abstract |
(57) [Summary] [Purpose] To obtain a polyamide-imide varnish that exhibits excellent lubricity and in which fine particles of fluororesin do not aggregate, precipitate, or separate. [Structure] Fluorine resin fine powder is allowed to coexist when synthesizing polyamide-imide. The fluororesin fine powder and the polyamide-imide are chemically bonded, and the dispersibility is improved. |