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123 records (took 0.025 seconds)

    61.
    发明专利
    未知

    公开(公告)号：DE50011131D1

    公开(公告)日：2005-10-13

    申请号：DE50011131

    申请日：2000-10-10

    Applicant: BASF AG

    Inventor： MALETZKO CHRISTIAN ,  HAHN KLAUS ,  DE GRAVE ISIDOR ,  EHRMANN GERD ,  DIETZEN FRANZ-JOSEF

    IPC: C08J9/16 ,  C08J9/18

    Abstract: The invention relates to expandable olefin bead polymers which comprise a blowing agent with a boiling point of from -5 to 150° C., selected from the group consisting of alkanes, alkanols, ketones, ethers and esters. The particles are unfoamed and have a bulk density above 500 g/l, and can be foamed to a bulk density below 200 g/l after storage for one hour at room temperature in free contact with the atmosphere. They are prepared by impregnating polyolefin pellets in suspension in a pressure vessel with the blowing agent, cooling the batch below 100° C., reducing the pressure and isolating the particles.

    66.
    发明专利
    未知

    公开(公告)号：NO20021852L

    公开(公告)日：2002-06-03

    申请号：NO20021852

    申请日：2002-04-19

    Applicant: BASF AG

    Inventor： MALETZKO CHRISTIAN ,  HAHN KLAUS ,  GRAVE ISIDOR DE ,  EHRMANN GERD ,  DIETZEN FRANZ-JOSEF

    IPC: C08J9/16 ,  C08J9/18 ,  C08L23/10

    Abstract: The invention relates to expandable olefin bead polymers which comprise a blowing agent with a boiling point of from -5 to 150° C., selected from the group consisting of alkanes, alkanols, ketones, ethers and esters. The particles are unfoamed and have a bulk density above 500 g/l, and can be foamed to a bulk density below 200 g/l after storage for one hour at room temperature in free contact with the atmosphere. They are prepared by impregnating polyolefin pellets in suspension in a pressure vessel with the blowing agent, cooling the batch below 100° C., reducing the pressure and isolating the particles.

    Particulate expandable olefin polymerizate, useful in preparation of foamed materials, has specified properties and comprises halogen-free propellant
    70.
    发明专利
    Particulate expandable olefin polymerizate, useful in preparation of foamed materials, has specified properties and comprises halogen-free propellant 未知

    公开(公告)号：DE19950420A1

    公开(公告)日：2001-04-26

    申请号：DE19950420

    申请日：1999-10-20

    Applicant: BASF AG

    Inventor： MALETZKO CHRISTIAN ,  HAHN KLAUS ,  GRAVE ISIDOOR DE ,  EHRMANN GERD ,  DIETZEN FRANZ-JOSEF

    IPC: C08J9/16 ,  C08J9/18 ,  C08J9/04

    Abstract: A particulate expandable olefin polymerizate, comprises non-foamed particles having a bulk density of more than 400 g/liter, which can be lowered to 200 g/liter after foaming for 30 minutes at room temperature in a free atmosphere followed by heating to a temperature exceeding 100 deg C. A particulate expandable olefin polymerizate, comprises non-foamed particles having a bulk density of more than 400 g/liter, which can be lowered to 200 g/liter after foaming for 30 minutes at room temperature in a free atmosphere followed by heating to a temperature exceeding 100 deg C. The particulate can be mixed with up to 50 wt.% of a thermoplastic of glass transition temperature below 180 deg C, and 1-40 wt.% of an organic propellant of boiling point -5 to 150 deg C. An Independent claim is also included for the preparation of the polymerizate by impregnation of a polyolefin granulate with 2-50 wt.% of an organic propellant of boiling point -5 to 150 deg C suspension in a pressurized container at increased temperature, followed by expansion, separation and washing of the impregnated granulate, with cooling to below 100 deg C before expansion.

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