2.
    发明专利
    未知

    公开(公告)号:NO970804L

    公开(公告)日:1997-04-21

    申请号:NO970804

    申请日:1997-02-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03190 Sec. 371 Date Feb. 24, 1997 Sec. 102(e) Date Feb. 24, 1997 PCT Filed Aug. 11, 1995 PCT Pub. No. WO96/06129 PCT Pub. Date Feb. 29, 1996The invention relates to a process for the production of expanded polyolefin beads by impregnating polyolefin particles with volatile blowing agents in a fluidized bed.

    5.
    发明专利
    未知

    公开(公告)号:NO970804D0

    公开(公告)日:1997-02-21

    申请号:NO970804

    申请日:1997-02-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP95/03190 Sec. 371 Date Feb. 24, 1997 Sec. 102(e) Date Feb. 24, 1997 PCT Filed Aug. 11, 1995 PCT Pub. No. WO96/06129 PCT Pub. Date Feb. 29, 1996The invention relates to a process for the production of expanded polyolefin beads by impregnating polyolefin particles with volatile blowing agents in a fluidized bed.

    Particulate expandable olefin polymerizate, useful in preparation of foamed materials, has specified properties and comprises halogen-free propellant

    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

    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.

    7.
    发明专利
    未知

    公开(公告)号:BR9811352A

    公开(公告)日:2000-09-12

    申请号:BR9811352

    申请日:1998-08-20

    Applicant: BASF AG

    Abstract: A process comprises producing expanded polyolefin particles by impregnating polyolefin granules with a volatile blowing agent in suspension under pressure, and then releasing the pressure. The suspension medium has a lower density than the polyolefin granules and the suspension is practically free from suspension agents.

    10.
    发明专利
    未知

    公开(公告)号:BR9608801A

    公开(公告)日:1999-02-17

    申请号:BR9608801

    申请日:1996-05-17

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02116 Sec. 371 Date Nov. 24, 1997 Sec. 102(e) Date Nov. 24, 1997 PCT Filed May 17, 1996 PCT Pub. No. WO96/37541 PCT Pub. Date Nov. 28, 1996Expanded polyolefin particles are produced by impregnation of polyolefin granules with a volatile blowing agent in suspension under pressure and subsequent decompression. The blowing agent used is ammonia.

Patent Agency Ranking