Patent US3617367A successfully refreshed from Google Patents.
US3617367A
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Polyisocyanate-polyamine coating composition
Assignee: Pacific Vegetable Oil Corp
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Filing: 1968-01-11
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Granted: 1971-11-02
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Expires: 1988-01-11
Abstract
Abstract A cured coating comprising the reaction of the product between a polyamine and certain polyisocyanates, including polyester polyisocyanates and aromatic and aliphatic isocyanates, with the ratio of amine groups to polyisocyanate groups lying to the range of 3:1 to 1:3. Also a two-system spray system for forming rapid cure coatings of that type.
Inventors
- 👤 Lowell O Cummings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3225; C08G18/40; C08G18/60; C08G18/603; C08G18/70; C08G18/72; C08G18/80; C08G18/8003; C08G18/8051; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/56; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31591; Y10T428/31605
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
21 words
The coating of claim 1 wherein said polyamine is a Schiff''s base reaction product of the tung-acrolein adduct and triethylene tetramine.
Claim 2
Dependent Claim
22 words
The coating of claim 1 wherein the equivalents of the amine groups and the isocyanate groups are present in approximately equal amounts.
Claim 3
Dependent Claim
20 words
The coating of claim 1 wherein there is also a pigment carried by at least one of (a) or (b).
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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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |