J. Dorsey, R. Smithwick, A. C. Rutenberg
Aug 30, 1978
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Abstract
Impurities in 4,4'-methylenebis(2,6-diisopropylaniline) (MDIPA), a curative for adhesives, were characterized by proton and fluorine nuclear magnetic resonance spectroscopy. The starting material that is used to synthesize MDIPA (2,6-diisopropylaniline) (2,6-DIPA) was also analyzed. It is now possible to identify and quantitatively measure the impurities in various batches of these materials.