A New Approach to the Preparation of Rigid Urethane Foams Having Reduced Flame Spread and Smoke Levels

Hilado, C. , "Flammability Characteristics of Cellular Plastics" IND. ENG. CHEM. PROD. RES. DEVELOP., Vol. 6, No. 3, September, 1967, pp. 154-166.

Vandersall, H.L. , "The Use of a Small Flame Tunnel for Evaluating Fire Hazard", JOURNAL OF PAINT TECHNOLOGY, Vol. 39, No. 511, August, 1967, p. 499.

Am. Soc. Testing Materials, "ASTM Standards" Part 14, ( 1971 ), pp. 395-403.

Am. Soc. Testing Materials, "ASTM Standards", Part 27, ( 1971 ), pp. 512-515.

Gross, D. , Loftus, J.J. , and Robertson, A.F. , ASTM STP 422, Am. Soc. Testing Materials, (1967), pp. 166-206.

Wismer, M. , Foote, J. , Peffer, J. , and LeBras, L. , (to PPG Industries), U.S. Patent 3,153,002, Oct. 13, 1964.

Saunders, J.H. , and Frisch, K.C. , "Polyurethanes, Part 1, Chemistry", Interscience Publishers, Wiley and Sons, New York, N.Y., 1962, p. 186.

Ibid., p. 197.

Doerge, H.P. , and Wismer, M. , (to PPG Industries), U.S. Patent 3,639,307, Feb. 1, 1972.