US3711437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of aqueous dispersions having a high surface tension of carboxyl-group-containing synthetic rubber
Assignee: Huels AG
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Filing: 1969-12-10
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Granted: 1973-01-16
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Expires: 1989-12-10
Abstract
Abstract HIGH SURFACE TENSION AQUEOUS DISPERSIONS OF SYNTHETIC RUBBER CONTAINING CARBOXYL GROUPS ARE PREPARED BY POLYMERIZING A MONOMERIC MIXTURE OF A DIOLEFIN, A VINYL COMPOUND AND A MONETHYLENICALLY UNSATURATED CARBOXYLIC ACID IN THE AQUEOUS PHASE IN THE PRESENCE OF 0.025-0.1% OF A SULFONATE EMULSIFIER, 0.5-3.0% OF A POLYETHYLENE GLYCOL OF A MOLECULAR WEIGHT OF 300-3,000 AND 10**-2 TO 10**-5% OF IRON IONS, BY WEIGHT CALCULATED ON THE MIXTURE OF MONOMERS.
Inventors
- 👤 A Wieland
- 👤 G Schroeder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F36/00; C08F36/02; C08F36/04
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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |