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    5.
    发明专利
    未知

    公开(公告)号：AT267184B

    公开(公告)日：1968-12-10

    申请号：AT1083666

    申请日：1966-11-23

    Applicant: GLANZSTOFF AG

    Inventor： SOMMER ERWIN DR ,  GERLACH KLAUS DR ,  BOEHME KLAUS DR ,  RIESS WERNER DR ,  DANGL FRIEDRICH DR

    IPC: C08J9/28 ,  C08K3/28

    Abstract: 1,126,060. Coated fleeces. GLANZSTOFF A.G. 19 Dec., 1966 [17 Dec., 1965], No. 56785/66. Heading B2E. [Also in Divisions C3 and D2] A fibre fleece comprising polyamide and regenerated cellulose fibres is impregnated with a polyurethane solution, introduced into a water bath and dried and the resulting substratum coated with a layer of a.polyurethane gel which has been prepared by adding ammonia nitrate to a polyurethane solution in a suitable solvent in order to precipitate the polyurethane in gel form, the liquid phase being removed by centrifuging or evaporation. The coated substratum is then introduced into a water bath and dried to provide the substratum with a microporous water vapour permeable coating.

    9.
    发明专利
    未知

    公开(公告)号：DE1719138A1

    公开(公告)日：1971-08-12

    申请号：DE1719138

    申请日：1968-01-23

    Applicant: GLANZSTOFF AG

    Inventor： RIESS WERNER DR ,  SCHAEFER HELMUT ,  BAYER BERND

    IPC: D06N3/00 ,  C08J5/12 ,  C09J5/00 ,  C09J5/02 ,  D06N3/08

    Abstract: 1,253,677. Bonding artificial leather. GLANZSTOFF A.G. 21 Nov., 1968 [23 Jan., 1968], No. 55223/68. Heading B5N. [Also in Division Dl] The adhesive properties of artificial leather which comprises a non-woven fibre structure which has been bonded and then impregnated with an elastomeric polymer are improved by applying thereto an aqueous electrolyte solution so that the artificial leather assumes a pH value of from 2 up to 7. The artificial leather may be treated with aqueous solutions of salts having a pH value of 2-7 when measured on a 10% by weight solution, or with a weak, non- volatile, organic acids in 1-10% by weight aqueous solutions. Aqueous solutions of salts of chromium, aluminium, zinc, iron, calcium or ammonium, e.g. zinc chloride, chromium chloride, iron chloride, calcium chloride or ammonium chloride, of sodium chloride and ammonium chloride or of citric acid, may be used. The artificial leather may be of a bonded non-woven fibre structure impregnated with a polyurethane or polyacrylate, and the treatment with the electrolyte solution may be effected on the finished artificial leather or in the final stage of the manufacturing process. The treated artificial leather may be bonded with natural leather or other treated artificial leather using aqueous dispersions of natural rubber, polychloroprene or a polyurethane.

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