Polypropylene resin compositions

A polypropylene resin composition which is excellent in transparency and which shows very low pH reduction of the extract obtained in a promoted hot water-extraction test of a polypropylene resin which has been irradiated with radiant rays for sterilization. The polypropylene resin composition compr...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KAWAI, YOICHI, YOKOTE, SACHIO, MISUMI, MASAKI
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A polypropylene resin composition which is excellent in transparency and which shows very low pH reduction of the extract obtained in a promoted hot water-extraction test of a polypropylene resin which has been irradiated with radiant rays for sterilization. The polypropylene resin composition comprises 100 parts by weight of a polypropylene resin, 0.01 to 1.0 part by weight of a metal diarylphosphate represented by the following general formula (I): (wherein R1 and R2 each represents a hydrogen atom or an alkyl group; M represents an alkali metal or an alkaline earth metal; n is an integer of 1 or 2; and A represents an alkylidene group); and 0,001 to 1.0 part by weight of a hydroxide of an alkali metal, an alkaline earth metal or an element of the aluminum group. The polypropylene resin composition is suitable for use in making medical instruments, containers for foods or the like.