56.
    发明专利
    未知

    公开(公告)号:DE50109176D1

    公开(公告)日:2006-05-04

    申请号:DE50109176

    申请日:2001-09-19

    Applicant: BASF AG

    Abstract: Hydrophilic open-celled resilient foams comprising melamine-formaldehyde resins, obtainable by(a) heating and crosslinking an aqueous solution or dispersion each containing at least a melamine-formaldehyde precondensate, an emulsifier, a blowing agent and a curing agent to form a foam,(b) then conditioning the foam at from 120 to 300° C. for from 1 to 180 minutes to remove volatiles, and(c) treating the foam during the conditioning or thereafter with at least one polymer containing primary and/or secondary amino groups and having a molar mass of not less than 300,are useful in hygiene articles to acquire, distribute andimmobilize body fluids.

    57.
    发明专利
    未知

    公开(公告)号:BRPI0408243A

    公开(公告)日:2006-03-01

    申请号:BRPI0408243

    申请日:2004-03-19

    Applicant: BASF AG

    Abstract: A color-stable superabsorbent polymer having long-term color stability, and methods of manufacturing the polymer, are disclosed. The superabsorbent polymer is prepared using a sulfinic acid derivative, like 2-hydroxy-2-sulfinatoacetic acid, a salt thereof, or a mixture thereof, as the reducing agent in a polymerization initiator system for the preparation of a superabsorbent polymer from monomers. The resulting superabsorbent polymer resists color degradation during periods of extended storage, even at an elevated temperature and humidity.

    58.
    发明专利
    未知

    公开(公告)号:DE50205377D1

    公开(公告)日:2006-01-26

    申请号:DE50205377

    申请日:2002-09-26

    Applicant: BASF AG

    Abstract: The present invention relates to polymer mixtures comprising hydrogel forming polymers capable of absorbing aqueous fluids, having different pH values and each being preparable by polymerization of olefinically unsaturated carboxylic acids or derivatives thereof, their preparation, use and hygiene articles containing same. More particularly, the invention relates to 2-component polymer mixtures comprising polymers having a pH range from acidic to neutral.

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