US3629201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyesterimides from dicyano diamide-hydrazine reaction products
Assignee: Axalta Coating Systems Germany GmbH and Co KG
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Filing: 1969-09-03
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Granted: 1971-12-21
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Expires: 1989-09-03
Abstract
Abstract A PROCESS FOR THE PRODUCTION OF POLYESTER RESINS CONTAINING 5-MEMBERED IMIDE RINGS FORMED WHEN HEATED TO TEMPERATURES ABOVE 250*C. FROM POLYHYDRIC ALCOHOLS, POLYVALENT AROMATIC CARBOXYLIC ACIDS AND POLYVALENT AMINO COMPOUNDS, OPTIONALLY IN ADMIXTURE WITH OTHER ALIPHATIC AND/OR AROMATIC POLYVALENT CARBOXYLIC ACIDS, OR FROM REACTIVE DERIVATIVES OF THESE COMPOUNDS. A PORTION OF THE POLYVALENT AMINO COMPOUNDS IS THE REACTION PRODUCT OF DICYANO DIAMIDE WITH HYDRAZINE.
Inventors
- 👤 Arnold Dobbelstein
- 👤 Hans-Dieter Hille
- 👤 Horst Holfort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:49
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306; H01B3/307; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/31504; Y10T428/31551; Y10T428/31605
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |