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    TUBULAR CASING OF CELLULOSE HYDRATE WITH A FAT AND WATER REPELLENT INNER SURFACE AND PROCESS FOR THE FACTURE THEREOF
    11.
    发明专利
    TUBULAR CASING OF CELLULOSE HYDRATE WITH A FAT AND WATER REPELLENT INNER SURFACE AND PROCESS FOR THE FACTURE THEREOF 未知

    公开(公告)号：CA1020722A

    公开(公告)日：1977-11-15

    申请号：CA187181

    申请日：1973-12-03

    Applicant: HOECHST AG

    Inventor： HAMMER KLAUS-DIETER ,  KLENDAUER WOLFGANG ,  SCHUIERER ERICH

    IPC: A22C13/00 ,  C08G73/02 ,  C08L61/20

    Abstract: This invention relates to a tubular casing of cellulose hydrate having a coating on its inner side composed of a mixture of substances cross-linked by chemical reaction, which mixture is obtained when an aqueous liquid containing A. 1 to 10 per cent by weight, calculated on the total weight of the liquid, of a water-soluble aminoplast precondensate, B. 1 to 4 per cent by weight, calculated on the total weight of the liquid of a fluorine-containing two-component system from beta 1. POLYMERS OF FLUORINE-CONTAINING ETHYLENE IMINES OF THE GENERAL FORMULA WHEREIN Rf is a straight or branched, saturated perfluorinated carbon chain with 6 to 10 carbon atoms, and a = 1 or 2, or polymers from mixtures of the said ethylene imines, dispersed in beta 2. FLUORINE-CONTAINING COMPOUNDS OF THE GENERAL FORMULA WHEREIN R'f is a straight or branched, saturated perfluorinated carbon chain with 5 to 7 carbon atoms, b = 1 or 2, and c = 18 to 50 (corresponding to polyethylene glycol groups with an average molecular weight of about 800 to 2,000), or in mixtures of the above compounds, provided that, in the component B of the liquid, the ratio beta 1 to beta 2 is in the range from 40 : 60 to 60 : 40 per cent by weight, calculated on the total weight of the liquid, and C. a water-soluble cross-linking catalyst, is heated sufficiently to remove the portion of the liquid consisting of water and sufficiently to effect cross-linking, whereby the aminoplast precondensate and/or reaction products of the aminoplast precondensate and the constituents beta 1 and beta 2 of the component B are chemically bonded with the OH groups of the cellulose hydrate forming the tubular casing.

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