THERMOPLASTIC COMPOSITION FORMED FROM POLYLACTIC ACID AND ELASTOMERIC GRAFT COPOLYMER
    1.
    发明申请
    THERMOPLASTIC COMPOSITION FORMED FROM POLYLACTIC ACID AND ELASTOMERIC GRAFT COPOLYMER 审中-公开
    由聚酸和丙烯酸共聚物形成的热塑性组合物

    公开(公告)号:US20130030128A1

    公开(公告)日:2013-01-31

    申请号:US13640916

    申请日:2011-04-14

    IPC分类号: C08F8/00 C08F120/10

    摘要: The brittleness of a thermoplastic material containing a polylactic acid may be reduced by melting and mixing the thermoplastic material and a graft copolymer to link the graft copolymer to thermoplastic polymer to form a new thermoplastic material with reduced brittleness. The graft copolymer comprises an elastomeric backbone and a side chain grafted to the backbone. The side chain comprises a enantiomer of lactic acid opposite to the enantiomer in the thermoplastic material. A composition comprises a thermoplastic polymer and the graft copolymer, where the graft copolymer is linked to the thermoplastic polymer by the enantiomers. A method of forming the composition may comprise melting precursors for the thermoplastic polymer and the graft copolymer, and mixing the precursors to allow the lactic acids to link the graft copolymer to the thermoplastic polymer.

    摘要翻译: 包含聚乳酸的热塑性材料的脆性可以通过熔融和混合热塑性材料和接枝共聚物来降低,以将接枝共聚物与热塑性聚合物连接,形成具有降低的脆性的新的热塑性材料。 接枝共聚物包括弹性体骨架和接枝到主链上的侧链。 侧链包含与热塑性材料中的对映异构体相反的乳酸对映异构体。 组合物包含热塑性聚合物和接枝共聚物,其中接枝共聚物通过对映异构体与热塑性聚合物连接。 形成组合物的方法可以包括熔融热塑性聚合物和接枝共聚物的前体,并混合前体以允许乳酸将接枝共聚物连接到热塑性聚合物上。

    ELASTOMERS CROSSLINKED BY POLYLACTIC ACID
    2.
    发明申请
    ELASTOMERS CROSSLINKED BY POLYLACTIC ACID 审中-公开
    由聚酰胺交联的弹性体

    公开(公告)号:US20130030122A1

    公开(公告)日:2013-01-31

    申请号:US13640936

    申请日:2011-04-14

    IPC分类号: C08G63/91

    摘要: A composition is provided, which comprises chains comprising a first graft copolymer of a first elastomer and a poly(L-lactic acid), and chains comprising a second graft copolymer of a second elastomer and a poly(D-lactic acid). At least some of the poly(L-lactic acid) and poly(D-lactic acid) crosslink the chains. Poly(L-lactic acid) and poly(D-lactic acid) may form stereocomplexes that crosslink the chains. The chains may be crosslinked by crystalline structures formed from at least some of the poly(L-lactic acid) and poly(D-lactic acid) in discrete regions. The crosslinked chains may form a matrix. In a method of forming the composition, the first and second graft copolymers are mixed, such as by melt blending or solution casting, to form the composition. The graft copolymers may be formed by a “grafting-though” or “grafting-from” process. The composition may be useful under a relatively wide range of temperatures.

    摘要翻译: 提供了一种组合物,其包含包含第一弹性体和聚(L-乳酸)的第一接枝共聚物的链和包含第二弹性体和聚(D-乳酸)的第二接枝共聚物的链。 至少一些聚(L-乳酸)和聚(D-乳酸)交联链。 聚(L-乳酸)和聚(D-乳酸)可以形成交联链的立体络合物。 链可以在离散区域中由至少一些聚(L-乳酸)和聚(D-乳酸)形成的结晶结构交联。 交联链可以形成基质。 在形成组合物的方法中,将第一和第二接枝共聚物例如通过熔融共混或溶液浇铸混合以形成组合物。 接枝共聚物可以通过接枝或接枝方法形成。 该组合物在相对较宽的温度范围内可能是有用的。