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21 records (took 0.022 seconds)

    1.
    发明专利
    未知

    公开(公告)号：DE19812858A1

    公开(公告)日：1999-09-30

    申请号：DE19812858

    申请日：1998-03-24

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD ,  HAHN KLAUS ,  GELLERT ROLAND

    IPC: C08F2/18 ,  C08F12/08 ,  C08F257/02 ,  C08J9/20

    Abstract: The invention relates to a method for producing styrene polymers containing water as only inflating agent by polymerising styrene in an aqueous suspension. Polymerisation is carried out in the presence of between 5 and 30 weight % recycled EPS dissolved in styrene, which contains the usual coating agents originating from EPS production.

    3.
    发明专利
    未知

    公开(公告)号：AT251655T

    公开(公告)日：2003-10-15

    申请号：AT99913279

    申请日：1999-03-19

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD ,  HAHN KLAUS ,  GELLERT ROLAND

    IPC: B29C44/34 ,  C08J9/22 ,  C08L25/04

    Abstract: The invention relates to a process for the preparation of expanded polystyrene particles in which polystyrene beads containing water as the sole expanding agent are expanded. The process involves the following stages:A) the polystyrene beads are pre-expanded at temperatures above 100° C.,B) the pre-expanded particles are dried in dry air at temperatures between 20° and 95° C. over a period of from 1 to 10 hours,C) the dried expanded particles are further expanded with steam at temperatures ranging from 100° to 140° C., andD) the stages b and c are repeated as often as is necessary to achieve the desired bulk density.

    6.
    发明专利
    未知

    公开(公告)号：ES2209415T3

    公开(公告)日：2004-06-16

    申请号：ES99913279

    申请日：1999-03-19

    Applicant: BASF AG

    Inventor： GLUCK GUISCARD ,  HAHN KLAUS ,  GELLERT ROLAND

    IPC: B29C44/34 ,  C08J9/22

    Abstract: The invention relates to a process for the preparation of expanded polystyrene particles in which polystyrene beads containing water as the sole expanding agent are expanded. The process involves the following stages:A) the polystyrene beads are pre-expanded at temperatures above 100° C.,B) the pre-expanded particles are dried in dry air at temperatures between 20° and 95° C. over a period of from 1 to 10 hours,C) the dried expanded particles are further expanded with steam at temperatures ranging from 100° to 140° C., andD) the stages b and c are repeated as often as is necessary to achieve the desired bulk density.

    7.
    发明专利
    未知

    公开(公告)号：AT207508T

    公开(公告)日：2001-11-15

    申请号：AT99913278

    申请日：1999-03-19

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD ,  HAHN KLAUS ,  GELLERT ROLAND

    IPC: C08F2/18 ,  C08F12/08 ,  C08F257/02 ,  C08J9/20

    Abstract: The invention relates to a process for preparing styrene polymers comprising water as sole blowing agent, by polymerizing styrene in aqueous suspension. The polymerization is carried out in the presence of from 5 to 30% by weight of recycled EPS material dissolved in styrene and comprising customary coating agents deriving from production of the EPS.

    8.
    发明专利
    未知

    公开(公告)号：DE19812854A1

    公开(公告)日：1999-09-30

    申请号：DE19812854

    申请日：1998-03-24

    Applicant: BASF AG

    Inventor： GLUECK GUISCARD ,  HAHN KLAUS ,  GELLERT ROLAND

    IPC: B29C44/34 ,  C08J9/22 ,  C08L25/04 ,  C08J9/28

    Abstract: The invention relates to a method for producing polystyrene foam particles, according to which polystyrene beads containing water as only inflating agent are expanded. The method comprises the following steps: a) the polystyrene beads are expanded at temperatures above 100 DEG C; b) the expanded beads are dried in dry air at between 20 and 95 DEG C for between 1 and 10 hours; c) the dried particles are expanded further at between 100 and 140 DEG C using water vapour; and d) steps b) and c) are repeated until the desired bulk density is obtained.

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