ADDITIVE ZUR HYDROLYSESTABILISIERUNG VON POLYKONDENSATEN
    7.
    发明公开
    ADDITIVE ZUR HYDROLYSESTABILISIERUNG VON POLYKONDENSATEN 审中-公开
    添加剂缩聚物的水解稳定

    公开(公告)号:EP2780407A1

    公开(公告)日:2014-09-24

    申请号:EP12783627.8

    申请日:2012-11-13

    Applicant: BASF SE

    CPC classification number: C08G63/916 C08K5/151 C08K5/29 C08K5/5435

    Abstract: The invention relates to a mixture containing at least one multi-functional chain extender with at least three reactive groups, as well as at least one monofunctional or difunctional hydrolytic stabiliser, said chain extender and hydrolytic stabilisers reacting with the end groups of polymers when the polymers are in a melted or solid state, with a chemical bond being formed. The invention also relates to the use of such mixtures as stabilisers for polymers, and to a method for the stabilisation of polymers against losses in molecular weight in which an effective amount of such a mixture is added to the polymer.

    VERFAHREN ZUR ERHÖHUNG DES MOLEKULARGEWICHTS VON POLYESTERN
    8.
    发明公开
    VERFAHREN ZUR ERHÖHUNG DES MOLEKULARGEWICHTS VON POLYESTERN 有权
    方法提高分子量聚酯

    公开(公告)号:EP2596044A2

    公开(公告)日:2013-05-29

    申请号:EP11732477.2

    申请日:2011-07-18

    Applicant: BASF SE

    CPC classification number: C08G63/916 C08G81/00

    Abstract: The invention relates to a method for increasing the molecular weight of polyesters by heating 100 parts of polyester with i) 0.01 to 5 parts of a tetracarbolic acid dianhydride, and ii) 0.01 to 5 parts of a copolymer comprising an epoxy group and based on styrene, acrylic acid ester, and/or methacrylic acid ester in an extruder to 160 to 350°C.

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