LOW EMISSION POLYPROPYLENE FOAM SHEETS
    62.
    发明申请

    公开(公告)号:US20200087478A1

    公开(公告)日:2020-03-19

    申请号:US16467202

    申请日:2017-12-28

    Applicant: Borealis AG

    Abstract: The invention relates to a process for the production of a foam having low organic compounds emissions, to polypropylene foamed products obtainable by the process, and to a process for the manufacture of low organic compounds emission articles comprising a foam for use in cars and food packaging. The process comprises the steps of: a) providing a foam comprising a propylene composition comprising a high melt strength propylene (HMS-PP) homopolymer or copolymer or combinations thereof, said HMS-PP foam having a melt strength of at least 25 cN at a maximum speed of at least 200 mm/s and a melting temperature of at least 135° C. and b) subjecting the HMS-PP foam to a thermal treatment at a temperature Tt which is preferably between 5 and 15° C. below the melting temperature Tm of the HMS-PP for a duration between preferably 1 and 10 minutes.

Patent Agency Ranking