US3312752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of low molecular weight liquid polymers of 1, 3-diolefins
Assignee: Huels AG
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Filing: 1965-07-08
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Granted: 1967-04-04
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Expires: 1985-07-08
Abstract
No abstract record available.
Inventors
- 👤 Schleimer Bernhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:09
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C07C2/406; C07C2531/00; C07C2531/02; C07C2531/04; C07C2531/12; C07C2531/14; C07C2531/16; C07C2531/22; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
IN A PROCESS OF PRODUCING A LIQUID POLYDIENE HAVING A MOLECULAR WEIGHT OF FROM 500 TO 5,000 AND A VISCOSITY, MEASURED AT 50*C., OF FROM 50 TO 500 CENTIPOISES FROM THE POLYMERIZATION OF A CONJUGATED 1,3-DIENE MONOMER, BY POLYMERIZING ONE PART BY WEIGHT OF THE MONOMER IN AN INERT DILUENT HAVING DISSOLVED THEREIN A NICKEL COMPOUND AND AN ALUMINUM HALIDE COMPOUND, SAID COMPOUNDS BEING PRESENT IN CATALYTIC QUANTITIES, THE IMPROVE, MENT WHICH COMPRISES REGULATING THE POLYMERIZATION REACTION BY INCORPORATING IN THE DILUENT FROM 0.005 TO 0.15 PART BY WEIGHT OF A VINYL-CYCLOOLEFIN.
Claim 2
Dependent Claim
92 words
IN A PROCESS OF PRODUCING A LIQUID POLYDIENE HAVING A MOLECULAR WEIGHT OF FROM 500 TO 5,000 AND A VISCOSITY, MEASURED AT 50*C., OF FROM 50 TO 500 CENTIPOISES FROM THE POLYMERIZATION OF A CONJUGATED 1,3-DIENE MONOMER, BY POLYMERIZING ONE PART BY WEIGHT OF THE MONOMER IN AN INERT DILUENT HAVING DISSOLVED THEREIN A NICKEL COMPOUND AND AN ALUMINUM HALIDE COMPOUND, SAID COMPOUNDS BEING PRESENT IN CATALYTIC QUANTITIES, THE IMPROVE, MENT WHICH COMPRISES REGULATING THE POLYMERIZATION REACTION BY INCORPORATING IN THE DILUENT FROM 0.005 TO 0.15 PART BY WEIGHT OF A VINYL-CYCLOOLEFIN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-04-03 | 1970-10-03 | 1971-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-03 | 1974-10-03 | 1975-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-03 | 1978-10-03 | 1979-04-04 | $7700.00 | Window Closed / Lapsed |