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21 records (took 0.021 seconds)

    1.
    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.

    8.
    发明专利
    未知

    公开(公告)号：AT279330B

    公开(公告)日：1970-03-10

    申请号：AT1040166

    申请日：1966-11-10

    Applicant: GLANZSTOFF AG

    Inventor： SOMMER ERWIN DR ,  BOEHME KLAUS DR ,  GERLACH KLAUS DR

    IPC: D04H1/50 ,  D04H1/00 ,  D04H1/42 ,  D04H1/54 ,  D06N3/00 ,  D06N7/00 ,  D21B1/00

    Abstract: 1,171,607. Papermaking; paper. GLANZSTOFF A.G. 1 Nov., 1966 [14 Dec., 1965], No. 48980/66. Headings D2A and D2B. Fleeces, suitable as bases for artificial leather, are made from mixtures of fibres of three different kinds: (I) synthetic fibres that shrink when treated with water at 90 to 100‹C, (II) non-shrinkable or substantially non- shrinkable natural or synthetic fibres, and (III) synthetic fibres that soften or melt at 90 to 100‹C in the presence of water. The fibres are dispersed in water and formed into a fleece on a paper-making machine, water is removed to a residual content of 50 to 70% without the use of heat, the wet fleece is exposed briefly but without pressure or tension to highfrequency or infra-red radiation and thereafter dried, again without the use of pressure or tension. Fibres used are of: (I) a copolyamide formed from 20% of adipic acid-hexamethylenediamine salt and 80% of caprolactan, a copolyamide formed from adipic acid-hexamethylenediamine salt and alkylene-bis(aminopropyl ether adipate), or highly stretched polyethylene terephthalate; (II) polycaprolactam, regenerated cellulose or natural fibres; and (III) copolyamide formed from 40% of adipic acid -hexamethylenediamine salt and 60% of caprolactam. The high-frequency or infra-red radiation can be supplied by radiators placed immediately behind the wet section of a papermaking machine.

    10.
    发明专利
    未知

    公开(公告)号：AT252722B

    公开(公告)日：1967-03-10

    申请号：AT292564

    申请日：1964-04-03

    Applicant: GLANZSTOFF AG

    Inventor： SOMMER ERWIN DR ,  GERLACH KLAUS DR

    IPC: D21H20060101

    Abstract: Paper containing fibres of polyamide and of cellulose is made by treating the polyamide fibres with an acidified aqueous solution of the sodium salt of a copolymer of styrene and maleic acid, forming an aqueous dispersion of fibres of the two kinds, and processing this dispersion on a paper-making machine. The solution may be prepared by treating the polymer with sodium hydroxide, dissolving the soluble products in water, and then acidifying, but not so strongly that the copolymer is precipitated. A preferred range of pH is 1.8 to 2.5. The polyamide fibres may be treated by drawing a stretched tow through the solution, or they may be treated after cutting. Alternatively the tow may first be drawn through a dilute acid, and then squeezed and drawn through a solution of the polymer which has not been acidified and is kept at constant pH by the continuous addition of alkali. The treated fibres can be stored dry or moist.

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