Amide and/or imide containing polymers and monomers for the preparation thereof

Claim 1

Polyimides derived from at least one of the following monomers: ##STR54## wherein R' and R" are independently hydrogen, straight chain or branched C 1 to C 10 alkyl and C 6 to C 20 aryl groups; R' and R" are hydrogens; R 3 is a phenyl, a CF 3 or an alkyl group having from 1 to 10 carbon atoms; R 4 and R 5 are independently hydrogen, halogen, alkyl or alkoxy groups having from 1 to 4 carbon atoms, or aryl and aryloxy groups having from 6 to 20 carbon atoms; R 6 is independently hydrogen or an alkyl having more than one carbon atom, an aryl or aryloxy having from 6 to 20 carbon atoms; and Ar is ##STR55## wherein X can be a chemical bond, O, S, SO, SO 2 --, ##STR56## CH 2 , an alkylene or alkylidene having from 2 to 8 carbon atoms, a cycloalkylene or cycloalkylidene having from 5 to 14 carbon atoms, or a phenylene group which may be substituted by an alkyl or alkoxy group having from 2 to 4 carbon atoms, or by a halogen; the group Ar may also be selected from ##STR57## and wherein the subject monomers are used in an amount of at least 50 mole percent based on the total monomers used.