US3245975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for production of rubbery polymers
Assignee: Phillips Petroleum Co
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Filing: 1959-10-06
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Granted: 1966-04-12
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Expires: 1979-10-06
Abstract
No abstract record available.
Inventors
- 👤 Robert P Zelinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:28
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
171 words
A METHOD FOR POLYMERIZING 1,3-BUTADIENE WHICH COMPRISES CONTACTING 1,3-BUTADIENE WITH A CATALYST WHICH FORMS ON MIXING COMPONENTS COMPRISING (A) AN ORGANOMETAL COMPOUND HAVING THE FORMULA R3AL, WHEREIN R IS AN ALKYL RADICAL CONTAINING FROM 1 TO 12, INCLUSIVE, CARBON ATOMS, (B) A TITANIUM HALIDE HAVING THE FORMULA TIXM, WHEREIN X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND M IS AN INTEGER FROM 2 TO 3, INCLUSIVE, AND (C) IODINE, THE MOL RATION OF SAID ORGANOMETAL COMPOUND TO SAID TITANIUM HALIDE BEING IN THE RANGE OF 2:1 TO 20:1 AND THE MOL RATIO OF SAID TITANIUM HALIDE TO SAID IODINE BEING IN THE RANGE OF 10:1 TO 0.25:1, THE MOL RATIO OF SAID ORGANOMETAL COMPOUND TO THE TOTAL MOLAR QUANTITIES OF SAID TITANIUM HALIDE AND SAID IODINE BEING GREATER THAN 1, SAID CONTACTING OCCURRING IN THE PRESENCE OF A HYDROCARBON DILUENT AT A TEMPERATURE IN THE RANGE -100 TO 250*F. AND AT A PRESSURE SUFFICIENT TO MAINTAIN SAID DILUENT IN LIQUID PHASE; AND RECOVERING THE POLYMER SO PRODUCED.
Claim 2
Independent Claim
171 words
A METHOD FOR POLYMERIZING 1,3-BUTADIENE WHICH COMPRISES CONTACTING 1,3-BUTADIENE WITH A CATALYST WHICH FORMS ON MIXING COMPONENTS COMPRISING (A) AN ORGANOMETAL COMPOUND HAVING THE FORMULA R3AL, WHEREIN R IS AN ALKYL RADICAL CONTAINING FROM 1 TO 12, INCLUSIVE, CARBON ATOMS, (B) A TITANIUM HALIDE HAVING THE FORMULA TIXM, WHEREIN X IS SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE AND M IS AN INTEGER FROM 2 TO 3, INCLUSIVE, AND (C) IODINE, THE MOL RATION OF SAID ORGANOMETAL COMPOUND TO SAID TITANIUM HALIDE BEING IN THE RANGE OF 2:1 TO 20:1 AND THE MOL RATIO OF SAID TITANIUM HALIDE TO SAID IODINE BEING IN THE RANGE OF 10:1 TO 0.25:1, THE MOL RATIO OF SAID ORGANOMETAL COMPOUND TO THE TOTAL MOLAR QUANTITIES OF SAID TITANIUM HALIDE AND SAID IODINE BEING GREATER THAN 1, SAID CONTACTING OCCURRING IN THE PRESENCE OF A HYDROCARBON DILUENT AT A TEMPERATURE IN THE RANGE -100 TO 250*F. AND AT A PRESSURE SUFFICIENT TO MAINTAIN SAID DILUENT IN LIQUID PHASE; AND RECOVERING THE POLYMER SO PRODUCED.
References Cited (Backward Citations)
BE543292A
Cited
US2910461A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |