Improved cost effective melt processing stabilization system for spunbond polypropylene fiber resin
Publication Date: 2002-Dec-12
The IP.com Prior Art Database
New additive formulation for spunbond (SB) polypropylene (PP) has better melt processing stability than commercial SB grade formulation, based on melt flow (MF) and color control after multiple extrusion. The new formula also has improved peroxide cracking efficiency. The best mode improved formulation (A) is Irganox 3114 phenolic antioxidant (800 ppm), Ultranox 641 phosphite (745 ppm), acid acceptor like zinc oxide (200 ppm), and 550 ppm Luperox 101 peroxide to attain 38 MF in final pellet.