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101 records (took 0.023 seconds)

    91.
    发明专利
    未知

    公开(公告)号：DE59901144D1

    公开(公告)日：2002-05-08

    申请号：DE59901144

    申请日：1999-07-12

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD

    IPC: C08J9/20 ,  C08F2/44 ,  C08F12/08 ,  C08J9/00 ,  C08J9/16 ,  C08K3/04 ,  C08K7/04 ,  C08L25/04

    Abstract: The invention relates to a process for the preparation of expandable able styrene polymers containing particles of graphite by polymerization merization of styrene in aqueous suspension in the presence of particles of graphite having a mass density of less than 1.8 g/cm3.

    94.
    发明专利
    未知

    公开(公告)号：BR9915378A

    公开(公告)日：2001-07-31

    申请号：BR9915378

    申请日：1999-11-05

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD

    IPC: C08J9/00 ,  C08J9/16 ,  C08K3/04 ,  C08L25/04

    Abstract: The invention relates to expandable polystyrene beads which comprise graphite particles with an average particle size of more than 50 mum, and also to a process for their preparation by free-radical polymerization of styrene in aqueous suspension. The graphite particles, suspended in styrene, are added to the polymerization mixture at a conversion of from 10 to 100%.

    97.
    发明专利
    未知

    公开(公告)号：DE19852678A1

    公开(公告)日：2000-05-18

    申请号：DE19852678

    申请日：1998-11-16

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD

    IPC: C08J9/00 ,  C08J9/16 ,  C08K3/04 ,  C08L25/04 ,  C08L25/06

    Abstract: The invention relates to particulate, expandable styrene polymers containing graphite particles with an average particle size of more than 50 mu m, and to a method for producing said styrene polymers by radical polymerisation of styrene in aqueous suspension, the graphite particles, which are suspended in styrene, being added to the polymerisation charge with a conversion of 10 to 100 %.

    Expandable slightly foamed styrene polymerizate particles of coarse cell structure, useful as insulating or packing materials
    100.
    发明专利
    Expandable slightly foamed styrene polymerizate particles of coarse cell structure, useful as insulating or packing materials 未知

    公开(公告)号：DE19819058A1

    公开(公告)日：1999-11-04

    申请号：DE19819058

    申请日：1998-04-29

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD ,  BATSCHEIDER KARL-HEINZ

    IPC: B29C44/34 ,  C08J9/00 ,  C08J9/16 ,  C08J9/22 ,  C08L25/06 ,  C08J9/20

    Abstract: Expandable slightly foamed styrene polymerizate (ESP) particles have a coarse cell structure so that their bulk density is 0.1-20% lower than the initial bulk density of the unformed ESP particles. Independent claims are included for: (1) production of slightly foamed ESP particles by extrusion of a polystyrene melt containing a propellant in a water bath, cooling of the melt strand, and underwater granulation of the cooled strand. The water bath is held at a temperature of 50-90 deg C and is optionally in a closed system in which the pressure is 2-20 bar; (2) production of slightly foamed ESP particles by suspension polymerization of styrene in the presence of a propellant at increased temperature and pressure, cooling to 60-90 deg C, and evaporation of the suspension; (3) production of slightly foamed ESP particles by mixing the particles with conventional coating agents in a mixing unit at a temperature of 60-90 deg C; (4) production of slightly foamed ESP particles by treatment of the particles with hot air or steam for 0.5-5 seconds at 60-100 deg C; (5) production of foamed ESP particles of coarse cell structure corresponding to a cell number of 1-6 cells per mm at a bulk density of 8-20 g/liter obtained as in (4) above.

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