US3880882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing mixed dicycloalkylidene peroxides
Assignee: Individual
•
Filing: 1973-06-25
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Granted: 1975-04-29
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Expires: 1993-06-25
Abstract
Abstract Mixed cyclic trimeric peroxides are prepared by reacting 1,1''dihydroperoxy dicyclic peroxides with cyclic ketones in liquid organic carboxylic acid solvents in the presence of strong acid catalysts at low temperatures. The mixed trimeric peroxides are converted to mixed dimeric peroxides by allowing an organic carboxylic acid solution thereof containing a strong acid catalyst to stand at about room temperature for a short period of time.
Inventors
- 👤 Paul Richard Story
- 👤 Bunge Lee
- 👤 Peter Busch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
CPC Classifications
C; C07; C07D; C07D323/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A METHOD FOR PREPARING MIXED DIMERIC PEROXIDES OF THE FORMULA:
Claim 2
Independent Claim
10 words
A METHOD FOR PREPARING MIXED DIMERIC PEROXIDES OF THE FORMULA:
References Cited (Backward Citations)
US3528898A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |