4.
    发明专利
    未知

    公开(公告)号:BR7402287D0

    公开(公告)日:1974-11-19

    申请号:BR228774

    申请日:1974-03-22

    Applicant: BASF AG

    Abstract: Particulate, expandable styrene polymers containing a flame-proofing organic halo compound as expanding agent and also a mixture of from 2.5 to 30% by weight of a hydrocarbon of from 3 to 6 carbon atoms and from 97.5 to 70% by weight of monofluorotrichloromethane, based on the total weight of said mixture serving as expanding agent, show good processability and exhibit self-extinguishing properties even during processing.

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