| 摘要 |
PURPOSE:To obtain a composite sheet having excellent flame retardance, by applying a polyorganophosphazene to a fibrous sheet consisting of polyarylene based fibers and/or aromatic polyester fibers. CONSTITUTION:A polyorganophosphazene is applied to a fibrous sheet consisting of polyarylene based fibers containing >=70mol.% units having repeating units expressed by the formula, especially consisting essentially of polyphenylene sulfide and/or aromatic polyester fibers consisting of ultrafine fibers of <=0.3d size by an impregnation method, etc., to afford the aimed sheet having excellent flame retardance as a composite sheet for artificial leather without impairing useful performance thereof. |
