Patent US3882064A successfully refreshed from Google Patents.
US3882064A
Expired / Lapsed
US
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Epoxy resin powder coating composition
Assignee: EIDP Inc
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Filing: 1973-12-27
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Granted: 1975-05-06
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Expires: 1993-12-27
Abstract
Abstract WHEREIN R is an alkylene group of 1-4 carbon atoms and n is a positive integer; B. a second epoxy resin of said formula but different from (A); C. a polyethylene wax; D. a catalyst of tri(dimethyl aminomethyl)phenol or a fatty acid salt thereof; and E. dicyandiamide. The composition is useful as a coating for exteriors or interiors of food and beverage containers and for appliances such as refrigerators, dishwashers, washers, and dryers and the like. The powder coating composition comprises finely divided particles that have a diameter of 1-100 microns wherein the powder particles are an intimately mixed blend of A. an epoxy resin of the formula
Inventors
- 👤 Walter Pregmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:17
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4021; C08G59/20; C08G59/22; C08G59/226; C09; C09D; C09D163/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A POWDER COATING COMPOSITION COMPRISING FINELY DIVIDED PARTICLES HAVING A PARTICLE SIZE OF 1-100 MICRONS; WHEREIN THE POWDER PARTICLES ARE AN INTIMATELY MIXED BLEND OF A BINDER CONSISTING ESSENTIALLY OF A. 72.6-90.0 PERCENT BY WEIGHT OF AN EPOXY RESIN OF THE FORMULA
Claim 2
Dependent Claim
42 words
A POWDER COATING COMPOSITION COMPRISING FINELY DIVIDED PARTICLES HAVING A PARTICLE SIZE OF 1-100 MICRONS; WHEREIN THE POWDER PARTICLES ARE AN INTIMATELY MIXED BLEND OF A BINDER CONSISTING ESSENTIALLY OF A. 72.6-90.0 PERCENT BY WEIGHT OF AN EPOXY RESIN OF THE FORMULA
Claim 3
Dependent Claim
17 words
The powder coating composition of claim 1 containing pigment in a pigment/binder ratio of 2/100 to 65/100.
Claim 4
Dependent Claim
22 words
The powder coating composition of claim 1 containing 0.1-1.0% by weight of a flow-control agent of ethyl cellulose, polyacrylate or methylphenol silicone.
Claim 5
Dependent Claim
16 words
The powder coating composition of claim 3 in which the flow control agent is a polyacrylate.
Claim 6
Dependent Claim
16 words
The powder coating composition of claim 1 containing 0.05-0.5 percent by weight of finely divided silica.
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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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |