41.
    发明专利
    未知

    公开(公告)号:FI810442L

    公开(公告)日:1981-08-27

    申请号:FI810442

    申请日:1981-02-13

    Inventor: STRACK HANS

    Abstract: There is produced a crystalline zeolite powder of Type A which can be employed as a phosphate substitute in washing agents by a precipitation reaction by a specific sequence in which there are simultaneously added to water in a container a waterglass solution and a sodium aluminate liquor and subsequently in succession a waterglass solution and then sodium aluminate liquor. The crystalline product has an average particle size of 6.7 to 8 mu as well as a narrow particle size distribution curve.

    49.
    发明专利
    未知

    公开(公告)号:FI72438B

    公开(公告)日:1987-02-27

    申请号:FI810442

    申请日:1981-02-13

    Inventor: STRACK HANS

    Abstract: There is produced a crystalline zeolite powder of Type A which can be employed as a phosphate substitute in washing agents by a precipitation reaction by a specific sequence in which there are simultaneously added to water in a container a waterglass solution and a sodium aluminate liquor and subsequently in succession a waterglass solution and then sodium aluminate liquor. The crystalline product has an average particle size of 6.7 to 8 mu as well as a narrow particle size distribution curve.

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