Patent US4008187A successfully refreshed from Google Patents.
US4008187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foams having reduced flammability
Assignee: Olin Corp
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Filing: 1975-01-29
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Granted: 1977-02-15
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Expires: 1995-01-29
Abstract
Abstract Polyurethane foams are prepared from compositions containing, as flame retardant additives, a select group of polyhaloalkyl phosphate esters.
Inventors
- 👤 Richard J. Turley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:42
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0038; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/091; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
73 words
A polyurethane foam prepared from a reaction mixture which comprises a flame retarding proportion of a tetrahalobutyl phosphate ester of the formula: ##STR5## wherein R represents an alkyl group having 1 to 4 carbon atoms, X represents chlorine or bromine, each Y represents independently chlorine or bromine, n represents an integer from 1 to 3, and m represents an integer from 0 to 2, with the proviso that m + n = 3.
Claim 2
Dependent Claim
73 words
A polyurethane foam prepared from a reaction mixture which comprises a flame retarding proportion of a tetrahalobutyl phosphate ester of the formula: ##STR5## wherein R represents an alkyl group having 1 to 4 carbon atoms, X represents chlorine or bromine, each Y represents independently chlorine or bromine, n represents an integer from 1 to 3, and m represents an integer from 0 to 2, with the proviso that m + n = 3.
Claim 3
Dependent Claim
26 words
A polyurethane foam of claim 1 wherein said reaction mixture comprises a polyether or polyester polyol, an organic polyisocyanate, a foaming agent, and a reaction catalyst.
Claim 4
Dependent Claim
61 words
The polyurethane foam of claim 2 wherein said tetrahalobutyl phosphate ester is represented by the formula: ##STR6## wherein R represents methyl or ethyl X represents chlorine or bromine each Y represents independently chlorine or bromine n represents an integer from 1 to 3, and m represents an integer from 0 to 2 with the proviso that m + n = 3.
Claim 5
Dependent Claim
11 words
The polyurethane foam of claim 3 wherein said Y is chlorine.
Claim 6
Dependent Claim
38 words
The polyurethane foam of claim 1 wherein said tetrahalobutyl phosphate ester is selected from the group consisting of Dimethyl 2,4,4,4-tetrachlorobutyl phosphate, Tris(2,4,4,4-tetrachlorobutyl) phosphate, Propyl bis(2,4,4,4-tetrabromobutyl) phosphate, Dibutyl 2-chloro-4,4,4-tribromobutyl phosphate, Tris(2-bromo-4,4,4-trichlorobutyl) phosphate, Methyl bis(2-bromo-4,4,4-trichlorobutyl) phosphate, and Diethyl 2-bromo-4,4,4-trichlorobutyl phosphate.
Claim 7
Dependent Claim
15 words
The polyurethane foam of claim 5 wherein said tetrahalobutyl phosphate ester is dimethyl 2,4,4,4-tetrachlorobutyl phosphate.
Claim 8
Dependent Claim
67 words
The polyurethane foam of claim 2 wherein said tetrahalobutyl phosphate ester is represented by the formula: ##STR7## wherein R represents an alkyl group having 1 to 4 carbon atoms X represents chlorine or bromine each Y represents independently chlorine or bromine n represents an integer from 1 to 3, and m represents an integer from 0 to 2 with the proviso that m + n = 3.
Claim 9
Dependent Claim
11 words
The polyurethane foam of claim 7 wherein said Y is chlorine.
Claim 10
Dependent Claim
42 words
The polyurethane foam of claim 7 wherein said tetrahalobutyl phosphate ester is selected from the group consisting of Dimethyl 1,4,4,4-tetrachloro-2-butyl phosphate, Diethyl 1-bromo-4,4,4-trichloro-2-butyl phosphate, Methyl bis(1,4,4,4-tetrachloro-2-butyl) phosphate, Dipropyl 1-chloro-4,4,4-tribromo-2-butyl phosphate, Tris (1-bromo-4,4,4-trichloro-2-butyl) phosphate, Dimethyl 1-bromo-4,4,4-trichloro-2-butyl phosphate, Dibutyl 1,4,4,4-tetrabromo-2-butyl phosphate, and Tris(1,4,4,4-tetrachloro-2-butyl) phosphate.
Claim 11
Dependent Claim
13 words
The polyurethane foam of claim 9 wherein said R is methyl or ethyl.
Claim 12
Dependent Claim
25 words
The polyurethane foam of claim 10 wherein said tetrahalobutyl phosphate ester is selected from the group consisting of dimethyl 1,4,4,4-tetrachloro-2-butyl phosphate and dimethyl 1-bromo-4,4,4-trichloro-2-butyl phosphate.
Claim 13
Dependent Claim
26 words
A flexible polyurethane foam of claim 5 wherein said polyether polyol is an oxyalkylated polyhydric alcohol having a molecular weight of about 2000 to about 7000.
Claim 14
Dependent Claim
14 words
The flexible polyurethane foam of claim 12 wherein said organic isocyanate is toluene diisocyanate.
Claim 15
Dependent Claim
20 words
The flexible polyurethane foam of claim 13 wherein said catalyst is a mixture of stannous octoate and 1,4-diazabicyclo [2,2,2] octane.
Claim 16
Dependent Claim
26 words
A flexible polyurethane foam of claim 9 wherein said polyether polyol is an oxyalkylated polyhydric alcohol having a molecular weight of about 2000 to about 7000.
Claim 17
Dependent Claim
14 words
The flexible polyurethane foam of claim 12 wherein said organic isocyanate is toluene diisocyanate.
Claim 18
Dependent Claim
20 words
The flexible polyurthane foam of claim 16 wherein said catalyst is a mixture of stannous octoate and 1,4-diazabicyclo [2,2,2] octane.
Claim 19
Dependent Claim
32 words
The polyurethane foam of claim 4 wherein said tetrahalobutyl phosphate ester is selected from the group consisting of Dimethyl 2,4,4,4-tetrachlorobutyl phosphate, Tris(2,4,4,4-tetrachlorobutyl) phosphate, Tris(2-bromo-4,4,4-trichlorobutyl) phosphate, Methyl bis(2-bromo-4,4,4-trichlorobutyl) phosphate, and Diethyl 2-bromo-4,4,4-trichlorobutyl phosphate.
Claim 20
Dependent Claim
35 words
The polyurethane foam of claim 10 wherein said tetrahalobutyl phosphate ester is selected from the group consisting of Dimethyl 1,4,4,4-tetrachloro-2-butyl phosphate, Diethyl 1-bromo-4,4,4-trichloro-2-butyl phosphate, Methyl bis(1,4,4,4-tetrachloro-2-butyl) phosphate, Tris(1-bromo-4,4,4-trichloro-2-butyl) phosphate, Dimethyl 1-bromo-4,4,4-trichloro-2-butyl phosphate, and Tris(1,4,4,4-tetrachloro-2-butyl) phosphate.
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) | 1980-02-15 | 1980-08-16 | 1981-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-15 | 1984-08-16 | 1985-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-15 | 1988-08-16 | 1989-02-15 | $7700.00 | Window Closed / Lapsed |