Formamide group-containing copolymer, process for producing the same, and thermoplastic resin composition containing the same.

摘要

A copolymer or a salt thereof is disclosed, containing in the molecule thereof: (A) from 20 to 99.8 mole% of a recurring unit represented by formula (I), (B) from 50 to 0 mole% of a recurring unit represented by formula (II), and (C) a recurring unit containing a unit represented by formula (III), (D) a recurring unit containing a unit represented by formula (IV), and (E) a recurring unit containing a unit represented by formula (V) in a total amount of from 60 to 0.2 mole%, provided that the amount of said recurring unit (C) is at least 0.2 mole%: wherein R<1> and R<2> each independently represents a hydrogen atom, an alkyl group having from 1 to 10 carbon atoms, a cycloalkyl group having from 3 to 8 carbon atoms, an aryl group having from 6 to 10 carbon atoms, an alkenyl group having from 2 to 4 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms, an alkoxycarbonyl group having from 1 to 18 carbon atoms, an alkylcarboxyl group having from 1 to 17 carbon atoms, an alkylcarbonyl group having from 1 to 6 carbon atoms, an arylcarbonyl group having from 6 to 8 carbon atoms, a halogen atom, or a nitrile group; R<3> and R<4> each independently represents a hydrogen atom, an alkyl group having from 1 to 4 carbon atoms, an alkenyl group having from 2 to 4 carbon atoms, or a halogen atom; R<5> and R<6> each independently represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms, or an aryl group having from 6 to 8 carbon atoms; R<7> represents an alkylene group having from 1 to 12 carbon atoms, a cycloalkylene group having from 5 to 17 carbon atoms, an arylene group having from 6 to 12 carbon atoms, an arylalkylene group having from 7 to 12 carbon atoms, or a polyoxyalkylene group having from 4 to 30 carbon atoms; R<1> to R<7> may be each the same or different in each of the recurring units; and X<1> and X<2> each independently represents NH2 or NH-CHO. A process for producing the above-described copolymer or its salt is also disclosed. A thermoplastic resin composition comprising the above-described copolymer or its salt is further disclosed.