Recyclable cross-linked polymer, method for producing a molded article,
and method for recycling the same
    3.
    发明授权
    Recyclable cross-linked polymer, method for producing a molded article, and method for recycling the same 失效
    可回收交联聚合物,制造成型品的方法及其再循环方法

    公开(公告)号:US5654368A

    公开(公告)日:1997-08-05

    申请号:US609347

    申请日:1996-03-01

    摘要: The invention is to provide elastomer-like or rubber-like, recyclable cross-linked polymers capable of being liquefied and re-molded repeatedly without detracting from the physical properties of the polymers. The polymer comprises meltable cross-linked oligomer units and linkage units via which the oligomer units are linked to construct the main chains of the polymer. Each linkage unit in the polymer comprises a chemical bond that can be cleaved and re-formed repeatedly by predetermined treatment by which the bond between monomers in the oligomer units are not cleaved. The method for producing the polymer comprises a step of forming oligomer units by polymerizing monomers, a step of forming linkage units by linking the oligomer units via linkage units and a step of forming cross-linked units between the oligomer units.

    摘要翻译: 本发明提供弹性体状或橡胶状的可再循环交联聚合物,其能够在不降低聚合物的物理性能的情况下重复液化和重新模塑。 聚合物包括可熔交联的低聚物单元和连接单元,低聚物单元通过其连接以构建聚合物的主链。 聚合物中的每个连接单元包含可以通过预定处理而被切割并重新形成的化学键,通过该处理,低聚物单元中的单体之间的键不被切割。 制造聚合物的方法包括通过聚合单体形成低聚物单元的步骤,通过连接单元连接低聚物单元形成连接单元的步骤和在低聚物单元之间形成交联单元的步骤。

    Process for producing poly (cyclic conjugated diene)
    8.
    发明授权
    Process for producing poly (cyclic conjugated diene) 失效
    聚(环状共轭二烯)的制造方法

    公开(公告)号:US06426396B2

    公开(公告)日:2002-07-30

    申请号:US09306054

    申请日:1999-05-06

    IPC分类号: C08F480

    摘要: Poly(cyclic conjugated diene) polymers are prepared by polymerizing a cyclic conjugated diene monomer or cyclic conjugated diene monomer and a double bond-containing monomer using a transition metal catalyst, preferably a Ni-based catalyst, in a non-polar solvent containing a basic compound or an aromatic halide solvent. The poly(cyclic conjugated diene) polymer may then be subsequently modified by reaction of at least one of the double bonds of the polymer with a modifying substance, for example hydrogen.

    摘要翻译: 聚(环状共轭二烯)聚合物通过使用过渡金属催化剂,优选Ni基催化剂在含有碱性的非极性溶剂中使环状共轭二烯单体或环状共轭二烯单体和含双键单体聚合来制备 化合物或芳族卤化物溶剂。 然后可以通过聚合物的至少一个双键与修饰物质例如氢的反应来修饰聚(环状共轭二烯)聚合物。

    Polylactic acid composition
    10.
    发明授权
    Polylactic acid composition 失效
    聚乳酸组成

    公开(公告)号:US07585910B2

    公开(公告)日:2009-09-08

    申请号:US11387964

    申请日:2006-03-24

    IPC分类号: B60C1/00

    CPC分类号: C08K5/10 C08L67/04

    摘要: A polylactic acid composition containing polylactic acid and ester-based plasticizer, wherein a content of the ester-based plasticizer is 16 to 33 wt %, and when the composition is highly deformed by stress loading as the relation between the stress and the deformation deviates from linear viscoelastic behavior and thereafter the stress is released, residual deformation measured after the stress is released is not less than 66.0% after 0.2 minute of the stress release, and is not more than 34.0% after 240 hours of the stress release.

    摘要翻译: 含有聚乳酸和酯系增塑剂的聚乳酸组合物,其中酯类增塑剂的含量为16〜33重量%,当应力负荷与组合物的应力与变形之间的关系偏离时,组合物高度变形 线性粘弹性行为,然后释放应力,应力释放后测得的残余变形在应力释放0.2分钟后不低于66.0%,应力释放240小时后不大于34.0%。