US2935489A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for polymerizing ethylenically unsaturated organic compounds with the aid of hydroxyl amine derivatives
Assignee: Evonik Operations GmbH
•
Filing: 1956-02-21
•
Granted: 1960-05-03
•
Expires: 1976-02-21
Abstract
No abstract record available.
Inventors
- 👤 Bader Erich
- 👤 Schweitzer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:17
CPC Classifications
C; C08; C08F; C08F4/00; C08F283/00; C08F283/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN THE PREPARATION OF A POLYMER BY CATALYTIC POLYMERIZATION OF A POLYMERIZABLE MASS COMPRISING AT LEAST ONE POLYMERIZABLE COMPOUND CONTAINING A >C=CH2 GROUP WITH A CATALYTIC AMOUNT OF A REDOX SYSTEM CATALYST CONTAINING AT LEAST ONE PEROXIDE COMPOUND AND AT LEAST ONE ORGANIC SULFUR CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFINIC ACID COMPOUNDS, AOXYSULFONES, SULFOXYLATES, A-AMINO SULFONES, THIOETHERS AND MERCAPTANS, THE STEP WHICH COMPRISES CONDUCTING THE POLYMERIZATION OF SAID MASS IN THE PRESENCE OF A CATALYTIC AMOUNT OF A HYDROXYLAMINE DERIVATIVE OF THE FORMULA
Claim 2
Dependent Claim
86 words
IN THE PREPARATION OF A POLYMER BY CATALYTIC POLYMERIZATION OF A POLYMERIZABLE MASS COMPRISING AT LEAST ONE POLYMERIZABLE COMPOUND CONTAINING A >C=CH2 GROUP WITH A CATALYTIC AMOUNT OF A REDOX SYSTEM CATALYST CONTAINING AT LEAST ONE PEROXIDE COMPOUND AND AT LEAST ONE ORGANIC SULFUR CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF SULFINIC ACID COMPOUNDS, AOXYSULFONES, SULFOXYLATES, A-AMINO SULFONES, THIOETHERS AND MERCAPTANS, THE STEP WHICH COMPRISES CONDUCTING THE POLYMERIZATION OF SAID MASS IN THE PRESENCE OF A CATALYTIC AMOUNT OF A HYDROXYLAMINE DERIVATIVE OF THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |