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    PROCESS FOR PREPARING VINYL CHLORIDE POLYMERIZATE
    2.
    发明专利
    PROCESS FOR PREPARING VINYL CHLORIDE POLYMERIZATE 未知

    公开(公告)号：YU70671A

    公开(公告)日：1982-02-28

    申请号：YU70671

    申请日：1971-03-19

    Applicant: HOECHST AG

    Inventor： CZEKAY A ,  KRAEMER B ,  KAISER K

    IPC: C08F14/06 ,  C08F2/18 ,  C08F3/30

    Abstract: 1295597 Polymerizing vinyl chloride KNAPSACK AG 19 April 1971 [24 March 1970] 24683/71 Heading C3P Vinyl chloride is polymerized in aqueous suspension at 55-65‹C. and the particle size distribution is controlled by changing the speed of stirring at least once, increasing the speed to increase the proportion of coarse particles and decreasing to increase the proportion of fine particles.

    DEGASIFICATION COLUMN
    4.
    发明专利
    DEGASIFICATION COLUMN 未知

    公开(公告)号：YU104478A

    公开(公告)日：1982-10-31

    申请号：YU104478

    申请日：1978-04-28

    Applicant: HOECHST AG

    Inventor： KUXDORF B ,  WISSEL K ,  KAISER K

    IPC: B01D3/22 ,  B01D3/38 ,  B01D19/00 ,  B01D3/24

    Abstract: A degassing column comprising a tubular shell provided with a plurality of apertured plates; the plates are vertically spaced within said shell; a gap uniform in width over the periphery is left between each plate and said shell; each of said plates is penetrated by at least one eccentrically arranged conduit comprising a draining shaft in the upper portion thereof and a feed shaft in the lower portion below the penetrated plate; the apertures in said plates have a diameter of less than 5 mm; and a surface portion of each plate underneath each conduit is impermeable, said impermeable surface portion being one to two times the cross-section of said conduit. More specifically, each plate is supported by a plurality of generally wedge-shaped mountings fastened to the inside of the shell, and by a ring which is level with the said mountings and is fastened to the inside of the shell, the ring being interrupted at least in the regions of the said mountings. A capping sleeve is slipped over each draining shaft. The capping sleeve comprises an upper portion whose cross-section is similar to that of the draining shaft, and a lower portion of larger cross-section, which lower portion overlaps and is securely connected to the upper portion.

    7.
    发明专利
    未知

    公开(公告)号：SE423319B

    公开(公告)日：1982-05-03

    申请号：SE7804817

    申请日：1978-04-26

    Applicant: HOECHST AG

    Inventor： KUXDORF B ,  WISSEL K ,  KAISER K

    IPC: B01D3/22 ,  B01D3/38 ,  B01D19/00

    Abstract: A degassing column comprising a tubular shell provided with a plurality of apertured plates; the plates are vertically spaced within said shell; a gap uniform in width over the periphery is left between each plate and said shell; each of said plates is penetrated by at least one eccentrically arranged conduit comprising a draining shaft in the upper portion thereof and a feed shaft in the lower portion below the penetrated plate; the apertures in said plates have a diameter of less than 5 mm; and a surface portion of each plate underneath each conduit is impermeable, said impermeable surface portion being one to two times the cross-section of said conduit. More specifically, each plate is supported by a plurality of generally wedge-shaped mountings fastened to the inside of the shell, and by a ring which is level with the said mountings and is fastened to the inside of the shell, the ring being interrupted at least in the regions of the said mountings. A capping sleeve is slipped over each draining shaft. The capping sleeve comprises an upper portion whose cross-section is similar to that of the draining shaft, and a lower portion of larger cross-section, which lower portion overlaps and is securely connected to the upper portion.

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