Abstract
Improved properties of fire retardant urethane foams prepared from hypobrominated lard and tallow have been obtained by purification of the polyols prior to their use. Hypobromination was carried out by epoxidation of the glycerides followed by treatment with gaseous HBr. The crude derivatives were extracted with acetone and separated from unreacted saturates at 5 C. One step hypochlorination of glycerides by use of acidified sodium hypochlorite has been carried out, and subsequent purification of the polyols led to minor foam property improvement. Fire retardant foams have also been prepared from soybean oil and monoolein using both of these general methods, although the acetone extraction step could be omitted.
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References
Saggese, E.J., M. Zubillaga, A.N. Wrigley and W.C. Ault, JAOCS 42:553–556 (1965).
Scholnick, F., H.A. Monroe, Jr., E.J. Saggese and A.N. Wrigley, Ibid. 44: 40–42 (1967).
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Findley, T.W., D. Swern and J.T. Scanlan, J. Amer. Chem. Soc. 67: 412–414 (1945).
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E. Market. Nutr. Res. Div., ARS, USDA.
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Scholnick, F., Saggese, E.J., Zubillaga, M. et al. Urethane foams from animal fats. VI. Improved properties of lard and tallow-based foams. J Am Oil Chem Soc 48, 715–717 (1971). https://doi.org/10.1007/BF02638527
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DOI: https://doi.org/10.1007/BF02638527