Claims
- 1. A fire retardant composition comprising, in intimate admixture, a polymeric material selected from the group consisting of polyurethanes, cellulosics, polyolefins, polyesters, vinyl polymers, polyacrylics, polyethers, polyacetals, polyphenolics, and rubber in combination with and as a fire retardant therefor, a haloalkyl N,N-dialkylphosphoramidate selected from the group consisting of 2,3-dihalopropyl N,N dialkylphosphoramidates and 2-(1,3-dihalopropyl) N,N-dialkylphosphoramidates wherein said halo substituent is selected from the group consisting of chloro and bromo, and the alkyl group attached to said "N" being an alkyl radical of from 1 to 4 carbon atoms.
- 2. A fire retardant composition as recited in claim 1 wherein said polymeric material is a polyurethane.
- 3. A fire retardant composition as recited in claim 1 wherein said halo substituent is bromo.
- 4. A fire retardant composition as recited in claim 1 wherein said alkyl groups attached to said "N" are methyl.
- 5. A fire retardant composition as recited in claim 1 wherein said fire retardant is a 2,3-dihalopropylphosphoramidate.
- 6. A fire retardant composition as recited in claim 1 wherein said fire retardant is selected from the group consisting of bis(2,3-dichloropropyl)N,N-dimethyl phosphoramidate, bis(2,3-dibromopropyl)N,N-dimethyl phosphoramidate, bis[2-(1,3-dichloropropyl)]N,N-dimethyl phosphoramidate and bis[2-(1,3-dibromopropyl)]N,N-dimethyl phosphoramidate.
- 7. A fire retardant composition as recited in claim 1 wherein said polymeric material is a cellulosic of the viscose rayon or cellulose acetate type.
- 8. In a process for preparing fire retardant polymer compositions which comprise, in intimate admixture, a polymer selected from the group consisting of polyurethanes, cellulosics, vinyl polymers, polyolefins, polyesters, polyethers, polyacetals, polyepoxies, polyphenolics, and rubber, and a fire retardant compound, the improvement which comprises adding, as said fire retardant an effective amount of a haloalkyl N,N-dialkylphosphoramidate selected from the group consisting of 2,3-dihalopropyl N,N dialkylphosphoramidates and 2-(1,3dihalopropyl) N,N-dialkylphosphoramidates wherein said halo substituent is selected from the group consisting of chloro and bromo, and the alkyl group attached to said "N" being an alkyl radical of from 1 to 4 carbon atoms.
Parent Case Info
This is a continuation of application Ser. No. 69,157 filed Sept. 2, 1970 now abandoned.
US Referenced Citations (4)
Non-Patent Literature Citations (1)
Entry |
Journal of Applied Chemistry, vol. 14, No. 6, June, 1964, pp. 221 to 228, article by Arni et al. |
Continuations (1)
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Number |
Date |
Country |
Parent |
69157 |
Sep 1970 |
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