METHOD OF DRAINING WATER
    7.
    发明公开

    公开(公告)号:US20240316533A1

    公开(公告)日:2024-09-26

    申请号:US18259352

    申请日:2021-10-01

    申请人: ROCKWOOL A/S

    IPC分类号: B01J20/28 B01J20/24 B01J20/30

    摘要: The present invention relates to a method of draining water comprising the steps of:



    providing a water drainage device, wherein the water drainage device comprises man-made vitreous fibres (MMVF) bonded with a cured aqueous binder composition free of phenol and formaldehyde;
    positioning the water drainage device in contact with the ground, wherein the water drainage device absorbs water and releases water to a recipient




    wherein the aqueous binder composition prior to curing comprises;



    a component (i) in form of one or more lignosulfonate lignins having a carboxylic acid group content of 0.03 to 1.4 mmol/g, based on the dry weight of the lignosulfonate lignins,
    a component (ii) in form of one or more cross-linkers.