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 19:21
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.
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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 |