Number | Name | Date | Kind |
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2948691 | Windemuth et al. | Aug 1960 | |
4218543 | Weber et al. | Aug 1980 |
Entry |
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Polyurethane Chemistry and Technology, Part II by J. H. Saunders and K. C. Frisch, Chapter IX, 1964, Interscience Publishers, New York, N.Y. |
Journal of Organic Chem., 29, 2932 (1964), D. H. Clemens et al. |