Patent US4346149A successfully refreshed from Google Patents.
US4346149A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water based aluminum paint
Assignee: Gulfko Inc
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Filing: 1980-05-19
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Granted: 1982-08-24
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Expires: 2000-05-19
Abstract
Abstract This invention relates to a water based aluminum paint, particularly for dark colored polyethylene film for outdoor agricultural uses. This paint has high reflectivity towards light, and is water and crack resistant. It contains aluminum paste or powder, mica as an extender, acrylic polymer, and water, together with a small quantity of a dispersant and antifoam. The acrylic polymer may be modified by the addition of minor amounts of alkyd resins, vinylacrylic copolymer, polyesters, and the like.
Inventors
- 👤 James E. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:46
CPC Classifications
A; A01; A01G; A01G9/00; A01G9/14; A01G9/1438; A01G13/00; A01G13/30; A01G13/32; A01G13/33; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; C09; C09D; C09D5/00; C09D5/004; C09D5/38; C08J2433/00; Y; Y02; Y02A; Y02A40/00; Y02A40/10; Y02A40/25; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A process for coating a plastic film with a water based aluminum paint which comprises preparing a paint by adding sequentially while stirring to water containing a small amount of a dispersant, aluminum paste or powder, finely divided mica, an acrylic polymer and an antifoamer in suitable amounts to form a paint, and coating the surface of a plastic film with said paint, said coating having high reflectivity toward heat and light, and being water resistant and crack resistant.
Claim 2
Dependent Claim
79 words
A process for coating a plastic film with a water based aluminum paint which comprises preparing a paint by adding sequentially while stirring to water containing a small amount of a dispersant, aluminum paste or powder, finely divided mica, an acrylic polymer and an antifoamer in suitable amounts to form a paint, and coating the surface of a plastic film with said paint, said coating having high reflectivity toward heat and light, and being water resistant and crack resistant.
Claim 3
Dependent Claim
24 words
The process of claim 1 including the step of adding a predried long oil alkyd resin as a last step to the paint mixture.
Claim 4
Dependent Claim
23 words
The process of claim 1 wherein the weight ratio of said aluminum paste or powder to the mica is about 5:0 to 5:1.
Claim 5
Dependent Claim
25 words
The process of claim 1 wherein the combined weight of aluminum powder or paste and mica is 9% to 12% by weight of the mixture.
Claim 6
Dependent Claim
25 words
The process of claim 1 wherein the combined weight of all polymeric and resinous materials is from 40% to 55% by weight of the mixture.
Claim 7
Dependent Claim
19 words
The process of claim 1 wherein the water content is from 35% to 50% by weight of the mixture.
Claim 8
Dependent Claim
13 words
The process of claim 1 wherein said plastic film is a polyethylene film.
Claim 9
Dependent Claim
15 words
The process of claim 7 wherein said plastic film is a dark colored polyethylene film.
Claim 10
Dependent Claim
86 words
The process of claim 1 wherein said acrylic polymer has approximately the following properties: ______________________________________
Appearance white milky liquid
Solids content, % 49.5 to 50.5
pH 9.0 to 10.0
Weight per gallon, lbs. 8.8
Bulking value of dry solids, gal/lb.
0.107
Minimum film-formation temperature °C.
7° to 10°
Tukon hardness (KHN) 1
Mechanical stability OK
(Waring Blender 5 min.)
Calcium ion stability OK
(mixed with a vol. 10% CaCl.sub.2)
Heat stability (100 hours at 140° C.)
OK
Freeze-thaw stability (5 cycles @ -15° C.)
OK
______________________________________
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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) | 1985-08-23 | 1986-02-22 | 1986-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-08-23 | 1990-02-22 | 1990-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-08-23 | 1994-02-22 | 1994-08-24 | $7700.00 | Window Closed / Lapsed |