Patent US2985617A successfully refreshed from Google Patents.
US2985617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polymer of 2 to 3 carbon atoms
Assignee: Monsanto Chemicals Ltd
•
Filing: 1955-09-02
•
Granted: 1961-05-23
•
Expires: 1975-09-02
Abstract
No abstract record available.
Inventors
- 👤 Ival O Salyer
- 👤 Allen S Kenyon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:04
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/005; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
THE HYDROCARBON POLYMER OBTAILNED BY POLYMERIZING AT LEAST ONE UNSATURATED OLEFINIC HYDROCARBON MONOMER OF 2 TO 3 CARBON ATOMS IN THE PRESENCE OF A ZIEGLER POLYMERIZATION CATALYST, ADAPTED FOR THE LOW PRESSURE POLYMERIZATION OF ETHYLENE, WHEREIN SAID POLYMER CONTAINS TRACE QUANTITIES OF ZIEGLER CATALYST RESIDUES, STABILIZED AGAINST ADVERSE EFFECTS OF THERMAL PROCESSING BY A SMALL BUT PROTECTIVE AMOUNT OF A POLYVINYL CHLORIDE HEAT STABILIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS OF FATTY ACIDS, EPOXIDIZED ORGANIC OILS AD ESTERS, EPOXY RESILNS, ORGANO-TIN COMPOUNDS, ORGANO-LEAD COMPOUNDS, ORGANIC PHOSPHITES AND SUBSTITUTED UREAS.
Claim 2
Dependent Claim
94 words
THE HYDROCARBON POLYMER OBTAILNED BY POLYMERIZING AT LEAST ONE UNSATURATED OLEFINIC HYDROCARBON MONOMER OF 2 TO 3 CARBON ATOMS IN THE PRESENCE OF A ZIEGLER POLYMERIZATION CATALYST, ADAPTED FOR THE LOW PRESSURE POLYMERIZATION OF ETHYLENE, WHEREIN SAID POLYMER CONTAINS TRACE QUANTITIES OF ZIEGLER CATALYST RESIDUES, STABILIZED AGAINST ADVERSE EFFECTS OF THERMAL PROCESSING BY A SMALL BUT PROTECTIVE AMOUNT OF A POLYVINYL CHLORIDE HEAT STABILIZING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALINE EARTH METAL SALTS OF FATTY ACIDS, EPOXIDIZED ORGANIC OILS AD ESTERS, EPOXY RESILNS, ORGANO-TIN COMPOUNDS, ORGANO-LEAD COMPOUNDS, ORGANIC PHOSPHITES AND SUBSTITUTED UREAS.
References Cited (Backward Citations)
US2734892A
Cited
US2075543A
Cited
US2160172A
Cited
US2462331A
Cited
GB597031A
Cited
GB584620A
Cited
US2448799A
Cited
US2507142A
Cited
US2674586A
Cited
US2664378A
Cited
US2647296A
Cited
US2716096A
Cited
US2641596A
Cited
US2758981A
Cited
US2838477A
Cited
US2721189A
Cited
US2834768A
Cited
US2827447A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-22 | 1964-11-21 | 1965-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-22 | 1968-11-21 | 1969-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-22 | 1972-11-21 | 1973-05-23 | $7700.00 | Window Closed / Lapsed |