Patent US3189589A successfully refreshed from Google Patents.
US3189589A
Expired / Lapsed
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Polymerization of olefins with a titanium halide-transition metal borohydride catalyst
Assignee: Phillips Petroleum Co
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Filing: 1960-07-01
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Granted: 1965-06-15
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Expires: 1980-07-01
Abstract
No abstract record available.
Inventors
- 👤 Donald R Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:42
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE 1-OLEFINS CONTAINING A CH2=C= RADICAL IN THE ALKYL PORTION AND HAVING 2 TO 8 CARBON ATOMS, INCLUSIVE, COMPRISING CONTACTING SAID 1-OLEFIN UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY REACTING (A) TIX, AND (B) M(BH4)Z AT A TEMPERATURE IN THE RANGE OF 0 TO 250*F., WHEREIN X IS A HALIDE SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE, M IS AT LEAST ONE TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND HAFNIUM, Y IS AN INTEGER FRO 2 TO 4, AND Z IS AN INTEGER EQUIVALENT TO THE VALENCE OF M, WHEREIN THE MOLAR RATIO OF (B) TO (A) IS IN THE RANGE OF 0.2 TO 3.0.
Claim 2
Dependent Claim
118 words
A PROCESS FOR THE POLYMERIZATION OF POLYMERIZABLE 1-OLEFINS CONTAINING A CH2=C= RADICAL IN THE ALKYL PORTION AND HAVING 2 TO 8 CARBON ATOMS, INCLUSIVE, COMPRISING CONTACTING SAID 1-OLEFIN UNDER POLYMERIZATION CONDITIONS WITH A CATALYST PREPARED BY REACTING (A) TIX, AND (B) M(BH4)Z AT A TEMPERATURE IN THE RANGE OF 0 TO 250*F., WHEREIN X IS A HALIDE SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, BROMIDE AND IODIDE, M IS AT LEAST ONE TRANSITION METAL SELECTED FROM THE GROUP CONSISTING OF ZIRCONIUM AND HAFNIUM, Y IS AN INTEGER FRO 2 TO 4, AND Z IS AN INTEGER EQUIVALENT TO THE VALENCE OF M, WHEREIN THE MOLAR RATIO OF (B) TO (A) IS IN THE RANGE OF 0.2 TO 3.0.
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) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |