US3219716A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of oligomers of butadiene-(1,3)
Assignee: BASF SE
•
Filing: 1962-08-21
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Granted: 1965-11-23
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Expires: 1982-08-21
Abstract
No abstract record available.
Inventors
- 👤 Wittenberg Dietmar
- 👤 Lautenschlager Hans
- 👤 Kutepow Nikolaus Von
- 👤 Meier Fritz
- 👤 Seibt Hubertus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:10
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07C; C07C2/00; C07C2/02; C07C2/42; C07C2/44; C07C2/46; C07C2/465; C07C2/50; C07C2/52; C07F9/06; C07F9/08; C07F9/141; C07F9/145; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65742; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN A PROCESS FOR THE PRODUCTION OF OLIGOMERS OF BUTADIENE-(1,3) WHEREIN BUTADIENE-(1,3) IS CONVERTED INTO SAID OLIGOMERS AT A TEMPERATURE BETWEEN 0 AND 250*C. IN THE PRESENCE OF A CATALYST OBTAINED BY MIXING (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF SALTS AND CHELATE COMPLEXES OF THE METALS OF THE IRON GROUP OF THE PERIODIC SYSTEM OF ELEMENTS; (B) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANOMETALLIC COMPOUNDS AND HYDRIDES OF ELEMENTS OF GROUPS IA, IIA, IIB AND IIIA OF THE PERIODIC SYSTEM OF ELEMENTS; AND (C) A PHOSPHITE, THE IMPROVEMENT WHICH COMPRISES: USING AS COMPONENT (C) A PHOSPHITE HAVING AT LEAST ONE ARYL RADICAL WHICH IS SUBSTITUTED IN O-POSITION TO THE OXYGEN ATOM WHICH IS ATTACHED TO THE PHOSPHORUS ATOM.
Claim 2
Dependent Claim
123 words
IN A PROCESS FOR THE PRODUCTION OF OLIGOMERS OF BUTADIENE-(1,3) WHEREIN BUTADIENE-(1,3) IS CONVERTED INTO SAID OLIGOMERS AT A TEMPERATURE BETWEEN 0 AND 250*C. IN THE PRESENCE OF A CATALYST OBTAINED BY MIXING (A) A MEMBER SELECTED FROM THE GROUP CONSISTING OF SALTS AND CHELATE COMPLEXES OF THE METALS OF THE IRON GROUP OF THE PERIODIC SYSTEM OF ELEMENTS; (B) A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ORGANOMETALLIC COMPOUNDS AND HYDRIDES OF ELEMENTS OF GROUPS IA, IIA, IIB AND IIIA OF THE PERIODIC SYSTEM OF ELEMENTS; AND (C) A PHOSPHITE, THE IMPROVEMENT WHICH COMPRISES: USING AS COMPONENT (C) A PHOSPHITE HAVING AT LEAST ONE ARYL RADICAL WHICH IS SUBSTITUTED IN O-POSITION TO THE OXYGEN ATOM WHICH IS ATTACHED TO THE PHOSPHORUS ATOM.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |