US3812095A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounds having peroxy and aliphatic azo groups and methods using these as initiators
Assignee: Arkema Inc
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Filing: 1970-05-14
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Granted: 1974-05-21
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Expires: 1990-05-14
Abstract
Abstract (I) COMPOUNDS HAVINGINDEPENDENT PEROXIDIC (X) AND ALIPHATIC AZO GROUPS OF THE FORMULA ((R-N=N-R'')M-X)N EXAMPLE: DI-T-BYTYLPEROXY ESTER OF CIS-4,4''-AZOBIS-(4CYANOVALERIC ACID). (II) A METHOD OF MAKING A BLOCK POLYMER WHERE VINYL MONOMER IS INITIATED SEQUENTIALLY TO PRODUCE IN ONE INSTANCE: A POLYMER HAVING AZO-CARBON LINKAGES PRESENT, WHICH IS THEN REACTED WITH VINYL MONOMER UNDER CONDITIONS TO RUPTURE THE AZO-CARBON LINKAGES, AND IN ANOTHER INSTANCE: A POLYMER HAVING PEROXY-CARBON LINKAGES PRESENT, WHICH IS THEN REACTED WITH VINYL MONOMER UNDER CONDITIONS TO RUPTURE THE PEROXY CARBON LINKAGES.
Inventors
- 👤 C Sheppard
- 👤 R Macleay
- 👤 R Bafford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:53
CPC Classifications
C; C07; C07C; C07C247/00; C07C247/02; C07C247/04; C07C245/00; C07C245/02; C07C245/04; C07C409/00; C07C409/40; C07C409/42; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C07D271/00; C07D271/02; C07D271/10; C08; C08F; C08F293/00; C07C2601/00; C07C2601/02; C07C2601/06; C07C2601/08; C07C2603/00; C07C2603/56; C07C2603/58; C07C2603/70; C07C2603/74
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-20 | 1977-11-19 | 1978-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-20 | 1981-11-19 | 1982-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-20 | 1985-11-19 | 1986-05-21 | $7700.00 | Window Closed / Lapsed |