US3317499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ziegler-natta type olefin polymerization catalyst modified with organic acid halides or sulfur containing organic acid halides
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1963-07-30
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Granted: 1967-05-02
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Nakaguchi Kohei
- 👤 Fujita Toshimichi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:31
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD FOR PRODUCING POLYOLEFINES COMPRISING CONTACTING AN A-MONOOLEFINE HAVING 3-10 CARBON ATOMS WITH A CATALYST SYSTEM OOBTAINED BY MIXING (1) AN ORGANOMETALLIC COMPOUND WHICH IS A COMPOUND OF A METAL SELECTED FROM GROUPS IA, IIA, IIB AND IIIB OF THE PERIODIC TABLE AND A HYDROCARBON RESIDUE HAING 1-20 CARBON ATOMS DIRECTLY ATTACHED TO THE METAL BY A CARBON-METAL LINKAGE, (2) A HALIDE OF A TRANSITION METAL IN WHICH THE VALENCY OF THE METAL IS BELOW ITS MAXIMUM VALUE, THE TRANSITION METAL BEING SELECTED FROM GROUPS IVA, VA AND VIA OF THE PERIODIC TABLE, AND (3) AN ACID HALIDE OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC, THIOCARBOXYLIC, SULFINIC, AND SULFONIC ACIDS.
Claim 2
Independent Claim
115 words
A METHOD FOR PRODUCING POLYOLEFINES COMPRISING CONTACTING AN A-MONOOLEFINE HAVING 3-10 CARBON ATOMS WITH A CATALYST SYSTEM OOBTAINED BY MIXING (1) AN ORGANOMETALLIC COMPOUND WHICH IS A COMPOUND OF A METAL SELECTED FROM GROUPS IA, IIA, IIB AND IIIB OF THE PERIODIC TABLE AND A HYDROCARBON RESIDUE HAING 1-20 CARBON ATOMS DIRECTLY ATTACHED TO THE METAL BY A CARBON-METAL LINKAGE, (2) A HALIDE OF A TRANSITION METAL IN WHICH THE VALENCY OF THE METAL IS BELOW ITS MAXIMUM VALUE, THE TRANSITION METAL BEING SELECTED FROM GROUPS IVA, VA AND VIA OF THE PERIODIC TABLE, AND (3) AN ACID HALIDE OF AN ORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF CARBOXYLIC, THIOCARBOXYLIC, SULFINIC, AND SULFONIC ACIDS.
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) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |