US3845102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing the methacrylate esters of multibrominated phenol derivatives
Assignee: Daicel Corp
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Filing: 1971-12-10
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Granted: 1974-10-29
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Expires: 1991-12-10
Abstract
Abstract 1. A PROCESS FOR PREPARING METHACRYLATE ESTER OF MULTIBROMINATED PHENOL DERIVATIVE, WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA: ((H)K-),((BR)N-),((H3C)M-)-PHENOL WHEREIN N IS INTEGER 3, 4 OR 5M M IS AN INTEGER 0, 1 OR 2, K IS AN INTEGER 0, 1 OR 2, AND N+N+K=5, WITH METHACRYLIC ACID CHLORIDE IN THE PRESENCE OF A PYRIDINE BASE AT A TEMPERATURE IN THE RANGE OF 100 TIO 160*C.
Inventors
- 👤 M Higuchi
- 👤 K Arimoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:54
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/62; C07C69/65; C07C69/653
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
A PROCESS FOR PREPARING METHACRYLATE ESTER OF MULTIBROMINATED PHENOL DERIVATIVE, WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
18 words
A PROCESS FOR PREPARING METHACRYLATE ESTER OF MULTIBROMINATED PHENOL DERIVATIVE, WHICH COMPRISES REACTING A COMPOUND OF THE FORMULA:
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |