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Patent US3979545A successfully refreshed from Google Patents.
US3979545A
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Synthetic fiber impregnated with flame retardant compositions containing halogen containing amides
Assignee: Millennium Petrochemicals Inc
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Filing: 1974-09-12
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Granted: 1976-09-07
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Expires: 1994-09-12
Abstract
Abstract The flame resistance of synthetic fibers and solid polymers are improved by treatment with a halogen containing amide having the formula ##EQU1## wherein R is lower alkoxy; lower alkoxy carbonyl; ##EQU2## X is chlorine or bromine; m is 0 or 1; n is 1-6; and y is 1-13.
Inventors
- 👤 Harry Braus
- 👤 Jay R. Woltermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:43
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/402; C; C07; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/16; C07C275/00; C07C275/04; C07C275/06; C07C275/08; C08; C08K; C08K5/00; C08K5/16; C08K5/20; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2965; Y10T428/2967; Y10T428/2969; Y10T428/2971
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
54 words
A synthetic fiber of improved flame resistance which comprises said synthetic fiber impregnated with an effective flame resistant amount of a halogen containing amide of the formula ##EQU14## wherein R is lower alkoxy, lower alkoxy carbonyl, ##EQU15## X is chlorine or bromine; m is 0 or 1; n is 1-6; and y is 1-13.
Claim 2
Dependent Claim
54 words
A synthetic fiber of improved flame resistance which comprises said synthetic fiber impregnated with an effective flame resistant amount of a halogen containing amide of the formula ##EQU14## wherein R is lower alkoxy, lower alkoxy carbonyl, ##EQU15## X is chlorine or bromine; m is 0 or 1; n is 1-6; and y is 1-13.
Claim 3
Dependent Claim
22 words
The fiber of claim 1 wherein said lower alkoxy contains 1-6 carbon atoms and said lower alkoxy carbonyl contains 2-7 carbon atoms.
Claim 4
Dependent Claim
22 words
The fiber of claim 2 wherein said amide is selected from the group consisting of bis(β,γ-dibromopropyl)ethyl carbamate, N,N-bis(β,γ-dibromopropyl)ethyloxamate, tetra(β,γ-dibromopropyl)urea, N,N-bis(tetrabromodipropyl)isophthalamide and N,N'-bis(β,γ-dibromopropyl)oxamide.
Claim 5
Dependent Claim
26 words
The fiber of claim 1 wherein said effective flame resistant amount is about 5-20 weight percent based on the weight of said fiber and said amide.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |