US3847883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing polymers utilizing as catalysts hydrocarbon-soluble complexes of an organomagnesium compound with a group i organometallic compound
Assignee: Gulf Research and Development Co
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Filing: 1972-08-30
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Granted: 1974-11-12
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Expires: 1992-08-30
Abstract
Abstract 1. IN A METHOD OF PREPARING POLYMERS, BY POLYMERIZING AT LEAAST ONE CONJUGATED DIENE MONOMER, THE IMPROVEMENT WHICH CONSISTS IN THE UTILIZATION, AS THE CATALYST, IN A HYDROCARBON SOLVENT SOLUTION, OF A COMPLEX OF (I) AT LEAST ONE ORGANOMAGNESIUM COMPOUND WITH (II) AT LEAST ONE ORGANOMETALLIC COMPOUND IN WHICH THE METAL IS A GROUP I METAL, THE ORGANO RADICALS OF SAID (I) AND (II) COMPOUNDS BEING C2-C14 HYDROCARBON RADICALS SELECTED FROM THE GROUP OF ALKYL, CYCLOALKYL, ARYL, ALKYLARYL, CYCLOALKYLARYL, HETEROCYCLIC, ETHYLENICALLY UNSATURATED ORGANO RADICALS, ALKYLENE AND POLYENES.
Inventors
- 👤 C Kamienski
- 👤 J Eastham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:24
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A METHOD OF PREPARING POLYMERS, BY POLYMERIZING AT LEAAST ONE CONJUGATED DIENE MONOMER, THE IMPROVEMENT WHICH CONSISTS IN THE UTILIZATION, AS THE CATALYST, IN A HYDROCARBON SOLVENT SOLUTION, OF A COMPLEX OF (I) AT LEAST ONE ORGANOMAGNESIUM COMPOUND WITH (II) AT LEAST ONE ORGANOMETALLIC COMPOUND IN WHICH THE METAL IS A GROUP I METAL, THE ORGANO RADICALS OF SAID (I) AND (II) COMPOUNDS BEING C2-C14 HYDROCARBON RADICALS SELECTED FROM THE GROUP OF ALKYL, CYCLOALKYL, ARYL, ALKYLARYL, CYCLOALKYLARYL, HETEROCYCLIC, ETHYLENICALLY UNSATURATED ORGANO RADICALS, ALKYLENE AND POLYENES.
Claim 2
Dependent Claim
86 words
IN A METHOD OF PREPARING POLYMERS, BY POLYMERIZING AT LEAAST ONE CONJUGATED DIENE MONOMER, THE IMPROVEMENT WHICH CONSISTS IN THE UTILIZATION, AS THE CATALYST, IN A HYDROCARBON SOLVENT SOLUTION, OF A COMPLEX OF (I) AT LEAST ONE ORGANOMAGNESIUM COMPOUND WITH (II) AT LEAST ONE ORGANOMETALLIC COMPOUND IN WHICH THE METAL IS A GROUP I METAL, THE ORGANO RADICALS OF SAID (I) AND (II) COMPOUNDS BEING C2-C14 HYDROCARBON RADICALS SELECTED FROM THE GROUP OF ALKYL, CYCLOALKYL, ARYL, ALKYLARYL, CYCLOALKYLARYL, HETEROCYCLIC, ETHYLENICALLY UNSATURATED ORGANO RADICALS, ALKYLENE AND POLYENES.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |