Antioxidant aromatic fluorophosphites

An aromatic fluorophosphorus compound suitable for use as an antioxidant said compound being selected from fluorophosphorus compounds having the structure:

• (RO--) P (--F).sub.2 Formula V
• wherein R is an substituted aryl group wherein the substituents are tert-alkyl groups:
• (R'O--).sub.2 P-F Formula VI
• wherein R'is a substituted aryl group wherein the substituents are selected from sec-alkyl, tert-alkyl, aralkyl, cycloalkyl, hydroxy, alkoxy, aryloxy, halo, acyloxy, and alkoxy carbonylalkyl:
• ##STR16## wherein R.sup.1 and R.sup.2 are substituted or unsubstituted aryl groups wherein the substituent are selected from alkyl, aryl, aralkyl, cycloalkyl, hydroxy, alkoxy, aryloxy, and halo:
• and X is selected from the group consisting of a single bond connecting R.sup.1 and R.sup.2 and divalent bridging groups selected from divalent aliphatic hydrocarbon groups containing 1-12 carbon atoms, --O-- and --S.sub.q -- wherein q is an integer from 1 to 3:
• ##STR17## wherein R is a substituted or unsubstituted aryl group wherein the substituents are selected from alkyl, aryl, aralkyl, cycloalkyl, hydroxy, alkoxy, aryloxy, halo, alkoxycarbonyl, alkoxycarbonylalkyl and acyloxy, and R.sup.3 is selected from the group consisting of alkyl, cycloalkyl, aralkyl, aryl, substituted aryl, alkoxy, cycloalkoxy and aralkoxy;
• and ##STR18## wherein A is a mono- or poly-nuclear aromatic group, R.sup.4 is independently selected from fluorine, aryloxy, alkylaryloxy,alkoxy and polyalkoxy, r is an integer from 1 to 4, s is an integer from 0 to 3 and (r+s) equals the valence of A.