61.
    发明专利
    未知

    公开(公告)号:BR7801475A

    公开(公告)日:1978-10-31

    申请号:BR7801475

    申请日:1978-03-10

    Applicant: HOECHST AG

    Abstract: This invention relates to a bonded fiber web capable of absorbing water vapor and composed of synthetic, natural or regenerated fibers with a uniformly incorporated additive of at least one polymer, said additive comprising fibrous particles of at least one swellable carbohydrate derivative or a swellable modified carbohydrate derivative. The invention also relates to a process for the manufacture of the bonded fiber web.

    HYDROPHILIC STRUCTURES OF WATER INSOLUABLE POLYMERS

    公开(公告)号:ZA748176B

    公开(公告)日:1976-01-28

    申请号:ZA748176

    申请日:1974-12-23

    Applicant: HOECHST AG

    Abstract: 1492040 Articles comprising cellulosic particles HOECHST AG 20 Dec 1974 [24 Dec 1973] 55196/74 Heading C3F [Also in Division B5] Cellulose ethers, inherently water-soluble but rendered at least partly water-insoluble, but still water-absorbent by cross-linking or other chemical modification, are uniformly distributed in, or over a surface of, a shaped article composed of a film- or fibre-forming polymer which is insoluble in water. The cellulose ether may be carboxymethyl-, hydroxyethyl-, or methylhydroxyethyl-cellulose and is preferably in the form of particles of a size within the range of from 0À01 to 2 mm. Several modifying agents are used, epichlorohydrin most commonly. The shaped articles in the examples are films of hydrated cellulose (from viscose), cellulose acetate and hydroxyethyl cellulose and fibres of polyethylene.

Patent Agency Ranking