Nylon 12, Nylon 12-Zusammensetzungen, Verfahren zur Herstellung von Nylon 12 und röhrenförmiges Formteil aus Nylon 12

摘要

Disclosed is a member of nylon 12 having a relative viscosity of from 1.9 to 3.5 when measured in 98% sulfuric acid at a concentration of 10 g/dm<3> and at 25 DEG C and a melt flow rate of 0.1 g/10 min. or more when measured at 235 DEG C under a load of 2,160 g, wherein said relative viscosity and said melt flow rate have a relationship of the following formula (I): $wherein\; eta\; r\; is\; relative\; viscosity\; and\; MFR\; is\; melt\; flow\; rate.\; The\; nylon\; 12\; has\; excellent\; extrusion\; moldability\; and\; creep\; characteristics,\; fatigue\; characteristics\; and\; the\; like\; mechanical\; properties\; and\; is\; suited\; for\; tubular\; molds.\; Anylon\; 12\; composition\; comprising\; the\; nylon\; 12\; having\; the\; above-described\; specific\; relationship\; between\; eta\; r\; and\; MFR\; and\; a\; plasticizer\; is\; also\; disclosed.$