US3687978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Macrocyclic polyether compounds
Assignee: EIDP Inc
•
Filing: 1969-08-06
•
Granted: 1972-08-29
•
Expires: 1989-08-06
Abstract
Abstract Macrocyclic polyether (''''crown'''') compounds wherein the macrocyclic ring contains at least 14 carbon and oxygen atoms, each oxygen in the ring being separated from adjoining oxygens in the ring by two or three carbons; and the macrocyclic ring being fused to 1-4 other rings. These crown compounds find use as complexing agents, dye components, and gelation agents.
Inventors
- 👤 Charles John Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:33
CPC Classifications
C; C07; C07D; C07D323/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
12 words
The polyether of claim 1 wherein the macrocyclic ring contains 14-28 atoms.
Claim 2
Dependent Claim
15 words
The polyether of claim 2 wherein the macrocyclic ring contains at least five oxygen atoms.
Claim 3
Dependent Claim
19 words
The polyether of claim 2 wherein the 1-4 rings to which the macrocyclic ring is fused are single rings.
Claim 4
Dependent Claim
20 words
The polyether of claim 4 wherein the macrocyclic ring is fused to 1-4 rings from the group: phenylene and cyclohexylene.
Claim 5
Dependent Claim
51 words
A polyether of claim 1 having the formula wherein Q is (a), (b) or (c) and R is (a), (b), (c) or -CH2CH2-; with the provisos that (m + n) is 3-8 when R is -CH2CH2- and m is 2-9 and n is 1-9 when R is (a), (b) or (c).
Claim 6
Dependent Claim
31 words
The polyether of claim 6 wherein Q and R are and Z is from the group: hydrogen, chloro, bromo, iodo, nitro, amino, alkyl, aryl, aralkyl, alkoxy, cyano, hydroxy, carboxy or sulfo.
Claim 7
Dependent Claim
9 words
A polyether of claim 7 wherein Z is hydrogen.
Claim 8
Dependent Claim
23 words
A polyether of claim 1 having the formula where Q is (a), (b) or (c) and R is (a), (b), (c) or -CH2CH2-.
Claim 9
Dependent Claim
31 words
The polyether of claim 9 wherein Q and R are and Z is from the group: hydrogen, chloro, bromo, iodo, nitro, amino, alkyl, aryl, aralkyl, alkoxy, cyano, hydroxy, carboxy or sulfo.
Claim 10
Dependent Claim
9 words
The polyether of claim 10 wherein Z is hydrogen.
Claim 11
Dependent Claim
49 words
A macrocyclic polyether of claim 1 wherein a carbocyclic ring bears a substituent from the group chloro, bromo, iodo, nitro, amino, alkyl, aryl, aralkyl, alkoxy, cyano, hydroxy, carboxy, and sulfo wherein alkyl and alkylene radicals contain 1-8 carbon atoms and any aryl radical contains less than 11 carbon atoms.
Claim 12
Dependent Claim
22 words
A macrocyclic polyether of claim 1 wherein the carbocyclic rings are selected from at least one of the groups (a) and (b).
References Cited (Backward Citations)
US3546318A
Cited
US3580889A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |