请高手指教，BIP为何物

我来也也

朋友推荐以下助剂，请帮忙翻译以下，并请指点其用途，谢谢<br />BIP<br />The mixture of N-Butyl phthalimide (BP) and N-Isopropyl Phthalimide (IP), is an excellent dyeing carrier used for dyeing fibrous material of aromatic polyamide fibers. The dye assistant comprising BIP has more advantages than others:<br />little or no obnoxious odor,<br />no corroding effect on equipment, <br />no known toxicological effect on personnel, <br />less of a pollutant than other carriers such as arylketones, <br />does not significantly degrade cellulosic fibers,<br />and may even improve fire retardancy in some application.