US3567797A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable compositions comprising (a) a bis(1,2 - epoxyalkyl) cycloaliphatic compound,(b) a polyether polyepoxide and (c) a curing agent
Assignee: Shell USA Inc
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Filing: 1968-12-09
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Granted: 1971-03-02
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Expires: 1988-12-09
Abstract
Abstract POLYMER COMPOSITIONS HAVING IMPROVED PHYSICAL PROPERTIES ARE OBTAINED BY MIXING A BIS(1,2-EPOXYALKYL)CYCLOALIPHATIC COMPOUND HAVING AT LEAST 5 CARBON ATOMS IN THE CARBOCYCLIC RING THEREOF WITH A POLYETHER POLYEPOXIDE POSSESSING MORE THAN ONE VIC-EPOXY GROUP. THE MIXTURE MAY BE CURED THROUGH THE USE OF CONVENTIONAL CURING AGENTS TO PRODUCE POLYMERIC COMPOSITIONS WHICH ARE USEFUL IN THE PREPARATION OF SURFACE COMPOSITIONS, CASTINGS, AND IMPREGNATING AND SEALING COMPOSITIONS.
Inventors
- 👤 Frank D Mango
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:58
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/24
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) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |