US3873569A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complexes of a macrocyclic polyether with one or more sulfur-bearing compounds
Assignee: EIDP Inc
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Filing: 1970-11-27
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Granted: 1975-03-25
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Expires: 1990-11-27
Abstract
Abstract A complex of (A) an organic sulfur-bearing compound and (B) a macrocyclic polyether having a 15-60 carbon and oxygen ring and 1-4 fused carbocyclic rings; the ratio of A:B being about 1:1 to about 6:1. The complex can be used as a curing component for vulcanization of sulfur-curable elastomers.
Inventors
- 👤 Charles John Pedersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C07; C07D; C07D323/00; C08K5/37; C08K5/378
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A COMPLEX OF (A) A THIOUREA AND (B) A MACROCYCLIC POLYETHER HAVING A MACROCYCLIC RING OF CARBON AND OXYGEN ATOMS TOTALING 15-60 RING ATOMS, EACH OXYGEN IN THE RING BEING SEPARATED FROM ITS ADJOINING OXYGENS IN THE RING BY 2 OR 3 CARBON ATOMS, AND THE MACROCYCLIC RING OF THE GROUP; OF VICINAL CARBON ATOMS TO 1-4 CARBOCYCLIC RINGS OF THE GROUP: (A) PHENYLENE, NAPTHYLENE, PHENATHRYLENE, AND ANTHRYLENE, (B) SATURATED ANALOGS OF (A), AND (C) MONOSUBSTITUUTED DERIVATIVES OF (A) WHEREIN THE SUBSTITUENT IS TERTIARY BUTYL.
Claim 2
Dependent Claim
85 words
A COMPLEX OF (A) A THIOUREA AND (B) A MACROCYCLIC POLYETHER HAVING A MACROCYCLIC RING OF CARBON AND OXYGEN ATOMS TOTALING 15-60 RING ATOMS, EACH OXYGEN IN THE RING BEING SEPARATED FROM ITS ADJOINING OXYGENS IN THE RING BY 2 OR 3 CARBON ATOMS, AND THE MACROCYCLIC RING OF THE GROUP; OF VICINAL CARBON ATOMS TO 1-4 CARBOCYCLIC RINGS OF THE GROUP: (A) PHENYLENE, NAPTHYLENE, PHENATHRYLENE, AND ANTHRYLENE, (B) SATURATED ANALOGS OF (A), AND (C) MONOSUBSTITUUTED DERIVATIVES OF (A) WHEREIN THE SUBSTITUENT IS TERTIARY BUTYL.
Claim 3
Dependent Claim
17 words
A complex of claim 1 wherein the molar ratio of A:B is about 1:1 to about 6:1.
Claim 4
Dependent Claim
27 words
A complex of claim 1 wherein the macrocyclic polyether has at least 5 oxygen atoms in the macrocyclic ring and the links consist of 2 carbon atoms.
Claim 5
Dependent Claim
11 words
A complex of claim 1 wherein the sulfur-bearing compound is N-phenylthiourea.
Claim 6
Dependent Claim
1 words
(Dicyclohexyl-18-crown-6).2(N-phenylthiourea).
Claim 7
Dependent Claim
1 words
(Dicyclohexyl-18-crown-6).2(N-phenylthiourea).
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |