POLYAMIDEIMIDE RESIN, SEAMLESS PIPE BODY, COATING FILM, COATING FILM PLATE, AND HEAT-RESISTANT COATING MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide a polyamideimide resin that can form a coating film and a seamless pipe body excellent in tear strength and elongation at break.

SOLUTION: The polyamideimide resin is obtained by reacting: (a) a polycarboxylic acid component that makes a trivalent or more polycarboxylic acid anhydride having an acid anhydride group and a carboxyl group an essential component; (b) 2,2'-dimethyl-4,4'-diaminobiphenylimide dicarboxylic acid shown by the formula; and (c) an aromatic polyisocyanate compound, in a basic polar solvent.

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