US4404297A
Expired / Lapsed
US
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Intumescent fire retardant compositions
Assignee: Bromine Compounds Ltd
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Filing: 1983-01-07
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Granted: 1983-09-13
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Expires: 2003-01-07
Abstract
Abstract The present invention relates to intumescent fire retardant compositions for polymers such as olefin polymers, polyester resins, polyurethane resins etc. According to the invention, the intumescent fire retardant compositions contain a thermolized product obtained from a system comprising P2O5 or a P2O5-precursor together with triethanolamine. The ratio between the constituents is between 0.5 to 2.0 parts by weight P2O5 to 1 part triethanolamine. The intumescent fire retardant compositions according to the present invention obviate the need for using of halogen-containing fire retardants which produce acid vapors during decomposition.
Inventors
- 👤 Theodor Fishler
- 👤 Manny Ravey
- 👤 Leonard M. Shorr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:05
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32; C08K11/00; Y; Y10; Y10S; Y10S521/00; Y10S521/906; Y10S521/907
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
65 words
Intumescent fire retardant synthetic organic polymer compositions containing a thermolized product wherein the thermolysis is carried out above 160° C., said product being obtained from a system comprising P 2 O 5 or a P 2 O 5 --precursor together with triethanolamine, the weight ratio of the components in said system being between 0.05 to 2.0 parts P 2 O 5 to 1 part triethanolamine.
Claim 2
Dependent Claim
65 words
Intumescent fire retardant synthetic organic polymer compositions containing a thermolized product wherein the thermolysis is carried out above 160° C., said product being obtained from a system comprising P 2 O 5 or a P 2 O 5 --precursor together with triethanolamine, the weight ratio of the components in said system being between 0.05 to 2.0 parts P 2 O 5 to 1 part triethanolamine.
Claim 3
Dependent Claim
31 words
Intumescent fire retardant compositions according to claim 1, wherein the weight ratio of the components in said system is 0.1 to 1 part P 2 O 5 to 1 part triethanolamine.
Claim 4
Dependent Claim
35 words
Intumescent fire retardant compositions according to claim 1, wherein said P 2 O 5 --precursor is selected from a group consisting of phosphoric acid, polyphosphoric acid, pyrophosphoric acid or their ammonium salts and melamine phosphate.
Claim 5
Dependent Claim
24 words
Intumescent fire retardant compositions according to claim 1, wherein other reagents known to enhance the spumific and carbonifying effects are incorporated in said system.
Claim 6
Dependent Claim
19 words
Intumescent fire retardant compositions according to claim 4, wherein pentaerythritol is utilized as an enhancer of the carbonifying effect.
Claim 7
Dependent Claim
14 words
Intumescent fire retardant compositions according to claim 1, wherein brominated compounds are incorporated therein.
Claim 8
Dependent Claim
16 words
Intumescent fire retardant compositions according to claim 6, wherein said brominated compound is a brominated alcohol.
Claim 9
Dependent Claim
20 words
Intumescent fire retardant compositions according to claim 1, wherein the fire retardant system is admixed with the polymer and thermolized.
Claim 10
Dependent Claim
21 words
Intumescent fire retardant compositions according to claim 1, wherein the thermolized product is pulverized prior to its incorporation into the polymer.
Claim 11
Dependent Claim
22 words
The compositions according to claim 1, wherein every 100 parts of polymer contain about 5 to 70 parts of flame retardant composition.
Claim 12
Dependent Claim
12 words
The compositions according to claim 10, wherein said polymer is a polyolefin.
Claim 13
Dependent Claim
11 words
The compositions according to claim 11, wherein said polyolefin is polypropylene.
Claim 14
Dependent Claim
11 words
The compositions according to claim 11, wherein said polyolefin is polyethylene.
Claim 15
Dependent Claim
11 words
The compositions according to claim 10, wherein said polymer is polyurethane.
Claim 16
Dependent Claim
14 words
The compositions according to claim 10, wherein said polymer is an unsaturated polyester resin.
Claim 17
Dependent Claim
35 words
Intumescent fire retardant compositions according to claim 2 wherein said P 2 O 5 -precursor is selected from a group consisting of phosphoric acid, polyphosphoric acid, pyrophosphoric acid or their ammonium salts and melamine phosphate.
Claim 18
Dependent Claim
24 words
Intumescent fire retardant compositions according to claim 2, wherein other reagents known to enhance the spumific and carbonifying effects are incorporated in said system.
Claim 19
Dependent Claim
14 words
Intumescent fire retardant compositions according to claim 2, wherein brominated compounds are incorporated therein.
References Cited (Backward Citations)
US2880183A
Cited
US2880182A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-09-12 | 1987-03-14 | 1987-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-12 | 1991-03-14 | 1991-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-12 | 1995-03-14 | 1995-09-13 | $7700.00 | Window Closed / Lapsed |