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    VERFAHREN ZUR ERHÖHUNG DES MOLEKULARGEWICHTS VON POLYESTERN
    4.
    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

    Inventor： LOOS, Robert ,  SCHILLO, Simone

    IPC: C08G63/00

    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.

    VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON POLYESTERMISCHUNGEN
    5.
    发明公开
    VERFAHREN ZUR KONTINUIERLICHEN HERSTELLUNG VON POLYESTERMISCHUNGEN 有权
    PROCESS聚酯混合工连续生产

    公开(公告)号：EP2488585A1

    公开(公告)日：2012-08-22

    申请号：EP10770765.5

    申请日：2010-10-12

    Applicant: BASF SE

    Inventor： LOOS, Robert ,  WITT, Uwe ,  YAMAMOTO, Motonori ,  MAIR, Gunther ,  GARBE, Andreas

    IPC: C08L67/02 ,  C08L67/04

    CPC classification number: C08L67/02 ,  C08G63/16 ,  C08G63/78 ,  C08L1/12 ,  C08L67/04 ,  C08L69/00 ,  C08L2666/18 ,  C08L2666/26

    Abstract: The present invention relates to a method for continuously producing polyester mixtures containing: a) 10 to 80% by weight of a biodegradable polyester (Q) made of aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds, and b) 20 to 90% by weight of one or more polymers (T) selected from the group consisting of: polylactic acid, polycaprolactone, polypropylene carbonate, polyglycolide, aliphatic polyester, cellulose acetate, and polyhydroxyalkanoate, wherein i) a mixture of the aliphatic dihydroxy compounds, the aliphatic and aromatic dicarboxylic acids, and optionally additional comonomers (component C), without the addition of a catalyst, is blended into a paste, or, as an alternative, the liquid esters of the dicarboxylic acids and the dihydroxy compound, and optionally additional comonomers, without the addition of a catalyst, are introduced, in a first stage said mixture is continuously esterified or transesterified together with the total quantity or a portion of the catalyst; ii) in a second stage the transesterification or esterification product yielded according to i) is continuously precondensed to a viscosity number according to DIN 53728 of 20 to 70 cm
    3 /g; iii) in a third stage the product that can be yielded from ii) is continuously polycondensed to a viscosity number according to DIN 53728 of 60 to 170 cm
    3 /g, and iv) in a fourth stage the product that can be yielded from iii) (polyester Q) is continuously blended with the polymer T, and v) optionally in a fifth stage the polymer mixture than can be yielded from iv) is continuously reacted with a chain extender D in a polyaddition reaction to a viscosity number according to DIN 53728 of 150 to 320 cm
    3 /g.

    BIOLOGISCH ABBAUBARE COPOLYESTER
    7.
    发明公开
    BIOLOGISCH ABBAUBARE COPOLYESTER 审中-公开

    公开(公告)号：EP3227352A1

    公开(公告)日：2017-10-11

    申请号：EP15801468.8

    申请日：2015-11-30

    Applicant: BASF SE

    Inventor： MOLAWI, Kian ,  LOOS, Robert ,  KUENKEL, Andreas

    IPC: C08G18/42 ,  C08G63/08 ,  C08G63/60

    CPC classification number: C08G18/428 ,  C08G18/4286 ,  C08G18/73 ,  C08G63/08 ,  C08G63/18 ,  C08G63/181 ,  C08G63/60 ,  C08G63/78 ,  C08G63/80 ,  C08G63/91 ,  C08G63/916

    Abstract: The invention relates to a biodegradable copolyester that has a molecular weight Mn measured in accordance with GPC of 10,000 to 100,000 and that can be obtained by reacting vi) 51 to 84 wt%, with respect to the copolyester, of a branched polyester middle block based on aliphatic or aliphatic and aromatic dicarboxylic acids and aliphatic dihydroxy compounds and having a molecular weight Mn measured in accordance with
    1 H-NMR of 5,000 to 25,000 with vii) 15.9 to 48.9 wt%, with respect to the copolyester, of a lactide in the presence of a catalyst and then reacting the polyester triblock thus obtained and having a molecular weight Mn measured in accordance with
    1 H-NMR of 5,800 to 49,500 with viii) 0.1 to 3 wt%, with respect to the copolyester, of a diisocyanate. The invention further relates to a method for producing the biodegradable copolyesters mentioned above and to the use of the biodegradable copolyesters mentioned above.

    Abstract translation: 本发明涉及一种可生物降解的共聚聚酯，其具有根据GPC测量的分子量Mn为10,000至100,000，并且可以通过以下方式获得：vi）相对于共聚聚酯，51​​至84wt％的基于支化聚酯中间嵌段 在脂族或脂族和芳族二羧酸和脂族二羟基化合物上，并且具有根据1 H-NMR测量的分子量Mn为5,000至25,000，vii）相对于共聚多酯，15.9至48.9wt％的丙交酯在存在 然后使得到的聚酯三嵌段与根据1 H-NMR测定的分子量Mn为5800至49500的聚酯三嵌段反应，其中viii）相对于共聚酯为0.1至3wt％的二异氰酸酯。 本发明还涉及用于生产上述生物可降解共聚酯的方法以及上述生物可降解共聚酯的用途。

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