US4165309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant polymer composition
Assignee: BP Corp North America Inc
•
Filing: 1978-10-10
•
Granted: 1979-08-21
•
Expires: 1998-10-10
Abstract
Abstract This invention relates to flame resistant resinous polymer compositions. More particularly, this invention relates to flame resistant compositions comprising a resinous thermoplastic polymer, ammonium nitrate, ammonium polyphosphate and a chlorine or bromine containing organic compound.
Inventors
- 👤 Ivor R. Fielding
- 👤 Wassily Poppe
- 👤 Francis J. Slama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:55
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K13/00; C08K13/02; C08K3/28; C08K5/00; C08K5/04; C08K5/09; C08K5/095
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
46 words
A flame retardant composition comprising a resinous polymer chosen from the group consisting of a resinous polymer of propylene, a resinous polymer of styrene, and a resinous poly(alkylene terephthalate); a primary flame retardant comprising a chlorine or bromine containing organic compound; ammonium polyphosphate; and ammonium nitrate.
Claim 2
Dependent Claim
46 words
A flame retardant composition comprising a resinous polymer chosen from the group consisting of a resinous polymer of propylene, a resinous polymer of styrene, and a resinous poly(alkylene terephthalate); a primary flame retardant comprising a chlorine or bromine containing organic compound; ammonium polyphosphate; and ammonium nitrate.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein said resinous polymer is a resinous polymer of propylene containing at least 75 weight percent propylene.
Claim 4
Dependent Claim
16 words
The composition of claim 2 wherein said chlorine or bromine containing organic compound is tetrabromophthalic anhydride.
Claim 5
Dependent Claim
24 words
The composition of claim 2 wherein said ammonium polyphosphate is present in a concentration of from 1 to 5 weight percent of the composition.
Claim 6
Dependent Claim
24 words
The composition of claim 2 wherein said ammonium nitrate is present in a concentration of from 0.1 to 4 weight percent of the composition.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein said poly(alkylene terephthalate) is homo-poly(butylene terephthalate) or homo-poly (ethylene terephthalate).
Claim 8
Dependent Claim
50 words
A flame retardant composition comprising at least 40 weight percent of a substantially crystalline resinous polymer of propylene containing at least 75 weight percent propylene; from 5 to 15 weight percent tetrabromophthalic anhydride; from 1 to 5 weight percent ammonium polyphosphate; and from 0.1 to 3 weight percent ammonium nitrate.
Claim 9
Dependent Claim
50 words
A flame retardant composition comprising at least 40 weight percent of a substantially crystalline resinous polymer of propylene containing at least 75 weight percent propylene; from 5 to 15 weight percent tetrabromophthalic anhydride; from 1 to 5 weight percent ammonium polyphosphate; and from 0.1 to 3 weight percent ammonium nitrate.
References Cited (Backward Citations)
US2491443A
Cited
US2491444A
Cited
US3210321A
Cited
US3427278A
Cited
US3819518A
Cited
US3972820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-20 | 1983-02-19 | 1983-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-20 | 1987-02-19 | 1987-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-20 | 1991-02-19 | 1991-08-21 | $7700.00 | Window Closed / Lapsed |