A method of improving the effectiveness of a photostabilizer in reducing the deleterious effects of actinic radiation on a polypropylene composition, which method involves compounding a melt-extrudable thermoplastic polypropylene composition having a melt flow rate in a range of...http://www.google.es/patents/US5738745?utm_source=gb-gplus-sharePatente US5738745 - Method of improving the photostability of polypropylene compositions
Method of improving the photostability of polypropylene compositions