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    5.
    发明专利
    未知

    公开(公告)号：DE2714800A1

    公开(公告)日：1978-10-12

    申请号：DE2714800

    申请日：1977-04-02

    Applicant: BASF AG

    Inventor： FRIED MICHAEL DIPL CHEM DR ,  ZUERN LUDWIG DIPL CHEM DR ,  STAHNECKER ERHARD DIPL CHEM DR

    IPC: C08J9/06 ,  C08J9/00 ,  C08J9/10 ,  C08J9/16 ,  C08L23/00

    Abstract: A process for the manufacture of cross-linked foamable moldings from olefin polymers, wherein the olefin polymer is mixed with (A) A SOLID ORGANIC BLOWING AGENT WHICH ELIMINATES GASES WHEN HEATED, (B) AN ORGANIC PEROXIDE, (C) CONVENTIONAL ADDITIVES AND (D) AN ACTIVATING ORGANIC COMPOUND WHICH LOWERS THE DECOMPOSITION TEMPERATURE OF THE PEROXIDE, AND THE MIXTURE IS MOLDED THERMOPLASTICALLY AND IS CROSSLINKED BELOW THE DECOMPOSITION TEMPERATURE OF THE BLOWING AGENT BUT ABOVE THE DECOMPOSITION TEMPERATURE OF THE ACTIVATED PEROXIDE.

    Fire-resistant material mfr. - from alkali silicate soln. by partial drying and moulding plastically and heating
    6.
    发明专利
    Fire-resistant material mfr. - from alkali silicate soln. by partial drying and moulding plastically and heating 未知

    公开(公告)号：DE2650827A1

    公开(公告)日：1978-05-11

    申请号：DE2650827

    申请日：1976-11-06

    Applicant: BASF AG

    Inventor： CAESAR ARNDT CHRISTIAN ,  ZUERN LUDWIG DIPL CHEM DR

    IPC: C04B28/26 ,  C04B30/02 ,  E04B1/94 ,  C04B43/00 ,  C04B19/04

    Abstract: A liq. mixt. of alkali silicate and water contg. 45-95 wt.% water is dried to contain 6-40% water. The mass obtd. is opt. mixed with reinforcing materials and other additive prod. and is heated to 40-110 degrees C to bring it into a plastic state. The plastic mass is shaped by pressing, either during mixing or subsequently. The moulded pieces obtd. are cooled and may be provided with esp. an alkali resistant coating. Used for mfr. of panels for preventing the progress of fire. The water is the mixt. does not have to be removed entirely from the moulded articles, but partly from the clay before moulding, so that this part of the process can be effected more rapidly and cheaply with expenditure of less energy than in prior art. Unevenness of drying causing warpage etc. are eliminated.

    Moulded bodies of foamed polyolefin - free from cavities, useful as packing and insulation material
    9.
    发明专利
    Moulded bodies of foamed polyolefin - free from cavities, useful as packing and insulation material 未知

    公开(公告)号：DE2331305A1

    公开(公告)日：1975-01-23

    申请号：DE2331305

    申请日：1973-06-20

    Applicant: BASF AG

    Inventor： TATZEL HERMANN ,  KOEGEL WOLFRAM ,  BECK GILBERT DIPL CHEM ,  ZUERN LUDWIG DIPL CHEM DR ,  CAESAR ARNDT CHRISTIAN

    IPC: C08J9/236 ,  C08J9/22 ,  C08L23/00

    Abstract: Prodn. of moulded bodies comprises mixing finely divided foam-forming polyolefin particles with 0.3 to 4 g., pref. 0.6-2 g., (per 1. of polyolefin) of a solvent-free hardenable blinder, pressing together the mixt. to 5-70% (pref. 40-70%) of its bulk volume, and hardening under pressure, and introducing needles of dia. is not >5 mm, into the mixt. before, during or after the step of pressing the mixt. and removing the needles again before the hardening step. The polymers are derived from 2-4C olefins, and have an X-ray crystallinity at 25 degrees C >25 wt%., e.g. homopolymers or copolymers of ethylene and propylene; esp. copolymers of ethylene with esters of (meth)acrylic acid or vinylcarboxylic acid esters contg. >=50 wt% of ethylene units. The introduction and removal of the needles forms channels through which air can escape from the mixt. and the resulting moulded bodies are free from cavities. The prods. can be used for forming shock-absorbing packing matl., sound-absorbing plates, and insulation in the building industry.

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