BLENDS OF STYRENE-BUTADIENE COPOLYMERS
    1.
    发明申请

    公开(公告)号:US20170240740A1

    公开(公告)日:2017-08-24

    申请号:US15508355

    申请日:2015-09-02

    Abstract: Polymer blend comprising 95 to 100% of a component A) and 0 to 5% of additives, where A) is consisting of polymers A1 ) to A4): A1 ) 50 to 75% of a star shaped block copolymer A1 which comprises at least 2 terminal vinylaromatic hard blocks S and diene soft blocks B, where the proportion of the hard blocks S is from 65 to 90%, and Mn of block S is 35000 to 200000; A2) 5 to 15% of block copolymer A2 which comprises 2 terminal vinylaromatic hard blocks S1 and S2 and random copolymer blocks (B/S) consisting of 20 to 60% vinylaromatic monomers, and 80 to 40% dienes where the proportion of blocks S1 and S2 is 40 to 60%; and Mn of blocks S1 is 35000 to 200000, and Mn of blocks S2 is 5000 to 30000 and the molar S1/S2 ratio is 1:0.5 to 1:10; A3) 3 to 10% of an block copolymer A3 built up from vinylaromatic hard blocks S and from random soft blocks B/S consisting of 60 to 30% vinylaromatic monomers and 40 to 70% dienes, where the diene content is less than 50% and the proportion of the soft phase is at least 60%; and A4) 10 to 35% polystyrene A4; whereby the ratio of A1 ) to A2) to A3) is from 7 : [1.2 to 1.9] : [0.5 to 12], have particular mechanical properties.

    BLENDS OF STYRENE BUTADIENE COPOLYMERS WITH POLY(LACTIC ACID)
    3.
    发明申请
    BLENDS OF STYRENE BUTADIENE COPOLYMERS WITH POLY(LACTIC ACID) 有权
    苯乙烯丁二烯共聚物与聚(酸)的共混

    公开(公告)号:US20160297961A1

    公开(公告)日:2016-10-13

    申请号:US15035692

    申请日:2014-11-11

    CPC classification number: C08L67/04 C08F297/046 C08L53/02

    Abstract: The present invention relates to a polymer blend comprising 75-99.5% (w/w) of at least one polylactic acid) (PLA) and 0.5-25% (w/w) of at least one styrene butadiene copolymer containing at least 50% (w/w) styrene. The present invention further relates to the use of such polymer blend for producing products and to the resulting products. Moreover, an object of the present invention is the use of a styrene butadiene block copolymer having a dendrimer structure comprising 50-85% (w/w) styrene as an additive of polymer blends comprising at least 50% (w/w) of PLA and a method of producing the polymer blend according to the invention.

    Abstract translation: 本发明涉及包含75-99.5%(w / w)的至少一种聚乳酸(PLA)和0.5-25%(w / w)的至少一种含至少50% (w / w)苯乙烯。 本发明还涉及这种聚合物共混物用于生产产品和所得产品的用途。 此外,本发明的目的是使用具有包含50-85%(w / w)苯乙烯的树枝状聚合物结构的苯乙烯丁二烯嵌段共聚物作为聚合物共混物的添加剂,其包含至少50%(w / w)的PLA 以及制备本发明的聚合物共混物的方法。

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