Explanatory notes
… a mixture of (methylene phenylamine) oligomers, which is subsequently reacted with phosgene and heat to form free … of phenol or its homologues (cresol, xylenol, etc.), or substituted phenols, with aldehydes such as formaldehyde, … from butylphenol, amylphenol, parahydroxydiphenyl or other substituted phenols. They are used mainly in the preparation …