US3915930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame-retardant composition
Assignee: Cities Service Co
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Filing: 1974-07-15
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Granted: 1975-10-28
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Expires: 1994-07-15
Abstract
Abstract Novel halogenated bisimides correspond to the formula: wherein X is bromo or chloro; X'' is hydrogen, bromo, or chloro; R is hydrogen or an alkyl radical containing 1-5 carbon atoms; R'' is a divalent sulfur radical containing 1-2 sulfur atoms or a divalent organic radical containing 1-24 carbon atoms; and n is 0 or 1. The bisimides are useful as flame retardants for normally flammable organic polymers and, if desired, may be used in conjunction with synergists.
Inventors
- 👤 Jr Anderson O Dotson
- 👤 Francis T Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:15
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/44; C07D209/48; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C08K5/3417; C08K5/36; C08K5/43; C09; C09D; C09D5/00; C09D5/18; D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; D06M13/418
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
16 words
A COMPOSITION COMPRISING A NORMALLY FLAMMABLE ORGANIC POLYMER AND A FLAME RETARDANT CORRESPONDING TO THE FORMULA:
Claim 2
Dependent Claim
16 words
A COMPOSITION COMPRISING A NORMALLY FLAMMABLE ORGANIC POLYMER AND A FLAME RETARDANT CORRESPONDING TO THE FORMULA:
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the flame retardant corresponds to the formula:
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the flame retardant corresponds to the formula:
References Cited (Backward Citations)
US3730940A
Cited
US3786023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |