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US3950456A
Expired / Lapsed
US
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Flame-retardant composition
Assignee: Cities Service Co
•
Filing: 1975-07-25
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Granted: 1976-04-13
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Expires: 1995-07-25
Abstract
Abstract A normally flammable organic polymer is rendered flame retardant by the incorporation of a compound corresponding to the formula:
Inventors
- 👤 Jack Newcombe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:22
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
17 words
A composition comprising a normally flammable organic polymer and a flame retardant corresponding to the formula: ##SPC5##
Claim 2
Dependent Claim
17 words
A composition comprising a normally flammable organic polymer and a flame retardant corresponding to the formula: ##SPC5##
Claim 3
Dependent Claim
24 words
The composition of claim 1 containing antimony trioxide in an amount such as to provide a flame retardant/antimony trioxide weight ratio of about 1-4.5/1.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein the flame retardant/antimony trioxide weight ratio is about 2/1.
Claim 5
Dependent Claim
19 words
The composition of claim 1 wherein the normally flammable organic polymer is a synthetic polymer of an unsaturated hydrocarbon.
Claim 6
Dependent Claim
10 words
The composition of claim 4 wherein the polymer is polypropylene.
Claim 7
Dependent Claim
10 words
The composition of claim 4 wherein the polymer is polyethylene.
Claim 8
Dependent Claim
11 words
The composition of claim 4 wherein the polymer is impact polystyrene.
Claim 9
Dependent Claim
12 words
The composition of claim 4 wherein the polymer is an acrylonitrile-butadiene-styrene terpolymer.
References Cited (Backward Citations)
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US2955141A
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US3025329A
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US3403036A
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US3365505A
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US3410916A
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US3396201A
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US3787356A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-13 | 1979-10-13 | 1980-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-13 | 1983-10-13 | 1984-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-13 | 1987-10-13 | 1988-04-13 | $7700.00 | Window Closed / Lapsed |