US2518573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of 1, 3-dienes in the presence of beta-unsaturated aliphatic iodides
Assignee: EIDP Inc
•
Filing: 1946-05-23
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Granted: 1950-08-15
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Expires: 1966-05-23
Abstract
No abstract record available.
Inventors
- 👤 George W Scott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:56
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C08F36/14; C08F36/16; Y; Y10; Y10S; Y10S200/00; Y10S200/03; Y10S526/00; Y10S526/911
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
107 words
A METHOD FOR PREPARING READILY PROCESSABLE RUBBER-LIKE POLYMERS OF 1,3-BUTADIENE COMPOUNDS OF THE GROUP CONSISTING OF 2-CHLORO-1,3BUTADIENE AND 1,3-BUTADIENE WHICH COMPRISES CARRYING OUT THE POLYMERIZATION OF THE MONOMERIC MATERIAL, WHICH CONTAINS AT LEAST 50% OF THE 1,3-BUTADIENE COMPOUND, IN THE PRESENCE OF FROM 0.10% TO 10.0%, BASED ON THE WEIGHT OF THE POLYMERIZABLE MATERIAL, OF A HALOGEN SUBSTITUTED STRAIGHT CHAIN UNSATURATED ALIPHATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF THE MONOOLEFINE AND DI-OLEFINE SERIES CONTAINING NOT MORE THAN 8 CARBON ATOMS WITH NOT MORE THAN TWO HALOGEN ATOMS IN THE MOLECULE AND NOT MORE THAN ONE HALOGEN ON A SINGLE CARBON ATOM, WHICH COMPOUND HAS THE NUCLEUS
References Cited (Backward Citations)
US2066329A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-14 | 1954-02-13 | 1954-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-14 | 1958-02-13 | 1958-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-14 | 1962-02-13 | 1962-08-15 | $7700.00 | Window Closed / Lapsed |