Claims
- 1. An active hydrogen-containing composition suitable for the production of flexible polyurethane foam when reacted with a polyisocyanate, said composition comprising,
- (a) a polyol having an average functionality of about 2.0 to about 4.0, having at least about 50% of its active hydroxyl groups in the form of primary hydroxyl groups, and an equivalent weight from about 500 to about 5000;
- (b) from about 0.5 to about 5 parts, per 100 parts by weight of component (a) of a crosslinker selected from the group consisting of monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, methylene bis(o-chloroaniline) and mixtures thereof; and
- (c) at least about 0.15 equivalent per equivalent of (a) and (b), of a polyfunctional flame retarding additive having an equivalent weight of less than about 300, which flame retarding additive is selected from the group consisting of (i) hydroxyl-terminated alkanes having a plurality of primary hydroxyl groups, (ii) alkylene ethers and polyethers having a plurality of primary hydroxyl groups, (iii) polyurea compounds having at least 2 hydroxyalkyl groups which are attached to a urea nitrogen atom, (iv) polycarbamates having a plurality of primary hydroxyl groups or a plurality of primary or secondary hydroxyl-containing hydroxyalkyl groups attached to a tertiary nitrogen atom.
- 2. The composition of claim 1 wherein about 0.3 to about 1.0 equivalent of said flame retarding additive is present per equivalent of components (a) and (b).
- 3. The composition of claim 2 wherein component (c) comprises a primary hydroxyl-terminated alkane.
- 4. The composition of claim 3 wherein component (c) comprises an .alpha.,.omega.-alkylene glycol or glycerine.
- 5. The composition of claim 4 wherein component (b) comprises diethanolamine.
- 6. The composition of claim 5 further comprising a blowing agent, a catalyst for the reaction of the polyol with said polyisocyanate, and a silicone surfactant.
- 7. The composition of claim 6 containing about 1.0 to about 2.5 parts of component (b) per 100 parts by weight component (a), and about 1 to about 6 parts by weight of component (c) per 100 parts component (a).
- 8. The composition of claim 7 wherein component (a) comprises a polyether polyol or mixture thereof having an average equivalent weight of about 1000 to about 2000.
- 9. The composition of claim 8 wherein a portion of component (a) comprises a polymer polyol.
- 10. The composition of claim 8 wherein component (c) is glycerine.
- 11. The composition of claim 2 wherein component (c) comprises an adduct of a diisocyanate and a mono- or dialkanol amine.
- 12. The composition of claim 11 wherein component (b) comprises diethanolamine.
- 13. The composition of claim 12 further comprising a blowing agent, a catalyst for the reaction of the polyol with said polyisocyanate, and a silicone surfactant.
- 14. The composition of claim 13 containing about 1.0 to about 2.5 parts of component (b) per 100 parts by weight component (a), and about 4 to about 12 parts by weight of component (c) per 100 parts component (a).
- 15. The composition of claim 14 wherein component (a) comprises a polyether polyol or mixture thereof having an average equivalent weight of about 1000 to about 2000.
- 16. The composition of claim 15 wherein a portion of component (a) comprises a polymer polyol.
- 17. The composition of claim 15 wherein component (c) contains a plurality of primary hydroxyl groups.
- 18. The composition of claim 17 wherein component (c) comprises a reaction product of a diisocyanate with 2-amino-2-methylpropanol or 2-amino-2-methylol-1-butanol.
- 19. The composition of claim 2 wherein component (c) comprises an alkylene ether or polyether having a plurality of primary hydroxyl groups.
- 20. The composition of claim 19 wherein component (b) comprises diethanolamine.
- 21. The composition of claim 20 further comprising a blowing agent, a catalyst for the reaction of the polyol with said polyisocyanate, and a silicone surfactant.
- 22. The composition of claim 21 containing about 1.0 to about 2.5 parts of component (b) per 100 parts by weight component (a), and about 1 to about 6 parts by weight of component (c) per 100 parts component (a).
- 23. The composition of claim 22 wherein component (a) comprises a polyether polyol or mixture thereof having an average equivalent weight of about 1000 to about 2000.
- 24. The composition of claim 23 wherein a portion of component (a) comprises a polymer polyol.
- 25. The composition of claim 23 wherein component (c) comprises diethylene glycol or triethylene glycol.
- 26. The composition of claim 2 wherein component (c) comprises a polycarbamate having a plurality of primary hydroxyl groups or a plurality of primary or secondary hydroxyl-containing hydoxyalkyl groups attached to a tertiary nitrogen atom.
- 27. The composition of claim 26 wherein component (b) comprises diethanolamine.
- 28. The composition of claim 27 further comprising a blowing agent, a catalyst for the reaction of the polyol with said polyisocyanate, and a silicone surfactant.
- 29. The composition of claim 28 containing about 1.0 to about 2.5 parts of component (b) per 100 parts by weight component (a), and about 4 to about 12 parts by weight of component (c) per 100 parts component (a).
- 30. The composition of claim 29 wherein component (a) comprises a polyether polyol or mixture thereof having an average equivalent weight of about 1000 to about 2000.
- 31. The composition of claim 30 wherein a portion of component (a) comprises a polymer polyol.
- 32. The composition of claim 30 wherein component (c) comprises the reaction product of a diisocyanate and glycerine or an .alpha.,.omega.-alkylene glycol.
- 33. A polyurethane foam prepared in the reaction of a polyisocyanate with the composition of claim 1, 9, 17, 24, or 30.
- 34. The foam of claim 33 which is a molded foam.
- 35. The foam of claim 33 which is a slabstock foam.
- 36. The foam of claim 33 having a density from about 1 to about 3.5 pounds per cubic foot.
CROSS REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 868,870 filed May 30, 1986, now abandoned.
US Referenced Citations (15)
Continuations (1)
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Number |
Date |
Country |
Parent |
868870 |
May 1986 |
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