US3689450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing sealants from polybutadiene and mercapto hydroxy compounds
Assignee: Phillips Petroleum Co
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Filing: 1970-10-29
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Granted: 1972-09-05
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Expires: 1990-10-29
Abstract
Abstract A METHOD FOR PREPARING ADDUCTS OF POLYBUTADIENE AND MERCAPTO HYDROXY COMPOUNDS HAVING GOOD ADHESIVE PROPERTIES THROUGH THE REACTION OF MERCAPT O HYDROXY COMPOUNDS WITH LIQUID POLYBUTADIENE UNDER THE INFLUENCE OF A FREE RADICAL GENERATOR, WHEREIN SAID ADDUCTS ARE USEFUL AS THE BASE MATERIAL IN SEALANTS, ADHESIVES, PLASTICIZERS, PAINTS, AND THE LIKE.
Inventors
- 👤 Paul F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:37
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |