Bis( beta -carboxyethyl)isobutyl, sec. butyl and t-butyl phosphine oxide and polyamides containing the same

摘要

The compounds bis ( beta -carboxyethyl)isobutyl phosphine oxide, bis ( beta -carboxyethyl) sec. butyl phosphine oxide and bis( beta -carboxyethyl)-t-butyl phosphine oxide and their use as components in the production of fiber-forming polyamides, fibers produced from said polyamides and a method for the production of various bis (carboxyalkyl) alkyl phosphine oxides are disclosed.