Process for producing polyamide 12 by reactive extrusion process

摘要

More particularly, the present invention relates to a polymerizable cyclic lactam monomer comprising 12 carbon atoms capable of forming a polyamide, in an amount of 0.05 to 1.0 moles per 100 moles of the monomer By weight of an alkali metal-based catalyst and 0.05 to 1.0% by mol of an acetylated caprolactam by-catalyst, and polymerizing continuously at 90 to 270C in a twin-screw extruder at a polymerization temperature of 90 to 270C. And a manufacturing method thereof.;According to the process of the present invention, the monomers can be polymerized with polyamide 12 in a short period of time and extruded in a continuous process. The polyamide 12 polymerized according to the present invention has a shorter reaction time than the polyamide resin of the same molecular weight prepared by the conventional condensation reaction and has excellent mechanical properties and is extrusion molded into pipes, , Sports goods, and the like.