N-substituted carbamoyllactam functional compounds and polylactam block copolymers derived therefrom

摘要

Disclosed are conversion products of N-substituted carbamoyllactam functional compounds characterized by the general formula: where:A represents an oxygen atom or an NH group;R represents an alkyl, aralkyl, alkaryl or aryl group, where alkyl and alkyl bound in aralkyl or alkaryl may also be cycloalkyl;P represents a residue of a compound P(AH)_x with a number average molecular weight of at least 150, with one or more OH or NH₂ groups, P(AH)_x being a liquid crystalline compound or a compound with liquid crystalline segments in the main chain and/or the side chain, or a compound which forms with lactam-­blocked polyisocyanate a compound with liquid crystalline properties;(-L-) represents an opened lactam ring;(-L) represents a non-opened lactam ring;x is a whole number higher than or equal to 1;y is equal to 0 or 1; anda is a whole number higher than or equal to 1.;Further, the present invention relates to polylactam block copolymers obtained by lactam polymerization at a lactam group.