Patent US3689448A successfully refreshed from Google Patents.
US3689448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of ethylene copolymer dispersions
Assignee: Hoechst AG
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Filing: 1970-10-09
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Granted: 1972-09-05
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Expires: 1990-10-09
Abstract
Abstract PROCESS FOR THE MANUFACTURE OF ETHYLENE COPOLYMER DISPERSIONS BY COPOLYMERIZING ETHYLENE WITH ALKALI METAL SALTS OF ONE OR MORE MONO-UNSATURATED ACYLASMIDE-N-SULFONIC ACIDS OF THE FORMULA R1CH=C(R2)CONH-SO3H, WHEREIN R1 AND R2 EACH REPRESENTS A HYDROGEN ATOM OR AN ORGANIC RADICAL CONTAINING 1 TO 10 CARBON ATOMS. IF NECESSARY, FURTHER COPOLYMERIZABLE COMPOUNDS MAY BE USED ADDITIONALLY. THE COPOLYMER DISPERSIONS OF THE INVENTION MAY BE USED FOR COATING PLASTICS MATERIALS, WOOD, PAPER AND THE LIKE AS WELL AS FOR IMPREGNATING OR FINISHING PAPER, FELT OR FIBROUS MATERIALS.
Inventors
- 👤 Harald Berger
- 👤 Herbert Bestian
- 👤 Helmut Korbanka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:50
CPC Classifications
C; C08; C08F; C08F28/00; C08F10/00
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 |