consisting of carboxylated drying oil resins, carboxylated alkyd resins, carboxylated epoxy resins, carboxylated liquid polybutadiene resins and carboxylated acrylic resins.
Claim 6
Dependent Claim
32 words
A paint composition according to claim 4, further comprising a basic compound as a neutralizing agent in such a quantity that the pH of the paint composition is not lower than 7.0.
Claim 7
Dependent Claim
30 words
A paint composition according to claims 2,4 or 5, wherein the thermosetting resin is selected from the group consisting of thermosetting epoxy resins, thermosetting polyester resins and thermosetting acrylic resins.
Claim 8
Dependent Claim
34 words
A paint composition according to claim 2, wherein said aqueous solution comprises water and a hydrophilic organic solvent, the weight ratio of said organic solvent to said powder paint being not greater than 0.5:1.
Claim 9
Dependent Claim
19 words
A paint composition according to claim 1, wherein said powder paint is a mixture of recovered waste powder paints.
Claim 10
Dependent Claim
34 words
A paint composition according to claims 1 or 2, further comprising a black-colored pigment uniformly dispersed in said aqueous solution, the weight ratio of said pigment to said powder paint being at least 0.03:1.
Claim 11
Dependent Claim
26 words
A paint composition according to claim 9, wherein said weight ratio of said pigment to said powder paint is in the range from 0.05:1 to 0.2:1.
Claim 12
Dependent Claim
13 words
A paint composition according to claim 9, wherein said pigment is carbon black.
Claim 13
Dependent Claim
16 words
A paint composition according to claim 1 wherein said carboxyl-containing resin is a maleated polybutadiene resin.
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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) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |