Patent US2843577A successfully refreshed from Google Patents.
US2843577A
Expired / Lapsed
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Process and catalyst for polymerization using polyvalent metal salts and a reducing agent plus a sulfur compound
Assignee: Standard Oil Co
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Filing: 1955-10-17
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Granted: 1958-07-15
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Expires: 1975-10-17
Abstract
No abstract record available.
Inventors
- 👤 Herbert N Friedlander
- 👤 Omar O Juveland
- 👤 Field Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:59
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID POLYMER WHICH COMPRISES CONTACTING A NORMALLY GASEOUS N-ALKENE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY MIXING A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF MERCAPTANS AND HYDROCARBON SULFIDES WITH (A) AN ALKALI REAGENT SELECTED FROM THE CLASS CONSISTING OF: (1) ALKALI METAL, (2) SALKALI METAL HYDRIDE, (3) HYDROCARBON DERIVATIVE OF AN ALKALI METAL, AND (4) MIXTURES OF SAID ALKALI REAGENTS, AND WITH (B) A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A, 5A, 6A AND 8 OF THE MENDELEEFF PERIODIC TABLE, AND RECOVERING A POLYMER THUS PRODUCED.
Claim 2
Dependent Claim
100 words
A PROCESS FOR THE PRODUCTION OF A NORMALLY SOLID POLYMER WHICH COMPRISES CONTACTING A NORMALLY GASEOUS N-ALKENE UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY MIXING A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF MERCAPTANS AND HYDROCARBON SULFIDES WITH (A) AN ALKALI REAGENT SELECTED FROM THE CLASS CONSISTING OF: (1) ALKALI METAL, (2) SALKALI METAL HYDRIDE, (3) HYDROCARBON DERIVATIVE OF AN ALKALI METAL, AND (4) MIXTURES OF SAID ALKALI REAGENTS, AND WITH (B) A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A, 5A, 6A AND 8 OF THE MENDELEEFF PERIODIC TABLE, AND RECOVERING A POLYMER THUS PRODUCED.
Claim 3
Dependent Claim
83 words
THE CATALYTIC MIXTURE PRODUCED BY THE PROCESS WHICH COMPRISES CONTACTING AN ALKALI METAL AND AN INERT LIQUID HYDROCARBON MEDIUM WITH A REACTIVE HALOGEN DERIVATIVE OF A HYDROCARBON IN THE PRESENCE OF A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF MERCAPTANS AND HYDROCARBON SULFIDES UNDER REACTION CONDITIONS TO YIELD A HYDROCARBON DERIVATIVE OF SAID ALKALI METAL AND THEREAFTER CONTACTING GHE RESULTANT MIXTURE WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A, 5A, 6A AND 8 OF THE MENDELEEFF PERIODIC TABLE.
Claim 4
Dependent Claim
83 words
THE CATALYTIC MIXTURE PRODUCED BY THE PROCESS WHICH COMPRISES CONTACTING AN ALKALI METAL AND AN INERT LIQUID HYDROCARBON MEDIUM WITH A REACTIVE HALOGEN DERIVATIVE OF A HYDROCARBON IN THE PRESENCE OF A SULFUR COMPOUND SELECTED FROM THE CLASS CONSISTING OF MERCAPTANS AND HYDROCARBON SULFIDES UNDER REACTION CONDITIONS TO YIELD A HYDROCARBON DERIVATIVE OF SAID ALKALI METAL AND THEREAFTER CONTACTING GHE RESULTANT MIXTURE WITH A POLYVALENT METAL SALT OF A METAL SELECTED FROM GROUPS 4A, 5A, 6A AND 8 OF THE MENDELEEFF PERIODIC TABLE.
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) | 1961-07-14 | 1962-01-13 | 1962-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-14 | 1966-01-13 | 1966-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-14 | 1970-01-13 | 1970-07-15 | $7700.00 | Window Closed / Lapsed |