US4185008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flame retardant compositions
Assignee: BP Corp North America Inc
•
Filing: 1978-10-10
•
Granted: 1980-01-22
•
Expires: 1998-10-10
Abstract
Abstract This invention relates to thermoplastic resin compositions having improved oxygen index values comprising a thermoplastic resin, a nitrate containing compound and a halogenated organic compound.
Inventors
- 👤 Gunter Caspari
- 👤 Wassily Poppe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:09
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/28; C08K5/00; C08K5/02; C08K5/04; C08K5/09
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
72 words
A composition comprising: (a) a thermoplastic polymer and at least one primary flame retardant consisting of a chlorine or bromine containing organic compound; (b) a secondary flame retardant agent in an amount sufficient to give an improved oxygen index, said agent comprising: about 0.05 to about 15 weight percent of one or more nitrate containing compounds selected from the group consisting of sodium nitrate, ammonium nitrate, metal ammine nitrates and guanidine nitrates.
Claim 2
Dependent Claim
72 words
A composition comprising: (a) a thermoplastic polymer and at least one primary flame retardant consisting of a chlorine or bromine containing organic compound; (b) a secondary flame retardant agent in an amount sufficient to give an improved oxygen index, said agent comprising: about 0.05 to about 15 weight percent of one or more nitrate containing compounds selected from the group consisting of sodium nitrate, ammonium nitrate, metal ammine nitrates and guanidine nitrates.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said thermoplastic polymer is an addition polymer.
Claim 4
Dependent Claim
15 words
The composition of claim 2 wherein said addition polymer is a resinous polymer of propylene.
Claim 5
Dependent Claim
14 words
The composition of claim 2 wherein said nitrate is sodium nitrate or ammonium nitrate.
Claim 6
Dependent Claim
13 words
The composition of claim 1 wherein said thermoplastic polymer is a poly(alkylene terephthalate).
Claim 7
Dependent Claim
17 words
The composition of claim 5 wherein said poly(alkylene terephthalate) contains up to 20 weight percent isophthalic acid.
Claim 8
Dependent Claim
15 words
The composition of claim 5 wherein said poly(alkylene terephthalate) is poly(ethylene terephthalate) or poly(butylene terephthalate).
Claim 9
Dependent Claim
14 words
The composition of claim 5 wherein said nitrate is sodium nitrate or ammonium nitrate.
Claim 10
Dependent Claim
25 words
A composition comprising a resinous polymer of propylene, 2.0 to 20 parts by weight tetrabromophthalic anhydride, and 0.1 to 3.0 parts by weight ammonium nitrate.
Claim 11
Dependent Claim
25 words
A composition comprising a resinous polymer of propylene, 2.0 to 20 parts by weight tetrabromophthalic anhydride, and 0.1 to 3.0 parts by weight ammonium nitrate.
Claim 12
Dependent Claim
25 words
A composition comprising a resinous polymer of styrene, 2 to 20 parts by weight tetrabromophthalic anhydride, and 0.1 to 3 parts by weight ammonium nitrate.
Claim 13
Dependent Claim
25 words
A composition comprising a resinous polymer of styrene, 2 to 20 parts by weight tetrabromophthalic anhydride, and 0.1 to 3 parts by weight ammonium nitrate.
Claim 14
Dependent Claim
24 words
A composition comprising a resinous homopoly(butylene terephthalate), 2 to 20 parts by weight tetrabromophthalic anhydride and 0.1 to 3 parts by weight ammonium nitrate.
Claim 15
Dependent Claim
24 words
A composition comprising a resinous homopoly(butylene terephthalate), 2 to 20 parts by weight tetrabromophthalic anhydride and 0.1 to 3 parts by weight 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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |