11.
    发明专利
    未知

    公开(公告)号:DK341375A

    公开(公告)日:1976-01-30

    申请号:DK341375

    申请日:1975-07-28

    Applicant: BASF AG

    Abstract: Method of removing odorous formaldehyde from stabilized shaped polyoxymethylenes in which an inert gas is caused to flow over stabilized and shaped solid polyoxymethylenes at elevated temperatures not high enough to cause sticking or fusion of the polyoxymethylene, until substantially all of the volatile formaldehyde has been removed.

    13.
    发明专利
    未知

    公开(公告)号:SE7803670L

    公开(公告)日:1978-10-03

    申请号:SE7803670

    申请日:1978-03-31

    Applicant: BASF AG

    Abstract: A process for sizing staple fiber yarns by applying an aqueous sizing liquor which contains an alkaline earth metal salt of a copolymer containing from 90 to 30% by weight of acrylic acid and/or methacrylic acid and from 10 to 70% by weight of acrylonitrile and/or methacrylonitrile, which copolymer has a viscosity of from 50 to 1,000 cp in 15% strength aqueous solution at 85 DEG C., and drying the treated yarns. The sized films obtained are moisture-insensitive and have good heat stability.

    15.
    发明专利
    未知

    公开(公告)号:SE7610871L

    公开(公告)日:1977-04-02

    申请号:SE7610871

    申请日:1976-09-30

    Applicant: BASF AG

    Abstract: Fabrics of which the warp is sized with water-soluble polymers of acrylic acid and/or their alkali metal salts or ammonium salts, are desized by treating the sized fabric with from 30 to 300 percent by weight of water, based on the dry weight of the fabric, and separating the resulting size solution from the fabric. The recovered size solution can be directly re-used for sizing.

    17.
    发明专利
    未知

    公开(公告)号:SE7508452L

    公开(公告)日:1976-01-30

    申请号:SE7508452

    申请日:1975-07-24

    Applicant: BASF AG

    Abstract: Method of removing odorous formaldehyde from stabilized shaped polyoxymethylenes in which an inert gas is caused to flow over stabilized and shaped solid polyoxymethylenes at elevated temperatures not high enough to cause sticking or fusion of the polyoxymethylene, until substantially all of the volatile formaldehyde has been removed.

Patent Agency Ranking