61.
    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

    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.

    62.
    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

    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.

    64.
    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

    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.

    METHOD OF REDUCING SULFOXIDE GROUPS IN POLYMERS

    公开(公告)号:PL305330A1

    公开(公告)日:1995-04-18

    申请号:PL30533094

    申请日:1994-10-06

    Applicant: HOECHST AG

    Abstract: The invention relates to a process for the preparation of polymer sulphides which is characterised in that compounds containing sulphoxide linking groups of the formula (I> -[(Ar )n-X)]m-[(Ar )i-Y)]j-[(Ar )k-Z)]l-[(Ar )o-W)]p- (1> in which the symbols and indices have the following meanings: Ar , Ar , Ar and Ar are identical or different arylene systems having 6 to 18 carbon atoms, W, X, Y and Z are identical or different -SO2-, -S-, -SO-, -CO-, -O-, -CO2-, alkylene or alkylide groups having 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms, where at least one linking group from W, X, Y or Z must be an -SO- group, n, m, i, j, k, l, o and p are identical or different and are 0 or an integer 1, 2, 3 or 4, where their sum must be at least 2, are treated a) thermally or b) in the presence of active hydrogen or c) photochemically and reduced to the corresponding sulphides.

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