| abstract |
PURPOSE: To obtain a wholly aromatic polyamide formed product with improved surface characteristics, by converting the amide group on the surface of a wholly aromatic polyamide formed product into alkali (alkaline earth) metal salt to effect swelling of said surface followed by treatment with polyepoxy compound. n CONSTITUTION: A formed product consisting of wholly aromatic polyamide (pref. poly-p-benzamide or poly-p-phenylene terephthalamide) is treated with a solution prepared by dissolving an alkali (alkaline earth) metal-contg. base (e.g. sodium hydride) in an aprotic polar solvent (pref. dimethylsulfoxide) to metallize the amide group on the surface of said formed product and make said surface swell followed by treatment with a solution containing a polyepoxy compound having in one molecule at least three epoxy groups (e.g. N,N,N',N'- tetraglycidyl methylenedianiline), then washing with e.g. acetone and drying, thus obtaining the objective surface-modified polyamide formed product. n COPYRIGHT: (C)1987,JPO&Japio |