US3031441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing polybutadienes
Assignee: Individual
•
Filing: 1958-05-26
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Granted: 1962-04-24
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Expires: 1978-05-26
Abstract
No abstract record available.
Inventors
- 👤 Verheyden Albert
- 👤 Ochsner Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:34
CPC Classifications
C; C10; C10K; C10K1/00; C10K1/20; C08; C08F; C08F136/00; C08F136/02; C08F136/04; C08F136/06; C10K1/02; C10K1/024
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
92 words
PROCESS FOR PREPARING POLYBUTADIENE IN THE FORM OF A NON-STICKY SOLID WITH A 1,2-ADDITION UNITS RATIO GREATER THAN 70% WHICH COMPRISES CONTACTING 1,3-BUTADIENE WITH A CATALYST WHICH CONSISTS ESSENTIALLY OF THE PRODUCT FROM 0.5 TO 5 MOLES OF AMYLSODIUM AND FROM 1 MOLE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MANGANESE, IRON, NICKEL AND COBALT CHLORIDES AND NICKEL AND COBALT ACETYLACETONATES, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE BETWEEN -40* AND +40*C., UNDER A PRESSURE NOT EXCEEDING 5 ATMOSPHERES AND IN THE PRESENCE OF AN ALIPHATIC HYDROCARBON AS SOLVENT.
Claim 2
Dependent Claim
92 words
PROCESS FOR PREPARING POLYBUTADIENE IN THE FORM OF A NON-STICKY SOLID WITH A 1,2-ADDITION UNITS RATIO GREATER THAN 70% WHICH COMPRISES CONTACTING 1,3-BUTADIENE WITH A CATALYST WHICH CONSISTS ESSENTIALLY OF THE PRODUCT FROM 0.5 TO 5 MOLES OF AMYLSODIUM AND FROM 1 MOLE OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MANGANESE, IRON, NICKEL AND COBALT CHLORIDES AND NICKEL AND COBALT ACETYLACETONATES, SAID CONTACTING BEING CARRIED OUT AT A TEMPERATURE BETWEEN -40* AND +40*C., UNDER A PRESSURE NOT EXCEEDING 5 ATMOSPHERES AND IN THE PRESENCE OF AN ALIPHATIC HYDROCARBON AS SOLVENT.
Claim 3
Dependent Claim
47 words
A CATALYST WHICH CONSISTS ESSENTIALLY OF THE REACTION PRODUCT OF (A) FROM 0.5 TO 5 MOLECULAR EQUIVALENTS OF AMYL SODIUM AND (B) 1 MOLECULAR EQIVALENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MANGANESE CHLORIDE, IRON CHLORIDE, NICKEL CHLORIDE, COBALT CHLORIDE, NICKEL ACETYLACETONATE AND COBALT ACETYLACETONATE.
Claim 4
Dependent Claim
47 words
A CATALYST WHICH CONSISTS ESSENTIALLY OF THE REACTION PRODUCT OF (A) FROM 0.5 TO 5 MOLECULAR EQUIVALENTS OF AMYL SODIUM AND (B) 1 MOLECULAR EQIVALENT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF MANGANESE CHLORIDE, IRON CHLORIDE, NICKEL CHLORIDE, COBALT CHLORIDE, NICKEL ACETYLACETONATE AND COBALT ACETYLACETONATE.
References Cited (Backward Citations)
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Cited
GB789781A
Cited
GB779111A
Cited
US2832759A
Cited
US2905659A
Cited
US2977349A
Cited
US2920062A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-23 | 1965-10-23 | 1966-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-23 | 1969-10-23 | 1970-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-23 | 1973-10-23 | 1974-04-24 | $7700.00 | Window Closed / Lapsed |