P.F. Bruins, Polyurethane Technology, I nterscience Publishers , New York, 1969, p.181.
2.
DDI Brand Diisocyanate, General Mills Product Bulletin CDS-3-65, December 1, 9869.
3.
ASTM D 1638-70, Method A (Dibutylamine method).
4.
L. Montesano, "Room Temperature-Curing Polyurethane Casting Compounds," I and EC Product Research and Development, Vol. 3, No. 2, pp. 133-136, June, 1964.