Verfahren zur Herstellung von Harzschaumstoffpartikeln auf Polypropylenbasis, Verfahren zur Bestimmung von Harz auf Polypropylenbasis und Verfahren zur Herstellung von Harz auf Polypropylenbasis

Details

Veröffentlichungs-Nr.

EP4786531

Anmeldetag

21. Juli 2025

Veröffentlichung

5. August 2026

Rechtsraum

EP

IPC

C08J9/00, C08J9/18, B29C44/34

Abstract

[Problems] To provide a method for producing polypropylene-based resin foamed particles, a method for determining a polypropylene-based resin, and a method for producing a polypropylene-based resin, which include a recycled polypropylene-based resin and can suppress the deterioration rate of the physical properties of a molded article thereby maintaining the favorable physical properties of the molded article over a long period.[Resolution means] The method for producing polypropylene-based resin foamed particles includes a foaming step involving foaming a polypropylene-based resin composition containing a polypropylene-based resin and a foaming agent. The base resin is created using a recycled polypropylene-based resin (R). The blend amount of the polypropylene-based resin (R) in the base resin is 15 mass% or more. The melting point of the polypropylene-based resin (R) is lower than 160°C. The oxidation induction temperature T3 of the polypropylene-based resin (R), measured in accordance with ISO 11357-6:2018, is 220°C or higher.

Anmelder

Firmen

JSP International SARL
JSP Corporation

Land

🇫🇷 Frankreich

Fachgebiete