CADAVERINE SALT, AQUEOUS CADAVERINE SALT SOLUTION, POLYAMIDE RESIN, MOLDED ARTICLE AND PROCESS FOR PRODUCING CADAVERINE SALT AND AQUEOUS CADAVERINE SALT SOLUTION

摘要

To improve problems of the content of trifunctional and higher organic compounds, fish-eyes of a film and its flowability in injection molding occurring in the existing techniques, the total content of trifunctional and higher organic compounds of cadaverine salts is regulated to 90 ppm or less. To improve the fish-eyes (F/E) of a polyamide resin film and its flowability in injection molding and the amount of high-molecule impurities contained in the polyamide resin, an aqueous cadaverine salt solution, from which high-molecule impurities having a molecular weight of 12,000 or more have been removed, is prepared. To easily and economically produce a cadaverine solution by which defects in the surface appearance such as fish-eyes can be prevented in the case of using it as a starting material of a polyamide resin film or the like, moreover, the amount of microbial cells employed in the reaction is regulated within a definite range.