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    54.
    发明专利
    未知

    公开(公告)号：BR9503924A

    公开(公告)日：1996-09-17

    申请号：BR9503924

    申请日：1995-09-04

    Applicant: HOECHST AG

    Inventor： FLEISCHER DIETRICH ,  HOFFMOCKEL MICHAEL ,  MUECK KARL-FRIEDRICH ,  SEXTRO GUENTER

    IPC: C08G2/10 ,  C08G2/00 ,  C08G2/18 ,  C08G2/24 ,  C08G2/28 ,  C08G2/36

    Abstract: Prodn. of acetal copolymers with simultaneous end gp. stabilisation is effected in homogeneous phase by copolymerising cyclic formaldehyde oligomers with cyclic acetal cpds. in a polymerisation reactor with addn. of a basic substance to deactivate the initiator following the copolymerisation, the process being such that the prod. (with its non-stable chain end content in presence of residual monomers reduced to 0.01-1%) is passed to a granulator where the bulk of the residual monomer is lost and the remaining residual monomers and dissolved impurities are removed by solvent extn. prior to drying and stabilising the prod. and then granulating it.

    56.
    发明专利
    未知

    公开(公告)号：BR9407360A

    公开(公告)日：1996-04-23

    申请号：BR9407360

    申请日：1994-08-11

    Applicant: HOECHST AG

    Inventor： SCHLEICHER ANDREAS ,  FLEISCHER DIETRICH ,  KULPE JUERGEN ,  FRANK GEORG

    IPC: B01D53/34 ,  B01D53/56 ,  B01D53/81 ,  B01J20/26

    Abstract: PCT No. PCT/EP94/02688 Sec. 371 Date Jul. 15, 1996 Sec. 102(e) Date Jul. 15, 1996 PCT Filed Aug. 11, 1994 PCT Pub. No. WO95/05894 PCT Pub. Date Mar. 2, 1995A method for removing oxides of nitrogen from gases and liquids by contacting a NOx containing gas or liquid with a polyarylene thioether filter material and a solid oxidizing agent having an electron potential greater than 0.96 V, wherein the solid oxidizing agent oxidizes NO into NO2 which is removed by the polyarylene thioether filter material.

    57.
    发明专利
    未知

    公开(公告)号：NO960606D0

    公开(公告)日：1996-02-15

    申请号：NO960606

    申请日：1996-02-15

    Applicant: HOECHST AG

    Inventor： SCHLEICHER ANDREAS ,  FLEISCHER DIETRICH ,  KULPE JURGEN ,  FRANK GEORG

    IPC: B01D53/34 ,  B01D53/56 ,  B01D53/81 ,  B01J20/26

    Abstract: PCT No. PCT/EP94/02688 Sec. 371 Date Jul. 15, 1996 Sec. 102(e) Date Jul. 15, 1996 PCT Filed Aug. 11, 1994 PCT Pub. No. WO95/05894 PCT Pub. Date Mar. 2, 1995A method for removing oxides of nitrogen from gases and liquids by contacting a NOx containing gas or liquid with a polyarylene thioether filter material and a solid oxidizing agent having an electron potential greater than 0.96 V, wherein the solid oxidizing agent oxidizes NO into NO2 which is removed by the polyarylene thioether filter material.

    58.
    发明专利
    未知

    公开(公告)号：BR9406386A

    公开(公告)日：1996-01-16

    申请号：BR9406386

    申请日：1994-04-13

    Applicant: HOECHST AG

    Inventor： STRUTZ HEINZ ,  FLEISCHER DIETRICH ,  KULPE JUERGEN ,  SCHLEICHER ANDREAS

    IPC: B01D15/00 ,  B01D19/00 ,  B01D53/14 ,  B01D53/34 ,  B01D53/66 ,  B01D53/86 ,  B01J20/26 ,  C08G75/02

    Abstract: A filter material based on a polyarylene thioether having repeating units of the formula -[(Ar1)n-X)]m-[(Ar2)i-Y)]j-[(Ar3)k-Z)]l-[(Ar4)o-W)]p-(I) in which Ar1, Ar2, Ar3, Ar4, W, X, Y and Z, independently of each other, are identical or different, the indices n, m, i, j, k, l, o and p, independently of each other, are zero or integers 1, 2, 3 or 4, their sum being at least 2, Ar1, Ar2, Ar3 and Ar4 are arylene systems having 6 to 18 carbon atoms, and W, X, Y and Z are divalent linking groups, selected from -SO2-, -S-, -SO-, -CO-, -O-, -CO2-, or alkylene groups or alkylidene groups having 1 to 6 carbon atoms is suitable for removing ozone from gases or liquids. The removal proceeds quantitatively, no volatile products being formed.

    59.
    发明专利
    未知

    公开(公告)号：NO954306D0

    公开(公告)日：1995-10-27

    申请号：NO954306

    申请日：1995-10-27

    Applicant: HOECHST AG

    Inventor： STRUTZ HEINZ ,  FLEISCHER DIETRICH ,  KUPLE JURGEN ,  SCHLEICHER ANDREAS

    IPC: B01D15/00 ,  B01D19/00 ,  B01D53/14 ,  B01D53/34 ,  B01D53/66 ,  B01D53/86 ,  B01J20/26 ,  C08G75/02 ,  B01D

    Abstract: A filter material based on a polyarylene thioether having repeating units of the formula -[(Ar1)n-X)]m-[(Ar2)i-Y)]j-[(Ar3)k-Z)]l-[(Ar4)o-W)]p-(I) in which Ar1, Ar2, Ar3, Ar4, W, X, Y and Z, independently of each other, are identical or different, the indices n, m, i, j, k, l, o and p, independently of each other, are zero or integers 1, 2, 3 or 4, their sum being at least 2, Ar1, Ar2, Ar3 and Ar4 are arylene systems having 6 to 18 carbon atoms, and W, X, Y and Z are divalent linking groups, selected from -SO2-, -S-, -SO-, -CO-, -O-, -CO2-, or alkylene groups or alkylidene groups having 1 to 6 carbon atoms is suitable for removing ozone from gases or liquids. The removal proceeds quantitatively, no volatile products being formed.

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